| Pond Evaporation Calculation | 1/31/18 | |||||||||||||
| Weather Station Data provided by Northern Colorado Water Conservancy District | ||||||||||||||
| See Weather Station Location Map at: | ||||||||||||||
| http://www.northernwater.org/WaterConservation/WeatherandETData.aspx | ||||||||||||||
| Notes: | ||||||||||||||
| Current month reflects values through "Reference Date". | ||||||||||||||
| Pond Evap. calculated per recent Division 1 Water Court decree language: | Lower South Platte Home Page | |||||||||||||
| Gross Pond = .84(Alfalfa ETr) | Pond Evaporation Reports Main Menu | |||||||||||||
| Net Pond = .84(Alfalfa ETr) - .7(Total Precip) | ||||||||||||||
| Alfalfa reference ETr computed by Standard ASCE equation from daily weather data. | ||||||||||||||
| Winter pond evap. is a reference for unfrozen ponds. | ||||||||||||||
| For Growing Degree Days: | ||||||||||||||
| Tmax = 86° F, Tmin = 50° F and Tbase = 50° F | ||||||||||||||
| Totals | ||||||||||||||
| Weather Station | 2017 | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | or Avg. |
| Ovid | Avg. Temp ° F | 24.74 | 35.89 | 44.14 | 49.82 | 56.64 | 70.45 | 76.36 | 68.74 | 62.82 | 48.21 | 39.41 | 25.6 | 50.24 |
| Ref date as of 12/31/2017 | Total Precip " | 0.61 | 0.19 | 1.8 | 2.34 | 3.01 | 0.89 | 1.31 | 2.61 | 1.2 | 0.76 | 0.23 | 0.49 | 15.44 |
| Site Type: Alfalfa | Total Alfalfa ETr " | 1.73 | 3.39 | 5.4 | 5.98 | 7.07 | 10.32 | 10.08 | 7.13 | 5.55 | 4.63 | 2.8 | 2.22 | 66.3 |
| Total Growing Degee Days from March 1 | 0 | 0 | 195 | 211 | 313 | 559 | 721 | 573 | 422 | 246 | 149 | 43 | 3432 | |
| Gross Pond Evap | Total " | 1.45 | 2.85 | 4.54 | 5.02 | 5.94 | 8.67 | 8.47 | 5.99 | 4.66 | 3.89 | 2.35 | 1.86 | 55.69 |
| Net Pond Evap | Total " | 1.03 | 2.71 | 3.28 | 3.39 | 3.83 | 8.05 | 7.55 | 4.16 | 3.82 | 3.36 | 2.19 | 1.52 | 44.89 |
| Crook | Avg. Temp ° F | 25.49 | 36.18 | 44.7 | 49.53 | 56.05 | 69.04 | 75.44 | 69.01 | 62.26 | 48.74 | 40.37 | 26.55 | 50.28 |
| Ref date as of 12/31/2017 | Total Precip " | 0.56 | 0.18 | 1.16 | 2.47 | 3.44 | 2.54 | 1.55 | 1.64 | 1.26 | 0.96 | 0.27 | 0.29 | 16.32 |
| Site Type: Alfalfa | Total Alfalfa ETr " | 1.83 | 3.53 | 5.63 | 5.84 | 6.5 | 9.16 | 9.73 | 6.7 | 4.56 | 4.1 | 2.43 | 1.93 | 61.94 |
| Total Growing Degee Days from March 1 | 0 | 0 | 214 | 212 | 311 | 537 | 700 | 568 | 414 | 258 | 165 | 47 | 3426 | |
