Average annual temperature is 4.7 °C
Absolute maximum temperature: 32.7 °C
Absolute minimum temperature: -32.6 °C
Number of sunny days: 239 days
Number of rainy days: 95 days
Number of snow days: 31 days
Look at detailed online map of Forest Grove
* Weather data for Forest Grove Canada is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 3.5 | 3.4 | 1.5 | 17.3 | 31.4 | 30.6 | 31.0 | 32.7 | 28.6 | 19.8 | 7.5 | 5.4 |
| Average daytime temperature (°C) | -7.5 | -7.3 | -5.3 | 8.1 | 23.3 | 26.1 | 24.9 | 25.5 | 22.6 | 9.7 | 2.6 | 0.8 |
| Average temperature (°C) | -10.6 | -12.8 | -11.3 | 1.2 | 15.5 | 19.8 | 18.7 | 18.8 | 15.7 | 4.9 | -1.3 | -3.4 |
| Average night temperature (°C) | -13.6 | -16.9 | -16.1 | -4.1 | 8.5 | 13.7 | 13.1 | 13.2 | 9.8 | 1.0 | -4.1 | -6.5 |
| Absolute minimum temperature (°C) | -27.0 | -32.6 | -27.1 | -23.5 | 1.5 | 9.0 | 7.4 | 6.7 | 4.7 | -10.4 | -16.7 | -11.8 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 9.0 | 10.0 | 12.0 | 14.0 | 16.0 | 16.0 | 16.0 | 15.0 | 13.0 | 11.0 | 9.0 | 8.0 |
| Daylight mean duration (h) | 8.3 | 9.9 | 11.9 | 13.9 | 15.7 | 16.7 | 16.2 | 14.6 | 12.7 | 10.6 | 8.8 | 7.8 |
| Daylight minimum duration (h) | 7.0 | 9.0 | 10.0 | 12.0 | 14.0 | 16.0 | 15.0 | 13.0 | 11.0 | 9.0 | 8.0 | 7.0 |
| Sunshine mean duration (h) | 2.9 | 6.5 | 8.6 | 9.7 | 12.0 | 13.8 | 13.4 | 11.2 | 9.9 | 6.7 | 4.9 | 4.9 |
| Precipitation (mm) | 10 | 12 | 4 | 21 | 22 | 42 | 38 | 61 | 5 | 25 | 10 | 6 |
| Sunny days | 23 | 18 | 24 | 20 | 22 | 15 | 14 | 17 | 19 | 18 | 23 | 26 |
| Rainy days | 2 | 2 | 1 | 6 | 9 | 15 | 17 | 14 | 11 | 10 | 4 | 4 |
| Snow days | 6 | 8 | 6 | 4 | 0 | 0 | 0 | 0 | 0 | 3 | 3 | 1 |
The best time to visit Forest Grove during the most sunny months:
Months with the longest average daylight duration in Forest Grove:
The largest precipitation sum in Forest Grove is at