Evapotranspiration Calculations
Portland Airport - July 2026 daily calculations
| Date |
Evapotrans-
piration (mm) 0000- 2400 |
Rain (mm) 0900- 0900 |
Pan Evaporation (mm) 0900- 0900 |
Max Temp |
Min Temp |
Max Rel Hum (%) |
Min Rel Hum (%) |
Average 10m Wind Speed (m/sec) |
Solar Radiation (MJ/sq m) |
| 01/07/2026 | 1.4 | 0.8 | | 17.1 | 9.5 | 98 | 66 | 5.31 | 8.50 |
| 02/07/2026 | 1.7 | 9.4 | | 13.4 | 10.6 | 95 | 61 | 8.42 | 8.48 |
| 03/07/2026 | 1.4 | 17.4 | | 12.3 | 6.5 | 94 | 69 | 8.76 | 6.46 |
| 04/07/2026 | 1.2 | 1.6 | | 12.3 | 8.9 | 95 | 63 | 3.99 | 6.56 |
| 05/07/2026 | 1.0 | 2.2 | | 13.1 | 5.2 | 96 | 68 | 3.02 | 6.37 |
| 06/07/2026 | 0.9 | 0.8 | | 14.0 | 1.9 | 99 | 61 | 2.20 | 9.30 |
| 07/07/2026 | 0.8 | 0.2 | | 13.9 | 1.8 | 99 | 63 | 1.62 | 9.34 |
| 08/07/2026 | 0.6 | 0.0 | | 13.1 | 0.5 | 100 | 78 | 1.74 | 9.28 |
| 09/07/2026 | 1.0 | 0.2 | | 14.9 | 3.6 | 100 | 59 | 2.46 | 9.44 |
| 10/07/2026 | 1.1 | 0.2 | | 15.4 | 5.0 | 99 | 68 | 3.50 | 8.40 |
| 11/07/2026 | 1.3 | 0.0 | | 14.2 | 6.9 | 94 | 72 | 7.11 | 5.04 |
| 12/07/2026 | 1.7 | 26.2 | | 13.9 | 6.7 | 95 | 67 | 10.71 | 5.64 |
| 13/07/2026 | 1.4 | 6.8 | | 15.1 | 10.5 | 96 | 75 | 9.82 | 6.73 |
| 14/07/2026 | 1.9 | 3.8 | | 15.5 | 9.7 | 93 | 62 | 8.28 | 9.09 |
| 15/07/2026 | 1.2 | 1.0 | | 15.0 | 10.7 | 98 | 74 | 5.47 | 6.70 |
| 16/07/2026 | 0.8 | 1.8 | | 15.1 | 11.2 | 99 | 82 | 2.65 | 7.14 |
| Totals: | 19.4 | 72.4 | | | | | | | |
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