| Gross Pond Evap | Inch | 1.54 | 2.97 | 4.73 | 4.91 | 5.46 | 7.69 | 8.17 | 5.63 | 3.83 | 3.44 | 2.04 | 1.62 | 52.03 |
| Net Pond Evap | Inch | 1.15 | 2.84 | 3.92 | 3.18 | 3.05 | 5.92 | 7.09 | 4.48 | 2.95 | 2.77 | 1.85 | 1.42 | 40.62 |
| Sterling | Avg. Temp ° F | 25.02 | 35.83 | 45.52 | 50.02 | 56.33 | 69.78 | 75.74 | 69.55 | 63.43 | 48.85 | 40.92 | 27.15 | 50.68 |
| Ref date as of 12/31/2017 | Total Precip " | 0.48 | 0.39 | 1.55 | 2.09 | 4.09 | 1.48 | 2.56 | 1.88 | 0.96 | 0.82 | 0.28 | 0.16 | 16.74 |
| Site Type: Alfalfa | Total Alfalfa ETr " | 1.63 | 3.1 | 5.36 | 5.84 | 6.46 | 9.17 | 9.77 | 7.51 | 5.61 | 4.47 | 2.86 | 2.13 | 63.91 |
| Total Growing Degee Days from March 1 | 0 | 0 | 220 | 216 | 318 | 541 | 716 | 585 | 421 | 256 | 174 | 58 | 3505 | |
| Gross Pond Evap | Inch | 1.37 | 2.6 | 4.5 | 4.91 | 5.43 | 7.7 | 8.21 | 6.31 | 4.71 | 3.75 | 2.4 | 1.79 | 53.68 |
| Net Pond Evap | Inch | 1.03 | 2.33 | 3.42 | 3.44 | 2.56 | 6.67 | 6.41 | 4.99 | 4.04 | 3.18 | 2.21 | 1.68 | 41.96 |
| Brush | Avg. Temp ° F | 24.61 | 35.68 | 45.07 | 49.29 | 55.61 | 68.79 | 74.6 | 69.5 | 62.09 | 48.01 | 40.42 | 26.58 | 50.02 |
| Ref date as of 12/31/2017 | Total Precip " | 0.5 | 0.35 | 1.57 | 2.34 | 2.8 | 0.56 | 0.74 | 2.43 | 0.68 | 0.72 | 0.22 | 0.3 | 13.21 |
| Site Type: Alfalfa | Total Alfalfa ETr " | 1.69 | 3.24 | 5.51 | 6.02 | 6.56 | 9.1 | 9.3 | 7.62 | 5.41 | 4.74 | 2.85 | 2.31 | 64.35 |
| Total Growing Degee Days from March 1 | 0 | 0 | 228 | 229 | 327 | 537 | 691 | 587 | 422 | 278 | 190 | 66 | 3555 | |
| Gross Pond Evap | Inch | 1.42 | 2.72 | 4.63 | 5.06 | 5.51 | 7.64 | 7.81 | 6.4 | 4.54 | 3.98 | 2.39 | 1.94 | 54.04 |
| Net Pond Evap | Inch | 1.07 | 2.48 | 3.53 | 3.42 | 3.55 | 7.25 | 7.29 | 4.7 | 4.07 | 3.48 | 2.24 | 1.73 | 44.81 |
| Fort Morgan | Avg. Temp ° F | 25.66 | 36.58 | 45.8 | 50.03 | 56.67 | 68.68 | 74.04 | 68.56 | 61.66 | 46.72 | 39.58 | 25.91 | 49.99 |
| Ref date as of 12/31/2017 | Total Precip " | 0.29 | 0.27 | 1.16 | 3.07 | 4.31 | 0.47 | 0.98 | 1.39 | 0.74 | 0.65 | 0.15 | 0.14 | 13.62 |
| Site Type: Turf | Total Alfalfa ETr " | 1.56 | 2.8 | 4.78 | 5.66 | 6.52 | 8.44 | 8.7 | 7.14 | 5.41 | 3.87 | 2.27 | 1.75 | 58.9 |
| Total Growing Degee Days from March 1 | 0 | 0 | 227 | 236 | 331 | 527 | 689 | 575 | 408 | 244 | 158 | 47 | 3442 | |
