Average annual temperature is 12.0 °C
Absolute maximum temperature: 38.7 °C
Absolute minimum temperature: -17.8 °C
Number of sunny days: 229 days
Number of rainy days: 115 days
Number of snow days: 21 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) | 10.5 | 14.0 | 22.2 | 29.5 | 30.6 | 33.5 | 36.6 | 38.7 | 35.7 | 31.7 | 20.7 | 14.0 |
| Average daytime temperature (°C) | 1.8 | 6.0 | 9.2 | 18.8 | 25.5 | 29.4 | 29.5 | 30.6 | 28.6 | 18.3 | 12.3 | 6.0 |
| Average temperature (°C) | -2.5 | -1.0 | 2.2 | 11.4 | 18.9 | 23.4 | 23.9 | 24.6 | 21.9 | 12.8 | 6.1 | 1.4 |
| Average night temperature (°C) | -5.7 | -5.4 | -2.7 | 5.3 | 13.0 | 17.5 | 18.9 | 19.6 | 16.3 | 8.2 | 1.3 | -2.2 |
| Absolute minimum temperature (°C) | -17.6 | -17.8 | -10.6 | -5.2 | 3.0 | 10.5 | 12.8 | 12.9 | 9.9 | -6.7 | -6.2 | -8.2 |
| 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 | 9.3 |
| 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) | 5.6 | 7.8 | 8.5 | 10.5 | 11.4 | 12.9 | 11.7 | 11.5 | 10.5 | 7.8 | 7.2 | 4.9 |
| Precipitation (mm) | 51 | 33 | 34 | 15 | 64 | 61 | 155 | 28 | 29 | 54 | 13 | 42 |
| Sunny days | 20 | 21 | 21 | 24 | 14 | 16 | 12 | 19 | 22 | 17 | 23 | 20 |
| Rainy days | 6 | 3 | 7 | 5 | 17 | 14 | 19 | 12 | 8 | 13 | 4 | 7 |
| Snow days | 5 | 4 | 3 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 3 | 4 |
The best time to visit Gresham during the most sunny months:
The largest precipitation sum in Gresham is at