Average annual temperature is 20.0 °C
Absolute maximum temperature: 40.1 °C
Absolute minimum temperature: -3.6 °C
Number of sunny days: 169 days
Number of rainy days: 196 days
Look at detailed online map of Union
* Weather data for Union 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) | 24.3 | 29.1 | 29.1 | 30.8 | 33.6 | 37.0 | 38.2 | 40.1 | 35.7 | 31.9 | 28.0 | 25.1 |
| Average daytime temperature (°C) | 17.6 | 20.3 | 23.0 | 24.4 | 30.1 | 33.5 | 34.8 | 37.3 | 33.0 | 26.8 | 20.0 | 16.7 |
| Average temperature (°C) | 12.4 | 14.1 | 16.4 | 18.1 | 23.0 | 26.4 | 28.0 | 30.3 | 26.1 | 20.2 | 14.0 | 10.8 |
| Average night temperature (°C) | 8.2 | 9.8 | 11.5 | 13.4 | 17.4 | 20.8 | 23.1 | 24.4 | 20.5 | 14.7 | 9.3 | 6.3 |
| Absolute minimum temperature (°C) | -1.5 | -0.9 | -3.6 | 7.2 | 10.6 | 17.9 | 19.6 | 19.4 | 15.6 | 6.6 | -0.6 | -0.8 |
| 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 | 10.0 |
| Daylight mean duration (h) | 10.3 | 11.1 | 12.0 | 13.0 | 13.8 | 14.2 | 14.0 | 13.3 | 12.4 | 11.4 | 10.5 | 10.1 |
| Daylight minimum duration (h) | 10.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 | 10.0 |
| Sunshine mean duration (h) | 6.3 | 7.3 | 8.9 | 8.6 | 11.0 | 11.5 | 11.5 | 11.7 | 11.0 | 8.9 | 6.8 | 7.8 |
| Precipitation (mm) | 182 | 191 | 87 | 200 | 69 | 116 | 89 | 23 | 31 | 21 | 53 | 105 |
| Sunny days | 12 | 9 | 13 | 10 | 11 | 3 | 10 | 23 | 17 | 24 | 16 | 21 |
| Rainy days | 19 | 19 | 18 | 20 | 20 | 27 | 21 | 8 | 13 | 7 | 14 | 10 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Union during the most sunny months:
The largest precipitation sum in Union is at