Average annual temperature is 19.4 °C
Absolute maximum temperature: 40.9 °C
Absolute minimum temperature: -2.5 °C
Number of sunny days: 216 days
Number of rainy days: 149 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) | 24.2 | 26.4 | 26.8 | 29.7 | 31.2 | 38.4 | 38.1 | 40.9 | 39.6 | 32.4 | 27.6 | 22.3 |
| Average daytime temperature (°C) | 15.1 | 16.6 | 20.4 | 22.4 | 27.7 | 33.3 | 34.9 | 37.6 | 32.5 | 24.9 | 18.4 | 15.1 |
| Average temperature (°C) | 10.4 | 10.9 | 14.9 | 16.8 | 22.5 | 27.1 | 29.1 | 31.3 | 26.6 | 19.5 | 13.2 | 9.8 |
| Average night temperature (°C) | 6.5 | 6.8 | 10.6 | 12.5 | 18.0 | 22.3 | 24.7 | 26.3 | 22.0 | 15.5 | 9.0 | 5.8 |
| Absolute minimum temperature (°C) | -1.4 | -2.5 | -0.2 | 7.5 | 10.5 | 19.4 | 22.0 | 20.6 | 19.1 | 2.3 | -0.1 | -0.1 |
| 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) | 10.2 | 11.0 | 12.0 | 13.0 | 13.9 | 14.3 | 14.1 | 13.3 | 12.4 | 11.4 | 10.5 | 10.0 |
| 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 | 9.0 |
| Sunshine mean duration (h) | 6.3 | 6.6 | 7.9 | 8.5 | 10.5 | 11.4 | 12.0 | 12.2 | 10.4 | 8.0 | 7.8 | 7.3 |
| Precipitation (mm) | 108 | 129 | 144 | 140 | 93 | 75 | 96 | 2 | 68 | 174 | 92 | 80 |
| Sunny days | 21 | 10 | 12 | 14 | 17 | 13 | 17 | 26 | 20 | 22 | 22 | 22 |
| Rainy days | 10 | 18 | 19 | 16 | 14 | 17 | 14 | 5 | 10 | 9 | 8 | 9 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Monticello during the most sunny months:
The largest precipitation sum in Monticello is at