Average annual temperature is 7.9 °C
Absolute maximum temperature: 34.5 °C
Absolute minimum temperature: -29.9 °C
Number of sunny days: 205 days
Number of rainy days: 118 days
Number of snow days: 42 days
Look at detailed online map of Altona
* Weather data for Altona 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) | 10.0 | 12.1 | 16.4 | 25.4 | 24.5 | 31.4 | 34.5 | 33.4 | 32.9 | 27.8 | 20.6 | 12.8 |
| Average daytime temperature (°C) | 0.0 | 4.7 | 6.5 | 14.1 | 19.8 | 22.2 | 29.0 | 27.7 | 24.5 | 17.5 | 9.9 | 5.7 |
| Average temperature (°C) | -4.3 | -3.1 | -0.4 | 5.5 | 12.9 | 15.8 | 20.9 | 19.9 | 16.0 | 9.4 | 2.1 | -0.4 |
| Average night temperature (°C) | -8.7 | -9.8 | -6.1 | -1.3 | 6.8 | 10.1 | 12.8 | 13.2 | 8.8 | 2.9 | -3.5 | -4.9 |
| Absolute minimum temperature (°C) | -26.4 | -29.9 | -16.9 | -12.7 | 1.8 | 7.1 | 8.0 | 9.3 | 4.0 | -16.9 | -12.6 | -12.5 |
| 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 | 15.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.7 | 10.7 | 12.0 | 13.3 | 14.4 | 15.0 | 14.7 | 13.7 | 12.5 | 11.1 | 10.0 | 9.4 |
| 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) | 6.1 | 8.3 | 9.5 | 10.5 | 10.5 | 11.2 | 13.1 | 11.4 | 10.9 | 9.2 | 7.9 | 6.7 |
| Precipitation (mm) | 31 | 24 | 32 | 47 | 128 | 123 | 30 | 57 | 31 | 16 | 20 | 20 |
| Sunny days | 17 | 17 | 16 | 18 | 6 | 10 | 15 | 17 | 20 | 24 | 22 | 23 |
| Rainy days | 3 | 3 | 7 | 8 | 25 | 20 | 16 | 14 | 10 | 5 | 6 | 1 |
| Snow days | 11 | 8 | 8 | 4 | 0 | 0 | 0 | 0 | 0 | 2 | 2 | 7 |
The best time to visit Altona during the most sunny months:
The largest precipitation sum in Altona is at