Weather in Duluth: January
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Average day temperature: | 17.9°F |
| Average night temperature: | 11.3°F | |
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Sea water temperature: | 33.8°F |
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Number of sunny days: | 4 days |
| Day length: | 8.6 - 9.6 hours | |
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Number of rainy days: | 0 days |
| Precipitation totals: | 0.2 in. | |
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forecast
| Duluth |
temperature
| Duluth |
Air temperature in January, °F
The highest day temperature during January of 2026 was 38°F. At the same time the lowest night temperature was -16°F. Daily and nightly averages during January were 14.6°F and 9.6°F.
Sea water temperature in Duluth in January, °F
The average sea water temperature in January of 2026 was 34.2°F. The highest and lowest sea temperatures during the month were 35.8°F and 32.9°F.
Mostly all days in January are cloudy but sunny and partly cloudy days are also possible.
Precipitation total in January, in.
Precipitation total value in Duluth in January is 0.2 in. Other months of the year show relatively similar values.
The average wind speed value in January is 7.6 mph
This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in January is: 3.4.
Best time for vacation in Duluth
Duluth on a weather map
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