Average annual temperature is 15.4 °C
Absolute maximum temperature: 36.6 °C
Absolute minimum temperature: -6.8 °C
Number of sunny days: 193 days
Number of rainy days: 172 days
Look at detailed online map of City of McHenry
* Weather data for City of McHenry 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) | 19.2 | 23.7 | 26.3 | 29.1 | 30.1 | 34.8 | 36.6 | 36.3 | 32.5 | 29.7 | 26.9 | 17.5 |
| Average daytime temperature (°C) | 11.0 | 14.3 | 15.2 | 21.1 | 25.2 | 29.5 | 31.3 | 30.1 | 28.2 | 21.6 | 15.8 | 11.8 |
| Average temperature (°C) | 6.4 | 8.1 | 8.9 | 14.2 | 19.1 | 22.9 | 25.7 | 24.6 | 22.0 | 16.1 | 9.6 | 6.5 |
| Average night temperature (°C) | 3.0 | 3.7 | 4.1 | 8.6 | 13.7 | 17.2 | 21.0 | 20.1 | 16.8 | 11.8 | 5.2 | 2.8 |
| Absolute minimum temperature (°C) | -4.6 | -6.8 | -6.5 | 1.0 | 4.7 | 11.6 | 16.3 | 14.5 | 12.1 | -1.0 | -4.2 | -5.6 |
| 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 | 14.0 | 12.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.9 | 10.8 | 12.0 | 13.2 | 14.2 | 14.7 | 14.4 | 13.6 | 12.4 | 11.2 | 10.2 | 9.6 |
| 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) | 4.9 | 7.4 | 7.6 | 9.6 | 11.1 | 11.8 | 11.4 | 10.3 | 10.8 | 7.7 | 7.8 | 6.3 |
| Precipitation (mm) | 129 | 99 | 192 | 110 | 56 | 74 | 113 | 113 | 12 | 81 | 49 | 77 |
| Sunny days | 13 | 14 | 16 | 17 | 18 | 17 | 10 | 12 | 18 | 20 | 21 | 17 |
| Rainy days | 18 | 14 | 15 | 13 | 13 | 13 | 21 | 19 | 12 | 11 | 9 | 14 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit City of McHenry during the most sunny months:
The largest precipitation sum in City of McHenry is at