Average annual temperature is 10.5 °C
Absolute maximum temperature: 36.1 °C
Absolute minimum temperature: -4.7 °C
Number of sunny days: 152 days
Number of rainy days: 212 days
Number of snow days: 1 day
Look at detailed online map of Grays Harbor County
* Weather data for Grays Harbor 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) | 12.9 | 13.7 | 17.3 | 27.1 | 31.9 | 29.2 | 30.8 | 36.1 | 29.7 | 25.2 | 15.3 | 13.4 |
| Average daytime temperature (°C) | 8.7 | 8.1 | 9.9 | 11.7 | 19.9 | 20.2 | 23.1 | 25.4 | 20.7 | 16.4 | 10.5 | 9.9 |
| Average temperature (°C) | 5.7 | 4.3 | 4.9 | 7.1 | 13.7 | 14.2 | 16.6 | 18.5 | 14.5 | 11.5 | 6.7 | 7.2 |
| Average night temperature (°C) | 3.6 | 1.8 | 1.6 | 4.0 | 9.0 | 9.2 | 11.3 | 13.6 | 10.4 | 8.6 | 4.0 | 5.0 |
| Absolute minimum temperature (°C) | -4.7 | -4.3 | -3.8 | -2.6 | 4.1 | 4.3 | 8.5 | 9.0 | 3.4 | -1.8 | -2.2 | -1.3 |
| 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 | 8.0 |
| Daylight mean duration (h) | 9.0 | 10.3 | 11.9 | 13.6 | 15.1 | 15.8 | 15.5 | 14.2 | 12.6 | 10.9 | 9.4 | 8.6 |
| Daylight minimum duration (h) | 8.0 | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 8.0 | 8.0 |
| Sunshine mean duration (h) | 2.7 | 5.0 | 6.4 | 6.4 | 11.1 | 11.7 | 12.6 | 10.9 | 8.1 | 6.1 | 4.9 | 2.8 |
| Precipitation (mm) | 244 | 195 | 218 | 236 | 24 | 16 | 26 | 37 | 112 | 164 | 248 | 371 |
| Sunny days | 8 | 7 | 4 | 5 | 22 | 22 | 23 | 20 | 12 | 12 | 13 | 4 |
| Rainy days | 23 | 20 | 27 | 25 | 9 | 8 | 8 | 11 | 18 | 19 | 17 | 27 |
| Snow days | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Grays Harbor County during the most sunny months:
Months with the longest average daylight duration in Grays Harbor County:
The largest precipitation sum in Grays Harbor County is at