Weather in Duluth: May
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Average day temperature: | 56.4°F |
| Average night temperature: | 44.3°F | |
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Sea water temperature: | 41.9°F |
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Number of sunny days: | 12 days |
| Day length: | 14.4 - 15.6 hours | |
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Number of rainy days: | 1 day |
| Precipitation totals: | 0.9 in. | |
| more information | ||
14 days
forecast
forecast
| Duluth |
sea water
temperature
temperature
| Duluth |
Air temperature in May, °F
Show year:
2026
2025
2024
The highest day temperature during May of 2026 was 75°F. At the same time the lowest night temperature was 33°F. Daily and nightly averages during May were 53.3°F and 44.5°F.
Sea water temperature in Duluth in May, °F
Show year:
2026
2025
2024
The average sea water temperature in May of 2026 was 42.5°F. The highest and lowest sea temperatures during the month were 47.1°F and 37.0°F.
Sunny, partly cloudy and cloudy days
Number of sunny, partly cloudy and cloudy days in May is almost equal.
Precipitation total in May, in.
Precipitation total value in Duluth in May is 0.9 in. Other months of the year show relatively similar values.
Wind speed in May, mph
The average wind speed value in May is 7.8 mph
Average sunny hours
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 May is: 8.4.
Best time for vacation in Duluth
Duluth on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Duluth
Local time: 00:24
May 31, sunday
0300
50°F
W
6 mph
6 mph
0600
50°F
SW
6 mph
6 mph
0900
52°F
W
6 mph
6 mph
1200
57°F
W
6 mph
6 mph
1500
59°F
W
7 mph
7 mph
1800
55°F
W
7 mph
7 mph
2100
48°F
SW
4 mph
4 mph
June 01, monday
0000
46°F
SW
3 mph
3 mph
