Average annual temperature is 11.5 °C
Absolute maximum temperature: 32.3 °C
Absolute minimum temperature: -10.6 °C
Number of sunny days: 143 days
Number of rainy days: 203 days
Number of snow days: 19 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) | 15.5 | 19.8 | 16.4 | 25.5 | 29.6 | 30.3 | 32.3 | 29.8 | 30.7 | 27.9 | 18.5 | 16.1 |
| Average daytime temperature (°C) | 5.6 | 9.1 | 7.6 | 16.0 | 19.8 | 23.8 | 26.5 | 25.1 | 22.6 | 17.0 | 10.3 | 8.4 |
| Average temperature (°C) | 1.9 | 2.2 | 3.1 | 10.3 | 14.3 | 19.2 | 22.3 | 20.9 | 18.6 | 13.2 | 6.1 | 4.9 |
| Average night temperature (°C) | -0.9 | -1.9 | -0.4 | 5.4 | 9.2 | 14.8 | 18.6 | 17.6 | 15.1 | 10.2 | 2.9 | 2.5 |
| Absolute minimum temperature (°C) | -9.5 | -10.6 | -6.2 | -2.4 | 1.7 | 9.8 | 15.0 | 11.2 | 8.0 | 0.8 | -6.7 | -4.9 |
| 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 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.6 | 10.6 | 11.9 | 13.3 | 14.5 | 15.1 | 14.8 | 13.8 | 12.5 | 11.1 | 9.9 | 9.2 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 2.9 | 6.3 | 6.1 | 9.1 | 11.1 | 11.5 | 11.9 | 10.8 | 9.5 | 6.5 | 6.5 | 3.6 |
| Precipitation (mm) | 132 | 64 | 110 | 113 | 58 | 130 | 127 | 120 | 63 | 87 | 47 | 95 |
| Sunny days | 10 | 13 | 9 | 12 | 21 | 16 | 5 | 8 | 12 | 11 | 17 | 9 |
| Rainy days | 14 | 14 | 16 | 17 | 10 | 14 | 26 | 23 | 18 | 20 | 11 | 20 |
| Snow days | 7 | 1 | 6 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 2 |
The best time to visit Gresham during the most sunny months:
The largest precipitation sum in Gresham is at