Average annual temperature is 12.9 °C
Absolute maximum temperature: 36.3 °C
Absolute minimum temperature: -14.1 °C
Number of sunny days: 247 days
Number of rainy days: 101 days
Number of snow days: 17 days
Look at detailed online map of Roundtop (historical)
* Weather data for Roundtop (historical) 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) | 12.6 | 14.8 | 20.1 | 25.3 | 28.1 | 34.2 | 36.3 | 36.2 | 32.8 | 27.0 | 22.1 | 13.9 |
| Average daytime temperature (°C) | 6.3 | 8.7 | 12.8 | 19.7 | 24.0 | 28.7 | 33.9 | 30.6 | 27.3 | 21.8 | 13.4 | 6.7 |
| Average temperature (°C) | 0.9 | 2.1 | 6.3 | 11.7 | 17.1 | 22.0 | 27.1 | 23.8 | 20.7 | 14.5 | 6.6 | 0.8 |
| Average night temperature (°C) | -3.2 | -2.5 | 0.6 | 4.0 | 10.0 | 14.2 | 19.9 | 17.5 | 13.8 | 7.9 | 1.6 | -3.6 |
| Absolute minimum temperature (°C) | -14.1 | -11.6 | -6.0 | -6.0 | 6.3 | 9.2 | 14.1 | 13.8 | 9.5 | -5.9 | -6.7 | -10.4 |
| 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) | 10.1 | 10.9 | 12.0 | 13.1 | 14.0 | 14.4 | 14.2 | 13.4 | 12.4 | 11.3 | 10.4 | 9.9 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 | 9.0 |
| Sunshine mean duration (h) | 7.8 | 8.5 | 9.8 | 11.4 | 12.1 | 12.8 | 12.7 | 11.2 | 10.8 | 10.3 | 8.6 | 7.9 |
| Precipitation (mm) | 14 | 19 | 24 | 3 | 30 | 17 | 6 | 16 | 20 | 2 | 13 | 45 |
| Sunny days | 21 | 17 | 18 | 25 | 16 | 22 | 21 | 15 | 19 | 25 | 23 | 25 |
| Rainy days | 5 | 4 | 10 | 5 | 15 | 8 | 10 | 16 | 11 | 5 | 7 | 5 |
| Snow days | 5 | 7 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 |
The largest precipitation sum in Roundtop (historical) is at