Average annual temperature is 20.9 °C
Absolute maximum temperature: 42.1 °C
Absolute minimum temperature: -2.4 °C
Number of sunny days: 198 days
Number of rainy days: 167 days
Look at detailed online map of Old Union
* Weather data for Old 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) | 24.6 | 26.7 | 30.4 | 30.4 | 31.0 | 36.9 | 39.4 | 42.1 | 40.8 | 33.2 | 28.2 | 25.2 |
| Average daytime temperature (°C) | 16.9 | 18.4 | 22.7 | 23.2 | 27.4 | 32.8 | 36.6 | 39.7 | 34.4 | 26.8 | 19.7 | 17.7 |
| Average temperature (°C) | 12.0 | 12.1 | 16.9 | 17.8 | 22.7 | 27.5 | 31.1 | 33.4 | 28.8 | 21.3 | 14.6 | 11.9 |
| Average night temperature (°C) | 8.0 | 7.9 | 12.8 | 13.6 | 18.7 | 23.1 | 26.0 | 27.1 | 23.9 | 16.8 | 10.8 | 7.4 |
| Absolute minimum temperature (°C) | -2.2 | -2.4 | 2.1 | 8.9 | 13.7 | 18.6 | 23.9 | 22.9 | 19.4 | 4.8 | 2.3 | 0.0 |
| 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) | 10.4 | 11.1 | 12.0 | 12.9 | 13.8 | 14.2 | 14.0 | 13.3 | 12.4 | 11.4 | 10.6 | 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) | 6.8 | 7.0 | 7.7 | 8.0 | 8.8 | 10.9 | 11.9 | 12.2 | 10.5 | 8.0 | 6.6 | 7.3 |
| Precipitation (mm) | 72 | 123 | 128 | 217 | 180 | 110 | 15 | 4 | 53 | 67 | 73 | 57 |
| Sunny days | 20 | 13 | 13 | 7 | 11 | 10 | 22 | 29 | 18 | 17 | 17 | 21 |
| Rainy days | 11 | 15 | 18 | 23 | 20 | 20 | 9 | 2 | 12 | 14 | 13 | 10 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Old Union during the most sunny months:
The largest precipitation sum in Old Union is at