| Gross Pond Evap | Inch | 1.31 | 2.35 | 4.02 | 4.75 | 5.48 | 7.09 | 7.31 | 6 | 4.54 | 3.25 | 1.91 | 1.47 | 49.48 |
| Net Pond Evap | Inch | 1.11 | 2.16 | 3.2 | 2.61 | 2.46 | 6.76 | 6.62 | 5.02 | 4.03 | 2.8 | 1.8 | 1.37 | 39.94 |
| Wiggins | Avg. Temp ° F | 25.24 | 35.73 | 44.9 | 48.7 | 55.51 | 68.85 | 73.83 | 68.56 | 61.24 | 46.94 | 39.5 | 26.38 | 49.62 |
| Ref date as of 12/31/2017 | Total Precip " | 0.32 | 0.19 | 1.11 | 1.79 | 3.13 | 1.51 | 1.23 | 1.2 | 0.83 | 0.63 | 0.19 | 0.14 | 12.27 |
| Site Type: Alfalfa | Total Alfalfa ETr " | 1.68 | 3.14 | 5.23 | 6.11 | 6.54 | 9.05 | 8.78 | 7.54 | 5.44 | 4.33 | 2.61 | 2.09 | 62.54 |
| Total Growing Degee Days from March 1 | 0 | 0 | 222 | 226 | 323 | 530 | 680 | 580 | 405 | 251 | 175 | 51 | 3443 | |
| Gross Pond Evap | Inch | 1.41 | 2.64 | 4.39 | 5.13 | 5.49 | 7.6 | 7.38 | 6.33 | 4.57 | 3.64 | 2.19 | 1.76 | 52.53 |
| Net Pond Evap | Inch | 1.19 | 2.5 | 3.62 | 3.88 | 3.3 | 6.55 | 6.51 | 5.49 | 3.99 | 3.2 | 2.06 | 1.66 | 43.95 |
| Fort Collins East | Avg. Temp ° F | 27.87 | 38.56 | 45.96 | 48.88 | 55.02 | 67.92 | 72.54 | 66.35 | 59.58 | 46.67 | 41.36 | 30.63 | 50.11 |
| Ref date as of 12/31/2017 | Total Precip " | 0.89 | 0.29 | 1.02 | 1.97 | 4.2 | 0.15 | 0.54 | 3.14 | 1.78 | 1.32 | 0.48 | 0.15 | 15.93 |
| Site Type: Alfalfa | Total Alfalfa ETr " | 2.09 | 3.84 | 5.71 | 6.28 | 6.71 | 8.94 | 8.28 | 6.17 | 4.94 | 3.89 | 2.86 | 2.35 | 62.06 |
| Total Growing Degee Days from March 1 | 0 | 0 | 200 | 206 | 311 | 501 | 648 | 524 | 379 | 231 | 142 | 64 | 3206 | |
| Gross Pond Evap | Inch | 1.76 | 3.23 | 4.8 | 5.28 | 5.64 | 7.51 | 6.96 | 5.18 | 4.15 | 3.27 | 2.4 | 1.97 | 52.15 |
| Net Pond Evap | Inch | 1.13 | 3.02 | 4.08 | 3.9 | 2.7 | 7.4 | 6.58 | 2.98 | 2.9 | 2.34 | 2.07 | 1.87 | 40.97 |
| Eaton | Avg. Temp ° F | 26.42 | 37.36 | 45.3 | 48.54 | 54.84 | 68.17 | 72.56 | 66.46 | 60.25 | 46.35 | 40.45 | 28.82 | 49.63 |
| Ref date as of 12/31/2017 | Total Precip " | 0.73 | 0.32 | 1.01 | 2.57 | 6.01 | 0.36 | 0.75 | 2.8 | 1.26 | 1.13 | 0.39 | 0.22 | 17.55 |
| Site Type: Alfalfa | Total Alfalfa ETr " | 1.83 | 3.55 | 5.35 | 6.3 | 6.8 | 9.02 | 8.01 | 5.99 | 5.13 | 4.07 | 2.64 | 2.16 | 60.85 |
| Total Growing Degee Days from March 1 | 0 | 0 | 210 | 219 | 314 | 505 | 639 | 534 | 395 | 239 | 145 | 63 | 3263 | |
| Gross Pond Evap | Inch | 1.54 | 2.98 | 4.49 | 5.29 | 5.71 | 7.58 | 6.73 | 5.03 | 4.31 | 3.42 | 2.22 | 1.81 | 51.11 |
