Average annual temperature is 9.3 °C
Absolute maximum temperature: 36.6 °C
Absolute minimum temperature: -27.3 °C
Number of sunny days: 202 days
Number of rainy days: 132 days
Number of snow days: 31 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) | 10.3 | 12.1 | 18.3 | 28.5 | 27.5 | 30.7 | 34.9 | 36.6 | 34.6 | 28.3 | 22.2 | 15.0 |
| Average daytime temperature (°C) | -1.0 | 4.1 | 7.4 | 15.4 | 21.5 | 25.4 | 28.5 | 29.3 | 26.0 | 15.9 | 10.6 | 5.6 |
| Average temperature (°C) | -4.7 | -2.8 | -0.4 | 7.4 | 15.3 | 19.3 | 21.8 | 22.5 | 19.0 | 9.4 | 4.0 | 0.2 |
| Average night temperature (°C) | -8.2 | -7.1 | -5.3 | 1.1 | 9.7 | 13.9 | 15.7 | 17.0 | 13.1 | 4.1 | -0.3 | -3.2 |
| Absolute minimum temperature (°C) | -23.0 | -27.3 | -12.0 | -8.3 | -1.2 | 9.3 | 10.9 | 12.0 | 7.2 | -10.0 | -10.3 | -9.6 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 9.0 | 11.0 | 12.0 | 13.0 | 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 | 13.8 | 12.5 | 11.1 | 9.8 | 9.2 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 14.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 5.7 | 8.1 | 8.6 | 10.0 | 10.5 | 12.0 | 12.5 | 11.7 | 10.6 | 7.9 | 7.7 | 5.6 |
| Precipitation (mm) | 54 | 15 | 29 | 19 | 108 | 86 | 37 | 34 | 23 | 62 | 20 | 20 |
| Sunny days | 19 | 21 | 17 | 17 | 8 | 10 | 11 | 14 | 22 | 20 | 22 | 21 |
| Rainy days | 2 | 4 | 7 | 10 | 23 | 20 | 20 | 17 | 8 | 9 | 6 | 6 |
| Snow days | 10 | 3 | 7 | 3 | 0 | 0 | 0 | 0 | 0 | 2 | 2 | 4 |
The best time to visit Duluth during the most sunny months:
The largest precipitation sum in Duluth is at