Average annual temperature is 12.1 °C
Absolute maximum temperature: 33.2 °C
Absolute minimum temperature: -11.8 °C
Number of sunny days: 179 days
Number of rainy days: 175 days
Number of snow days: 11 days
Look at detailed online map of Monticello
* Weather data for Monticello 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) | 17.3 | 19.2 | 19.6 | 26.5 | 30.7 | 33.2 | 32.6 | 32.9 | 32.4 | 29.3 | 21.9 | 16.0 |
| Average daytime temperature (°C) | 5.0 | 9.5 | 9.8 | 17.5 | 22.4 | 26.7 | 28.7 | 27.0 | 25.1 | 18.0 | 11.5 | 8.5 |
| Average temperature (°C) | 1.7 | 3.1 | 4.0 | 10.9 | 15.9 | 20.6 | 23.5 | 21.8 | 19.6 | 13.4 | 5.9 | 4.7 |
| Average night temperature (°C) | -1.1 | -1.4 | -0.2 | 5.4 | 10.0 | 14.8 | 18.9 | 17.1 | 14.7 | 9.4 | 2.0 | 1.9 |
| Absolute minimum temperature (°C) | -11.0 | -11.8 | -7.8 | -1.0 | 2.0 | 9.9 | 14.0 | 10.9 | 9.2 | -2.9 | -8.2 | -4.4 |
| 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 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.6 | 10.7 | 11.9 | 13.3 | 14.4 | 15.0 | 14.8 | 13.8 | 12.5 | 11.1 | 9.9 | 9.3 |
| 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) | 2.8 | 7.3 | 7.0 | 8.8 | 10.4 | 10.6 | 11.9 | 10.6 | 9.4 | 6.8 | 7.5 | 4.0 |
| Precipitation (mm) | 114 | 77 | 120 | 64 | 48 | 114 | 93 | 83 | 33 | 68 | 22 | 42 |
| Sunny days | 9 | 18 | 12 | 15 | 20 | 15 | 9 | 16 | 17 | 13 | 21 | 14 |
| Rainy days | 17 | 10 | 15 | 15 | 11 | 15 | 22 | 15 | 13 | 17 | 9 | 16 |
| Snow days | 5 | 0 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 |
The best time to visit Monticello during the most sunny months:
The largest precipitation sum in Monticello is at