| Net Pond Evap | Inch | 1.03 | 2.76 | 3.79 | 3.49 | 1.51 | 7.32 | 6.2 | 3.07 | 3.43 | 2.63 | 1.94 | 1.66 | 38.83 |
| Johnsons Corner | Avg. Temp ° F | 28.85 | 39.49 | 47.21 | 48.27 | 54.91 | 68.7 | 73.33 | 67.4 | 61.25 | 48.46 | 43.25 | 31.3 | 51.04 |
| Ref date as of 12/31/2017 | Total Precip " | 0.8 | 0.4 | 0.77 | 1.95 | 3.82 | 0.62 | 1.23 | 1.27 | 1.61 | 1.56 | 0.66 | 0.35 | 15.04 |
| Site Type: Alfalfa | Total Alfalfa ETr " | 2.05 | 3.67 | 5.41 | 5.94 | 6.26 | 8.74 | 8.19 | 6.45 | 5.23 | 4.06 | 3.14 | 2.22 | 61.36 |
| Total Growing Degee Days from March 1 | 0 | 0 | 201 | 196 | 293 | 526 | 679 | 554 | 390 | 233 | 138 | 62 | 3272 | |
| Gross Pond Evap | Inch | 1.72 | 3.08 | 4.54 | 4.99 | 5.26 | 7.34 | 6.88 | 5.42 | 4.39 | 3.41 | 2.64 | 1.86 | 51.53 |
| Net Pond Evap | Inch | 1.16 | 2.8 | 4.01 | 3.62 | 2.58 | 6.91 | 6.02 | 4.53 | 3.27 | 2.32 | 2.18 | 1.62 | 41.02 |
| Gilcrest | Avg. Temp ° F | 25.08 | 36.73 | 44.79 | 47.88 | 54.15 | 67.65 | 72.06 | 66.4 | 59.78 | 45.33 | 40.97 | 28.15 | 49.08 |
| Ref date as of 12/31/2017 | Total Precip " | 0.57 | 0.3 | 0.77 | 2.08 | 5.34 | 0.68 | 0.92 | 1.81 | 1.65 | 1.68 | 0.67 | 0.32 | 16.79 |
| Site Type: Alfalfa | Total Alfalfa ETr " | 1.71 | 3.38 | 5.19 | 6.02 | 6.02 | 8.13 | 7.6 | 6.26 | 4.89 | 3.59 | 2.67 | 1.98 | 57.44 |
| Total Growing Degee Days from March 1 | 0 | 0 | 206 | 206 | 294 | 503 | 639 | 534 | 382 | 219 | 153 | 65 | 3201 | |
| Gross Pond Evap | Inch | 1.44 | 2.84 | 4.36 | 5.06 | 5.06 | 6.83 | 6.38 | 5.26 | 4.11 | 3.02 | 2.24 | 1.66 | 48.26 |
| Net Pond Evap | Inch | 1.04 | 2.63 | 3.82 | 3.6 | 1.32 | 6.35 | 5.74 | 3.99 | 2.95 | 1.84 | 1.77 | 1.44 | 36.49 |
| Longmont South | Avg. Temp ° F | 29.53 | 40.74 | 47.94 | 48.73 | 54.41 | 67.98 | 72.62 | 67.32 | 61.12 | 47.84 | 43.14 | 30.35 | 50.98 |
| Ref date as of 12/31/2017 | Total Precip " | 1.01 | 0.34 | 0.98 | 1.69 | 4.89 | 0.16 | 0.3 | 1.46 | 1.7 | 1.95 | 0.58 | 0.4 | 15.46 |
| Site Type: Alfalfa | Total Alfalfa ETr " | 2.14 | 3.95 | 5.86 | 5.79 | 6.23 | 8.89 | 8.45 | 6.72 | 5.24 | 4.08 | 3.18 | 2.12 | 62.65 |
| Total Growing Degee Days from March 1 | 0 | 0 | 211 | 204 | 290 | 496 | 641 | 524 | 379 | 242 | 157 | 69 | 3213 | |
| Gross Pond Evap | Inch | 1.8 | 3.32 | 4.92 | 4.86 | 5.23 | 7.47 | 7.1 | 5.64 | 4.4 | 3.43 | 2.67 | 1.78 | 52.62 |
