Average annual temperature is 20.4 °C
Absolute maximum temperature: 37.7 °C
Absolute minimum temperature: 0.4 °C
Number of sunny days: 160 days
Number of rainy days: 205 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) | 24.8 | 28.3 | 29.6 | 30.0 | 34.4 | 35.1 | 36.5 | 37.7 | 33.2 | 29.4 | 27.8 | 24.7 |
| Average daytime temperature (°C) | 19.5 | 22.9 | 23.7 | 26.7 | 28.8 | 30.9 | 33.0 | 34.6 | 30.4 | 26.0 | 20.9 | 17.5 |
| Average temperature (°C) | 13.7 | 16.6 | 17.6 | 20.4 | 22.6 | 25.1 | 27.2 | 28.2 | 24.6 | 20.1 | 15.4 | 12.5 |
| Average night temperature (°C) | 9.4 | 12.4 | 13.0 | 15.4 | 17.8 | 20.8 | 23.5 | 23.7 | 20.3 | 15.2 | 11.2 | 8.7 |
| Absolute minimum temperature (°C) | 0.4 | 2.1 | 1.6 | 9.4 | 12.6 | 17.5 | 21.3 | 22.0 | 16.9 | 9.0 | 1.8 | 0.7 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.0 | 11.0 | 12.0 | 13.0 | 13.0 | 14.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 |
| Daylight mean duration (h) | 10.4 | 11.1 | 12.0 | 12.9 | 13.7 | 14.1 | 13.9 | 13.2 | 12.4 | 11.4 | 10.6 | 10.2 |
| Daylight minimum duration (h) | 10.0 | 10.0 | 11.0 | 12.0 | 13.0 | 13.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 | 10.0 |
| Sunshine mean duration (h) | 7.4 | 8.3 | 8.9 | 9.9 | 10.5 | 10.1 | 10.9 | 10.9 | 9.7 | 9.4 | 7.1 | 6.8 |
| Precipitation (mm) | 149 | 100 | 134 | 110 | 77 | 182 | 153 | 149 | 95 | 49 | 60 | 210 |
| Sunny days | 16 | 18 | 14 | 9 | 10 | 6 | 3 | 6 | 13 | 24 | 20 | 21 |
| Rainy days | 15 | 10 | 17 | 21 | 21 | 24 | 28 | 25 | 17 | 7 | 10 | 10 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Monticello is at