Average annual temperature is 17.4 °C
Absolute maximum temperature: 37.2 °C
Absolute minimum temperature: -5.3 °C
Number of sunny days: 190 days
Number of rainy days: 175 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) | 23.1 | 27.2 | 28.6 | 29.8 | 30.6 | 32.5 | 34.9 | 37.2 | 34.5 | 28.0 | 24.9 | 22.7 |
| Average daytime temperature (°C) | 15.0 | 17.4 | 18.5 | 23.4 | 24.6 | 29.0 | 32.5 | 32.4 | 28.0 | 23.0 | 16.7 | 14.7 |
| Average temperature (°C) | 9.8 | 11.9 | 12.6 | 17.3 | 19.2 | 23.2 | 27.0 | 26.9 | 22.6 | 17.4 | 11.3 | 9.1 |
| Average night temperature (°C) | 5.8 | 7.9 | 7.8 | 12.1 | 14.5 | 18.3 | 22.7 | 22.5 | 18.3 | 12.9 | 7.1 | 4.9 |
| Absolute minimum temperature (°C) | -1.8 | -5.3 | -0.9 | 2.9 | 8.5 | 13.1 | 20.2 | 18.5 | 13.5 | 5.9 | -3.7 | -1.7 |
| 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 | 13.0 | 12.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 10.1 | 10.9 | 12.0 | 13.1 | 14.0 | 14.5 | 14.3 | 13.5 | 12.4 | 11.3 | 10.3 | 9.8 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 6.5 | 7.0 | 8.5 | 9.3 | 9.8 | 11.3 | 11.3 | 11.0 | 9.7 | 8.9 | 7.4 | 6.8 |
| Precipitation (mm) | 103 | 73 | 61 | 183 | 90 | 90 | 92 | 143 | 111 | 17 | 61 | 176 |
| Sunny days | 17 | 10 | 17 | 14 | 18 | 11 | 9 | 14 | 18 | 23 | 21 | 18 |
| Rainy days | 14 | 18 | 14 | 16 | 13 | 19 | 22 | 17 | 12 | 8 | 9 | 13 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Eureka during the most sunny months:
The largest precipitation sum in Eureka is at