| Net Pond Evap | Inch | 1.09 | 3.08 | 4.24 | 3.68 | 1.81 | 7.36 | 6.89 | 4.62 | 3.21 | 2.06 | 2.27 | 1.5 | 41.81 |
| Fort Collins NW | Avg. Temp ° F | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | 0 |
| Ref date as of 12/31/2010 | Total Precip " | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | 0 |
| Site Type: Turf | Total Alfalfa ETr " | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | 0 |
| Total Growing Degee Days from March 1 | 0 | 0 | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | 0 | |
| Gross Pond Evap | Inch | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | 0 |
| Net Pond Evap | Inch | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | 0 |
| Fort Collins Central | Avg. Temp ° F | 28.7 | 38.76 | 46.48 | 49.39 | 55.21 | 68.2 | 73.06 | 66.98 | 60.38 | 46.71 | 41.66 | 31.34 | 50.57 |
| Ref date as of 12/31/2017 | Total Precip " | 0.59 | 0.41 | 0.92 | 1.9 | 3.97 | 0.18 | 1.23 | 2.04 | 2.15 | 1.73 | 0.69 | 0.12 | 15.93 |
| Site Type: Turf | Total Alfalfa ETr " | 1.77 | 2.94 | 4.5 | 5.43 | 6.06 | 7.6 | 7.34 | 5.6 | 4.49 | 3.42 | 2.35 | 1.87 | 53.37 |
| Total Growing Degee Days from March 1 | 0 | 0 | 202 | 213 | 315 | 505 | 648 | 532 | 386 | 235 | 153 | 72 | 3261 | |
| Gross Pond Evap | Inch | 1.49 | 2.47 | 3.78 | 4.56 | 5.09 | 6.38 | 6.17 | 4.7 | 3.77 | 2.87 | 1.97 | 1.57 | 44.82 |
| Net Pond Evap | Inch | 1.07 | 2.18 | 3.14 | 3.23 | 2.31 | 6.26 | 5.3 | 3.28 | 2.27 | 1.66 | 1.49 | 1.49 | 33.68 |
| Windsor | Avg. Temp ° F | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | 0 |
| Ref date as of 7/1/2012 | Total Precip " | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | 0 |
| Site Type: Dryland Pasture | Total Alfalfa ETr " | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | 0 |
| Total Growing Degee Days from March 1 | 0 | 0 | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | 0 | |
| Gross Pond Evap | Inch | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | 0 |
| Net Pond Evap | Inch | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | 0 |
| Greeley West | Avg. Temp ° F | 26.97 | 38.18 | 46.13 | 49.27 | 55.54 | 69.17 | 74.45 | 68.32 | 62.45 | 47.37 | 41.44 | 29.2 | 50.71 |
| Ref date as of 12/31/2017 | Total Precip " | 0.62 | 0.51 | 0.78 | 2.27 | 8.02 | 0.58 | 0.29 | 2.18 | 1.34 | 1.66 | 0.54 | 0.39 | 19.18 |
