Average annual temperature is 18.5 °C
Absolute maximum temperature: 36.2 °C
Absolute minimum temperature: -1.9 °C
Number of sunny days: 182 days
Number of rainy days: 183 days
Look at detailed online map of Gresham
* Weather data for Gresham United States is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 23.1 | 26.0 | 28.8 | 30.7 | 33.2 | 33.3 | 36.2 | 35.9 | 33.9 | 28.5 | 26.5 | 22.9 |
| Average daytime temperature (°C) | 16.4 | 19.5 | 20.7 | 25.1 | 26.4 | 29.9 | 33.1 | 32.4 | 28.8 | 24.1 | 18.8 | 16.0 |
| Average temperature (°C) | 10.9 | 13.5 | 14.7 | 18.6 | 20.5 | 24.1 | 27.3 | 26.8 | 23.3 | 18.4 | 13.0 | 10.6 |
| Average night temperature (°C) | 6.6 | 9.3 | 9.7 | 13.3 | 15.4 | 19.3 | 23.4 | 22.7 | 18.5 | 13.8 | 8.5 | 6.6 |
| Absolute minimum temperature (°C) | -1.9 | -1.5 | -0.4 | 5.1 | 8.2 | 13.0 | 20.3 | 19.8 | 12.9 | 7.8 | -0.6 | -1.7 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 |
| Daylight mean duration (h) | 10.2 | 11.0 | 12.0 | 13.0 | 13.9 | 14.4 | 14.2 | 13.4 | 12.4 | 11.3 | 10.4 | 9.9 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 | 9.0 |
| Sunshine mean duration (h) | 6.7 | 7.4 | 8.6 | 10.3 | 9.6 | 11.1 | 11.5 | 11.0 | 9.8 | 8.7 | 7.8 | 6.9 |
| Precipitation (mm) | 116 | 113 | 68 | 100 | 100 | 105 | 174 | 203 | 48 | 59 | 55 | 144 |
| Sunny days | 17 | 14 | 17 | 16 | 15 | 12 | 1 | 6 | 17 | 24 | 21 | 22 |
| Rainy days | 14 | 14 | 14 | 14 | 16 | 18 | 30 | 25 | 13 | 7 | 9 | 9 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Gresham during the most sunny months:
The largest precipitation sum in Gresham is at