Evapotranspiration Calculations
Grafton Airport - October 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) |
| 01/10/2026 | 4.3 | 0.0 | | 26.9 | 7.2 | 98 | 37 | 1.87 | 24.02 |
| 02/10/2026 | 4.4 | 0.0 | | 28.2 | 8.0 | 98 | 41 | 1.74 | 24.16 |
| 03/10/2026 | 3.7 | 0.0 | | 26.7 | 9.9 | 97 | 45 | 2.26 | 17.60 |
| 04/10/2026 | 4.0 | 0.0 | | 28.5 | 12.5 | 97 | 45 | 1.92 | 19.15 |
| 05/10/2026 | 2.1 | 0.0 | | 25.5 | 12.9 | 97 | 61 | 0.79 | 10.03 |
| 06/10/2026 | 4.1 | 4.4 | | 30.9 | 16.3 | 97 | 45 | 1.61 | 18.70 |
| 07/10/2026 | 4.1 | 0.0 | | 24.3 | 13.9 | 97 | 49 | 4.27 | 18.21 |
| 08/10/2026 | 4.1 | 0.0 | | 24.5 | 12.3 | 87 | 41 | 1.74 | 22.24 |
| 09/10/2026 | 5.1 | 0.0 | | 30.5 | 12.1 | 95 | 38 | 2.25 | 24.75 |
| 10/10/2026 | 3.4 | 0.0 | | 27.5 | 13.1 | 97 | 44 | 2.04 | 13.93 |
| 11/10/2026 | 5.2 | 0.8 | | 34.0 | 14.1 | 97 | 32 | 1.42 | 24.84 |
| 12/10/2026 | 5.7 | 0.0 | | 35.7 | 14.4 | 98 | 34 | 1.82 | 25.18 |
| 13/10/2026 | 2.8 | 2.4 | | 27.4 | 19.7 | 96 | 64 | 2.12 | 11.29 |
| 14/10/2026 | 2.8 | 29.2 | | 22.2 | 16.0 | 96 | 63 | 3.57 | 12.07 |
| 15/10/2026 | 3.3 | 0.8 | | 21.4 | 13.5 | 91 | 56 | 3.41 | 15.20 |
| 16/10/2026 | 2.7 | 0.2 | | 20.1 | 13.5 | 96 | 64 | 2.69 | 14.01 |
| 17/10/2026 | 3.2 | 18.4 | | 21.1 | 14.2 | 97 | 58 | 2.55 | 17.30 |
| 18/10/2026 | 3.4 | 11.8 | | 22.5 | 12.8 | 97 | 50 | 2.33 | 17.44 |
| 19/10/2026 | 1.9 | 18.2 | | 18.4 | 14.1 | 97 | 81 | 2.02 | 9.96 |
| 20/10/2026 | 2.7 | 25.0 | | 21.2 | 14.4 | 97 | 74 | 2.59 | 14.90 |
| 21/10/2026 | 4.0 | 12.0 | | 27.1 | 16.1 | 98 | 55 | 1.04 | 21.34 |
| 22/10/2026 | 1.6 | 11.0 | | 19.4 | 18.2 | 97 | 85 | 2.43 | 6.97 |
| 23/10/2026 | 2.3 | 30.4 | | 23.4 | 16.7 | 98 | 77 | 1.46 | 11.65 |
| 24/10/2026 | 4.2 | 8.2 | | 26.7 | 16.8 | 98 | 65 | 2.09 | 22.39 |
| 25/10/2026 | 4.4 | 0.0 | | 29.2 | 18.7 | 96 | 59 | 3.95 | 18.06 |
| 26/10/2026 | 4.7 | 18.4 | | 32.7 | 18.0 | 98 | 45 | 2.72 | 17.74 |
| Totals: | 94.2 | 191.2 | | | | | | | |
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