Average annual temperature is 11.9 °C
Absolute maximum temperature: 33.1 °C
Absolute minimum temperature: -17.8 °C
Number of sunny days: 172 days
Number of rainy days: 179 days
Number of snow days: 14 days
Look at detailed online map of Monmouth
* Weather data for Monmouth 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 | 17.9 | 18.3 | 26.6 | 31.0 | 32.7 | 33.0 | 33.1 | 32.1 | 29.5 | 22.5 | 15.9 |
| Average daytime temperature (°C) | 4.8 | 8.5 | 9.3 | 17.4 | 22.3 | 27.1 | 28.9 | 26.8 | 24.9 | 18.0 | 11.2 | 8.0 |
| Average temperature (°C) | 1.3 | 2.4 | 3.6 | 10.6 | 15.8 | 20.7 | 23.4 | 21.7 | 19.5 | 13.2 | 5.6 | 4.4 |
| Average night temperature (°C) | -1.5 | -1.9 | -0.5 | 4.8 | 9.8 | 14.8 | 18.3 | 16.9 | 14.5 | 9.2 | 1.6 | 1.6 |
| Absolute minimum temperature (°C) | -11.1 | -17.8 | -7.9 | -2.9 | 1.4 | 10.3 | 14.4 | 10.2 | 9.1 | -3.5 | -8.2 | -5.1 |
| 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 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.6 | 10.6 | 11.9 | 13.3 | 14.5 | 15.1 | 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) | 3.0 | 7.5 | 6.7 | 8.9 | 10.4 | 11.0 | 12.1 | 10.6 | 9.2 | 7.1 | 7.1 | 4.1 |
| Precipitation (mm) | 84 | 80 | 111 | 82 | 45 | 61 | 76 | 75 | 38 | 69 | 21 | 56 |
| Sunny days | 9 | 18 | 12 | 12 | 20 | 13 | 8 | 15 | 18 | 13 | 20 | 14 |
| Rainy days | 15 | 9 | 15 | 18 | 11 | 17 | 23 | 16 | 12 | 17 | 10 | 16 |
| Snow days | 7 | 1 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 |
The best time to visit Monmouth during the most sunny months:
The largest precipitation sum in Monmouth is at