| Site Type: Turf | Total Alfalfa ETr " | 1.6 | 2.97 | 4.66 | 5.73 | 6.31 | 8.09 | 7.92 | 5.95 | 4.93 | 3.6 | 2.31 | 1.72 | 55.79 |
| Total Growing Degee Days from March 1 | 0 | 0 | 214 | 233 | 324 | 537 | 692 | 581 | 421 | 242 | 149 | 64 | 3457 | |
| Gross Pond Evap | Inch | 1.34 | 2.49 | 3.91 | 4.81 | 5.3 | 6.8 | 6.65 | 5 | 4.14 | 3.02 | 1.94 | 1.44 | 46.84 |
| Net Pond Evap | Inch | 0.91 | 2.14 | 3.37 | 3.22 | 0 | 6.39 | 6.45 | 3.47 | 3.2 | 1.86 | 1.56 | 1.17 | 33.74 |
| Loveland | Avg. Temp ° F | 29.19 | 40.54 | 47.65 | 49.22 | 56.05 | 69 | 73.88 | 68.03 | 61.81 | 47.62 | 42.25 | 31.31 | 51.38 |
| Ref date as of 12/31/2017 | Total Precip " | 0.66 | 0.58 | 1.07 | 2.02 | 3.35 | 0.41 | 0.71 | 2.06 | 1.82 | 1.29 | 1.67 | 0.13 | 15.77 |
| Site Type: Turf | Total Alfalfa ETr " | 1.73 | 3.23 | 4.68 | 5.26 | 6.02 | 7.57 | 7.23 | 5.75 | 4.61 | 3.35 | 2.32 | 1.79 | 53.54 |
| Total Growing Degee Days from March 1 | 0 | 0 | 238 | 249 | 336 | 545 | 690 | 578 | 423 | 256 | 156 | 79 | 3550 | |
| Gross Pond Evap | Inch | 1.45 | 2.71 | 3.93 | 4.42 | 5.06 | 6.36 | 6.07 | 4.83 | 3.87 | 2.81 | 1.95 | 1.5 | 44.96 |
| Net Pond Evap | Inch | 0.99 | 2.31 | 3.18 | 3 | 2.71 | 6.07 | 5.58 | 3.39 | 2.6 | 1.91 | 0.78 | 1.41 | 33.93 |
| Berthoud | Avg. Temp ° F | 29.06 | 39.51 | 47.33 | 49.03 | 55.6 | 69.24 | 74.05 | 68.29 | 62.17 | 48.35 | 43.42 | 31.2 | 51.44 |
| Ref date as of 12/31/2017 | Total Precip " | 0.89 | 0.36 | 0.65 | 1.67 | 4.07 | 0.61 | 0.87 | 1.96 | 1.49 | 1.6 | 0.61 | 0.3 | 15.08 |
| Site Type: Turf | Total Alfalfa ETr " | 1.97 | 3.33 | 5.03 | 5.77 | 6.3 | 8.44 | 7.96 | 6.23 | 5.01 | 3.56 | 2.82 | 1.91 | 58.33 |
| Total Growing Degee Days from March 1 | 0 | 0 | 206 | 216 | 316 | 546 | 695 | 578 | 408 | 235 | 131 | 57 | 3388 | |
| Gross Pond Evap | Inch | 1.65 | 2.8 | 4.23 | 4.85 | 5.29 | 7.09 | 6.69 | 5.23 | 4.21 | 2.99 | 2.37 | 1.6 | 49 |
| Net Pond Evap | Inch | 1.03 | 2.55 | 3.77 | 3.68 | 2.44 | 6.66 | 6.08 | 3.86 | 3.17 | 1.87 | 1.94 | 1.39 | 38.44 |
| Longmont West | Avg. Temp ° F | 29.64 | 40.76 | 48.12 | 49.78 | 55.9 | 69.41 | 74.14 | 68.44 | 62.4 | 48.74 | 44.44 | 31.81 | 51.97 |
| Ref date as of 12/31/2017 | Total Precip " | 0.64 | 0.2 | 0.69 | 1.38 | 4.77 | 0.27 | 0.25 | 1.53 | 1.57 | 1.54 | 0.31 | 0.12 | 13.27 |
