Weather in Thunder Bay: June
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Average day temperature: | 63.0°F |
| Average night temperature: | 52.2°F | |
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Sea water temperature: | 47.8°F |
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Number of sunny days: | 9 days |
| Day length: | 15.8 - 16.1 hours | |
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Number of rainy days: | 1 day |
| Precipitation totals: | 0.9 in. | |
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forecast
| Thunder Bay |
temperature
| Thunder Bay |
Air temperature in June, °F
The highest day temperature during June of 2025 was 75°F. At the same time the lowest night temperature was 40°F. Daily and nightly averages during June were 64.2°F and 50.3°F.
Sea water temperature in Thunder Bay in June, °F
The average sea water temperature in June of 2025 was 51.8°F. The highest and lowest sea temperatures during the month were 58.1°F and 46.2°F.
Number of sunny, partly cloudy and cloudy days in June is almost equal.
Precipitation total in June, in.
Precipitation total value in Thunder Bay in June is 0.9 in. Other months of the year show relatively similar values.
The average wind speed value in June is 6.3 mph It makes June one of the least 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 June is: 8.1.
Best time for vacation in Thunder Bay
Thunder Bay on a weather map
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