Average annual temperature is 12.8 °C
Absolute maximum temperature: 32.3 °C
Absolute minimum temperature: -8.9 °C
Number of sunny days: 161 days
Number of rainy days: 195 days
Number of snow days: 9 days
Look at detailed online map of Eureka
* Weather data for Eureka 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) | 18.8 | 24.2 | 24.1 | 26.4 | 26.4 | 29.5 | 32.3 | 31.3 | 30.3 | 26.3 | 23.1 | 17.3 |
| Average daytime temperature (°C) | 10.0 | 12.9 | 13.5 | 19.1 | 21.0 | 24.1 | 28.7 | 27.0 | 24.8 | 19.0 | 13.8 | 9.9 |
| Average temperature (°C) | 4.7 | 7.4 | 7.4 | 12.4 | 15.1 | 18.4 | 22.7 | 21.5 | 18.5 | 12.9 | 7.2 | 4.6 |
| Average night temperature (°C) | 1.1 | 3.1 | 2.6 | 6.9 | 10.3 | 13.6 | 17.9 | 17.1 | 13.5 | 8.0 | 2.4 | 0.8 |
| Absolute minimum temperature (°C) | -8.8 | -8.9 | -8.3 | -1.1 | 3.4 | 8.6 | 13.9 | 12.4 | 9.7 | 1.1 | -5.9 | -6.3 |
| 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 | 14.0 | 14.0 | 14.0 | 12.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 10.0 | 10.9 | 12.0 | 13.1 | 14.1 | 14.6 | 14.4 | 13.5 | 12.4 | 11.3 | 10.2 | 9.7 |
| 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) | 4.3 | 5.9 | 8.1 | 9.4 | 10.1 | 11.1 | 11.8 | 10.1 | 10.4 | 8.4 | 7.9 | 5.8 |
| Precipitation (mm) | 114 | 152 | 90 | 101 | 101 | 69 | 57 | 132 | 74 | 45 | 50 | 103 |
| Sunny days | 11 | 11 | 14 | 15 | 11 | 10 | 7 | 11 | 17 | 19 | 19 | 16 |
| Rainy days | 17 | 17 | 15 | 15 | 20 | 20 | 24 | 20 | 13 | 12 | 9 | 13 |
| Snow days | 3 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 2 |
The best time to visit Eureka during the most sunny months:
The largest precipitation sum in Eureka is at