Average annual temperature is 16.7 °C
Absolute maximum temperature: 36.3 °C
Absolute minimum temperature: -4.9 °C
Number of sunny days: 173 days
Number of rainy days: 192 days
Look at detailed online map of Duluth
* Weather data for Duluth 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) | 19.7 | 24.2 | 24.9 | 27.2 | 30.1 | 32.2 | 35.4 | 36.3 | 32.6 | 28.0 | 25.4 | 19.9 |
| Average daytime temperature (°C) | 13.7 | 16.9 | 17.9 | 21.2 | 24.5 | 28.5 | 32.4 | 31.4 | 27.6 | 22.7 | 17.2 | 13.3 |
| Average temperature (°C) | 8.7 | 11.6 | 12.1 | 15.4 | 19.1 | 22.8 | 26.3 | 25.7 | 22.0 | 17.1 | 11.6 | 8.1 |
| Average night temperature (°C) | 4.8 | 7.5 | 6.9 | 10.5 | 14.6 | 17.8 | 21.1 | 21.3 | 17.1 | 12.3 | 7.1 | 3.9 |
| Absolute minimum temperature (°C) | -4.1 | -3.4 | -4.9 | 4.2 | 6.2 | 13.8 | 18.6 | 17.0 | 12.3 | 6.0 | -3.4 | -3.5 |
| 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 | 14.4 | 14.2 | 13.4 | 12.4 | 11.3 | 10.4 | 9.9 |
| Daylight minimum duration (h) | 9.0 | 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) | 5.6 | 6.1 | 8.4 | 9.0 | 10.0 | 10.9 | 11.8 | 10.4 | 10.1 | 8.8 | 6.9 | 6.4 |
| Precipitation (mm) | 144 | 124 | 150 | 144 | 129 | 120 | 75 | 154 | 68 | 39 | 57 | 103 |
| Sunny days | 13 | 10 | 16 | 13 | 12 | 12 | 9 | 9 | 18 | 23 | 20 | 18 |
| Rainy days | 18 | 18 | 15 | 17 | 19 | 18 | 22 | 22 | 12 | 8 | 10 | 13 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Duluth during the most sunny months:
The largest precipitation sum in Duluth is at