Average annual temperature is 10.0 °C
Absolute maximum temperature: 36.2 °C
Absolute minimum temperature: -25.3 °C
Number of sunny days: 192 days
Number of rainy days: 141 days
Number of snow days: 32 days
Look at detailed online map of Dubuque County
* Weather data for Dubuque County 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) | 8.1 | 8.7 | 20.2 | 24.4 | 30.2 | 32.1 | 32.7 | 36.2 | 32.5 | 27.9 | 16.1 | 11.5 |
| Average daytime temperature (°C) | -0.1 | 2.5 | 6.2 | 14.8 | 22.7 | 27.3 | 27.4 | 27.4 | 24.0 | 15.3 | 8.0 | 5.0 |
| Average temperature (°C) | -4.0 | -2.7 | 1.0 | 8.5 | 16.2 | 21.4 | 22.2 | 22.2 | 18.8 | 11.2 | 3.4 | 1.2 |
| Average night temperature (°C) | -7.0 | -6.9 | -2.9 | 3.4 | 10.3 | 15.7 | 17.1 | 17.5 | 14.4 | 7.6 | -0.2 | -1.3 |
| Absolute minimum temperature (°C) | -25.3 | -23.8 | -14.0 | -4.5 | 1.3 | 8.0 | 12.4 | 10.5 | 9.0 | -5.0 | -13.8 | -8.9 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.5 | 10.6 | 11.9 | 13.4 | 14.6 | 15.2 | 14.9 | 13.9 | 12.5 | 11.1 | 9.8 | 9.1 |
| Daylight minimum duration (h) | 9.0 | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 4.0 | 7.0 | 6.6 | 9.1 | 11.9 | 12.6 | 12.3 | 11.4 | 9.7 | 7.0 | 7.1 | 4.1 |
| Precipitation (mm) | 62 | 76 | 78 | 82 | 63 | 23 | 94 | 55 | 97 | 120 | 26 | 46 |
| Sunny days | 16 | 15 | 12 | 16 | 23 | 17 | 13 | 17 | 12 | 13 | 22 | 16 |
| Rainy days | 5 | 8 | 14 | 13 | 8 | 13 | 18 | 14 | 18 | 16 | 6 | 8 |
| Snow days | 10 | 5 | 5 | 1 | 0 | 0 | 0 | 0 | 0 | 2 | 2 | 7 |
The best time to visit Dubuque County during the most sunny months:
The largest precipitation sum in Dubuque County is at