Measurements:
°C
°F
Thunder Bay
12°F
NE 14 mph
Feels like: 0°F
Precip: 100%
World Resorts Canada Thunder Bay Weather June Weather in Thunder Bay

Thunder Bay Weather: June

Average Day Temperature: 64.4°F
Average Night Temperature: 52.4°F
Sea Water Temperature: 47.6°F
Number of Sunny Days: 9 days
Sunshine Hours: 15.8 - 16.1 hours
Number of Rainy Days: 1 day
Precipitation Totals: 0.9 in

Air Temperature in June, °F

Select Year: 2025 2024 2023

The highest day temperature in June 2025 was 78°F. The lowest night temperature was 39°F. The average values for day and night temperatures during June were 65.8°F и 50.3°F respectivly.

Thunder Bay Water Sea Temperature in June, °F

Select Year: 2025 2024 2023

The average sea surface temperature in June 2025 for Thunder Bay was 52.0°F. The maximum and minimum values were 45.8°F and 59.0°F respectively.

Sunny, Cloudy and Gloomy days

You can expect various weather conditions during June. Be ready for sunny, cloudy or even gloomy days.

Precipitation Totals in June, in

Precipitation total in June for Thunder Bay is 0.9 in. It makes june one of the most rainy months of the year.

Wind Speed in June, mph

The average wind speed in June is 6.3 mph. It makes June one of the most windless months of the year for Thunder Bay.

Average Sunny Hours Per Day

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Thunder Bay in June is 8.3 hours.

Best Time to Visit Thunder Bay
The most sunny months:
September 14 days
August 14 days
July 12 days
The most warm months:
July 71.5 °F
August 71.2 °F
June 64.4 °F
Warmest sea temperature:
August 64.9 °F
September 61.3 °F
July 60.6 °F
The most cold months:
February 10.3 °F
January 10.9 °F
December 19.5 °F
The most rainy months:
September 2 days
August 2 days
April 2 days
The most windy months:
November 9 mph
December 9 mph
April 9 mph

Thunder Bay on the Weather Map

24 Hours Weather Forecast
Thunder Bay
Local time: 01:04
05 dec, friday
0300 8°F
E
9 mph
0600 6°F
E
6 mph
0900 6°F
E
4 mph
1200 12°F
E
4 mph
1500 18°F
NE
7 mph
1800 18°F
E
7 mph
2100 16°F
E
8 mph
06 dec, saturday
0000 14°F
SE
14 mph