Average annual temperature is 8.0 °C
Absolute maximum temperature: 34.7 °C
Absolute minimum temperature: -17.6 °C
Number of sunny days: 228 days
Number of rainy days: 85 days
Number of snow days: 52 days
Look at detailed online map of Delta County
* Weather data for Delta 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) | 5.1 | 7.1 | 7.6 | 18.8 | 24.9 | 29.7 | 34.7 | 32.2 | 29.3 | 22.2 | 15.8 | 8.0 |
| Average daytime temperature (°C) | -0.3 | 0.4 | 2.7 | 9.8 | 19.8 | 24.5 | 31.5 | 29.0 | 23.6 | 16.1 | 8.2 | 2.2 |
| Average temperature (°C) | -4.0 | -4.3 | -1.8 | 3.2 | 12.9 | 17.1 | 23.9 | 21.9 | 16.7 | 9.5 | 2.5 | -2.6 |
| Average night temperature (°C) | -7.1 | -8.4 | -5.6 | -1.7 | 6.8 | 10.4 | 16.9 | 15.7 | 10.7 | 4.6 | -1.7 | -7.3 |
| Absolute minimum temperature (°C) | -15.0 | -16.0 | -13.0 | -10.1 | 1.8 | 5.6 | 9.9 | 13.1 | 5.9 | -8.9 | -13.1 | -17.6 |
| 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 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.8 | 10.7 | 12.0 | 13.2 | 14.3 | 14.8 | 14.6 | 13.7 | 12.4 | 11.2 | 10.1 | 9.5 |
| 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) | 5.7 | 8.0 | 7.8 | 10.9 | 12.2 | 12.8 | 13.3 | 12.3 | 11.2 | 9.4 | 8.3 | 7.2 |
| Precipitation (mm) | 77 | 48 | 98 | 51 | 18 | 15 | 1 | 9 | 23 | 49 | 20 | 43 |
| Sunny days | 13 | 16 | 11 | 16 | 16 | 22 | 29 | 23 | 21 | 22 | 22 | 17 |
| Rainy days | 5 | 1 | 8 | 10 | 15 | 8 | 2 | 8 | 9 | 8 | 7 | 4 |
| Snow days | 13 | 11 | 12 | 4 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 10 |
The best time to visit Delta County during the most sunny months:
The largest precipitation sum in Delta County is at