Average annual temperature is 10.6 °C
Absolute maximum temperature: 39.9 °C
Absolute minimum temperature: -9.9 °C
Number of sunny days: 159 days
Number of rainy days: 201 days
Number of snow days: 5 days
Look at detailed online map of Clackamas County
* Weather data for Clackamas County 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) | 12.6 | 14.2 | 16.4 | 29.2 | 30.4 | 31.2 | 33.3 | 39.9 | 30.3 | 26.5 | 16.8 | 15.1 |
| Average daytime temperature (°C) | 7.8 | 7.2 | 7.9 | 11.9 | 20.4 | 22.8 | 27.7 | 28.6 | 21.4 | 17.0 | 11.8 | 10.5 |
| Average temperature (°C) | 4.2 | 2.3 | 3.5 | 6.8 | 13.9 | 15.2 | 19.4 | 20.7 | 15.0 | 11.6 | 7.3 | 6.9 |
| Average night temperature (°C) | 1.5 | -0.9 | 0.4 | 3.2 | 8.6 | 8.8 | 11.5 | 13.7 | 10.2 | 8.1 | 4.5 | 4.7 |
| Absolute minimum temperature (°C) | -6.1 | -9.9 | -4.6 | -1.8 | 3.5 | 3.8 | 8.0 | 7.4 | 5.7 | -0.8 | -2.7 | -2.7 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.2 | 10.4 | 11.9 | 13.5 | 14.9 | 15.6 | 15.2 | 14.1 | 12.5 | 11.0 | 9.6 | 8.8 |
| Daylight minimum duration (h) | 8.0 | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 8.0 |
| Sunshine mean duration (h) | 4.0 | 4.7 | 5.8 | 6.3 | 10.5 | 12.2 | 13.5 | 11.7 | 8.6 | 6.8 | 5.3 | 3.1 |
| Precipitation (mm) | 129 | 169 | 221 | 262 | 43 | 52 | 6 | 21 | 96 | 149 | 212 | 356 |
| Sunny days | 7 | 9 | 4 | 5 | 17 | 21 | 27 | 24 | 12 | 14 | 11 | 8 |
| Rainy days | 24 | 15 | 26 | 25 | 14 | 9 | 4 | 7 | 18 | 17 | 19 | 23 |
| Snow days | 0 | 4 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Clackamas County during the most sunny months:
Months with the longest average daylight duration in Clackamas County:
The largest precipitation sum in Clackamas County is at