Weather in Thunder Bay: March
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Average day temperature: | 27.5°F |
| Average night temperature: | 21.5°F | |
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Sea water temperature: | 33.0°F |
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Number of sunny days: | 6 days |
| Day length: | 11.1 - 12.8 hours | |
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Number of days with precipitation: | 1 day |
| Precipitation totals: | 0.6 in. | |
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forecast
| Thunder Bay |
temperature
| Thunder Bay |
Air temperature in March, °F
The highest day temperature during March of 2025 was 43°F. At the same time the lowest night temperature was 0°F. Daily and nightly averages during March were 30.6°F and 21.5°F.
Sea water temperature in Thunder Bay in March, °F
The average sea water temperature in March of 2025 was 33.1°F. The highest and lowest sea temperatures during the month were 33.8°F and 32.4°F.
Mostly all days in March are cloudy but sunny and partly cloudy days are also possible.
Precipitation total in March, in.
Precipitation total value in Thunder Bay in March is 0.6 in. Other months of the year show relatively similar values.
The average wind speed value in March is 8.5 mph It makes March one of the most windy months of the year.
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 March is: 4.6.
Best time for vacation in Thunder Bay
Thunder Bay on a weather map
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