Average annual temperature is 19.0 °C
Absolute maximum temperature: 39.8 °C
Absolute minimum temperature: -4.5 °C
Number of sunny days: 284 days
Number of rainy days: 79 days
Number of snow days: 2 days
Look at detailed online map of Helvetia
* Weather data for Helvetia 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) | 22.2 | 23.3 | 24.3 | 33.2 | 31.7 | 39.2 | 39.8 | 38.2 | 37.8 | 33.9 | 29.5 | 23.5 |
| Average daytime temperature (°C) | 14.0 | 15.8 | 18.6 | 26.1 | 28.8 | 33.0 | 37.3 | 34.0 | 33.0 | 28.3 | 21.4 | 17.6 |
| Average temperature (°C) | 7.5 | 8.4 | 11.7 | 18.4 | 21.6 | 25.9 | 31.0 | 28.0 | 26.4 | 21.7 | 15.0 | 11.3 |
| Average night temperature (°C) | 2.9 | 3.2 | 5.9 | 10.9 | 14.3 | 18.3 | 24.8 | 22.7 | 20.1 | 15.6 | 9.7 | 6.1 |
| Absolute minimum temperature (°C) | -4.2 | -4.5 | -2.8 | 1.0 | 8.8 | 11.4 | 21.4 | 18.4 | 16.8 | 8.4 | 4.1 | 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 | 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) | 8.1 | 8.9 | 10.0 | 12.1 | 12.3 | 12.7 | 12.5 | 11.5 | 11.3 | 10.3 | 9.2 | 8.5 |
| Precipitation (mm) | 42 | 26 | 25 | 0 | 11 | 0 | 14 | 53 | 14 | 4 | 16 | 40 |
| Sunny days | 20 | 18 | 25 | 30 | 25 | 30 | 20 | 14 | 23 | 28 | 25 | 26 |
| Rainy days | 9 | 10 | 6 | 0 | 6 | 0 | 11 | 17 | 7 | 3 | 5 | 5 |
| Snow days | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Helvetia is at