| Site Type: Turf | Total Alfalfa ETr " | 1.75 | 3.03 | 4.64 | 5.48 | 5.85 | 7.46 | 7.18 | 5.85 | 4.63 | 3.41 | 2.51 | 1.73 | 53.52 |
| Total Growing Degee Days from March 1 | 0 | 0 | 205 | 208 | 300 | 535 | 689 | 562 | 409 | 254 | 167 | 81 | 3410 | |
| Gross Pond Evap | Inch | 1.47 | 2.55 | 3.9 | 4.6 | 4.91 | 6.27 | 6.03 | 4.91 | 3.89 | 2.86 | 2.11 | 1.45 | 44.95 |
| Net Pond Evap | Inch | 1.02 | 2.41 | 3.41 | 3.64 | 1.58 | 6.08 | 5.86 | 3.84 | 2.79 | 1.79 | 1.89 | 1.37 | 35.68 |
| Fort Lupton | Avg. Temp ° F | 29.38 | 40.52 | 48.24 | 49.97 | 55.97 | 69.66 | 74.55 | 69.29 | 62.91 | 49.09 | 43.52 | 30.93 | 52 |
| Ref date as of 12/31/2017 | Total Precip " | 0.59 | 0.29 | 0.74 | 1.83 | 4.65 | 0.21 | 0.21 | 1.81 | 1 | 1.59 | 0.25 | 0.31 | 13.48 |
| Site Type: Turf | Total Alfalfa ETr " | 1.97 | 3.75 | 5.54 | 6.17 | 6.71 | 9.25 | 8.85 | 7.35 | 5.88 | 4.13 | 3.02 | 2.21 | 64.83 |
| Total Growing Degee Days from March 1 | 0 | 0 | 223 | 225 | 319 | 548 | 696 | 601 | 429 | 242 | 170 | 76 | 3529 | |
| Gross Pond Evap | Inch | 1.65 | 3.15 | 4.65 | 5.18 | 5.64 | 7.77 | 7.43 | 6.17 | 4.94 | 3.47 | 2.54 | 1.86 | 54.45 |
| Net Pond Evap | Inch | 1.24 | 2.95 | 4.14 | 3.9 | 2.38 | 7.62 | 7.29 | 4.91 | 4.24 | 2.36 | 2.36 | 1.64 | 45.03 |
| Boulder NW | Avg. Temp ° F | 31.1 | 41.34 | 49.19 | 49.04 | 55.74 | 69.08 | 74.13 | 68.65 | 62.5 | 49.07 | 44.61 | 33.25 | 52.31 |
| Ref date as of 12/31/2017 | Total Precip " | 1.08 | 0.59 | 1.2 | 2.04 | 6.27 | 0.51 | 1.24 | 1.26 | 1.86 | 1.92 | 0.63 | 0.43 | 19.03 |
| Site Type: Turf | Total Alfalfa ETr " | 2.05 | 3.2 | 4.92 | 5.36 | 6.11 | 8 | 7.76 | 6.25 | 4.84 | 3.61 | 2.78 | 2.08 | 56.96 |
| Total Growing Degee Days from March 1 | 0 | 0 | 215 | 219 | 316 | 532 | 668 | 557 | 404 | 241 | 157 | 73 | 3382 | |
| Gross Pond Evap | Inch | 1.72 | 2.69 | 4.13 | 4.5 | 5.13 | 6.72 | 6.52 | 5.25 | 4.07 | 3.03 | 2.34 | 1.75 | 47.85 |
| Net Pond Evap | Inch | 0.97 | 2.28 | 3.29 | 3.07 | 0.74 | 6.36 | 5.65 | 4.37 | 2.76 | 1.69 | 1.89 | 1.45 | 34.52 |
| Boulder East | Avg. Temp ° F | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | 0 |
| Ref date as of 5/2/2010 | Total Precip " | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | 0 |
| Site Type: Turf | Total Alfalfa ETr " | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | 0 |
| Total Growing Degee Days from March 1 | 0 | 0 | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | 0 | |
| Gross Pond Evap | Inch | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | 0 |
| Net Pond Evap | Inch | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | 0 |
| Boulder Flatiron | Avg. Temp ° F | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | 0 |
| Ref date as of 5/2/2010 | Total Precip " | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | 0 |
| Site Type: Turf | Total Alfalfa ETr " | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | 0 |
| Total Growing Degee Days from March 1 | 0 | 0 | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | 0 | |
| Gross Pond Evap | Inch | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | 0 |
| Net Pond Evap | Inch | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | #N/A | 0 |
| Boulder SW | Avg. Temp ° F | 32.64 | 42.38 | 49.65 | 48.92 | 55.45 | 68.94 | 73.46 | 68.43 | 62.97 | 51.18 | 47.12 | 36.5 | 53.14 |
| Ref date as of 12/31/2017 | Total Precip " | 0.86 | 0.22 | 1.55 | 2.02 | 5.86 | 0.52 | 1.71 | 1.23 | 1.69 | 0.63 | 0.35 | 0.21 | 16.85 |
| Site Type: Turf | Total Alfalfa ETr " | 2.17 | 3.51 | 5.23 | 5.4 | 6.09 | 8.08 | 7.76 | 6.34 | 5.09 | 4.06 | 3.39 | 2.65 | 59.77 |
| Total Growing Degee Days from March 1 | 0 | 0 | 183 | 179 | 279 | 514 | 651 | 547 | 396 | 232 | 154 | 77 | 3212 | |
| Gross Pond Evap | Inch | 1.82 | 2.95 | 4.39 | 4.54 | 5.12 | 6.79 | 6.52 | 5.33 | 4.28 | 3.41 | 2.85 | 2.23 | 50.23 |
| Net Pond Evap | Inch | 1.22 | 2.79 | 3.31 | 3.12 | 1.01 | 6.42 | 5.32 | 4.46 | 3.09 | 2.97 | 2.6 | 2.08 | 38.39 |
| Greeley04 | Avg. Temp ° F | 27.33 | 37.43 | 45.65 | 49.41 | 55.76 | 68.78 | 73.4 | 67.2 | 61.65 | 46.69 | 40.27 | 27.85 | 50.12 |
| Ref date as of 12/3117/2017 | Total Precip " | 0.19 | 0.08 | 0.64 | 1.42 | 6.67 | 0.28 | 0.25 | 1.84 | 1.19 | 1.43 | 0.19 | 0.04 | 14.22 |
| Site Type: Fully irrigated | Total Alfalfa ETr " | 1.95 | 3.72 | 6.09 | 6.92 | 7.31 | 9.56 | 8.98 | 6.63 | 5.73 | 4.35 | 3.14 | 2.47 | 66.85 |
| Total Growing Degee Days from March 1 | 0 | 0 | 218 | 233 | 321 | 529 | 663 | 560 | 406 | 241 | 151 | 57 | 3379 | |
| Gross Pond Evap | Inch | 1.64 | 3.12 | 5.12 | 5.81 | 6.14 | 8.03 | 7.54 | 5.57 | 4.81 | 3.65 | 2.64 | 2.07 | 56.14 |
| Net Pond Evap | Inch | 1.51 | 3.07 | 4.67 | 4.82 | 1.47 | 7.83 | 7.37 | 4.28 | 3.98 | 2.65 | 2.5 | 2.05 | 46.2 |