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Thunder Bay June Weather

Averages and records for weather in Thunder Bay, Ontario in the month of June.

Typical Thunder Bay June Weather 1991–2020
Average daily high	21.5 °C
Average daily low	7.7 °C
Average monthly precipitation	8.5 cm
Daily chance of precipitation	48.6%

Thunder Bay June Weather Records 1941–2024
Highest temperature	39.0 °C	June 18, 1995
Lowest temperature	-2.8 °C	June 8, 1949
Highest daily low	19.8 °C	June 6, 1988
Lowest daily high	6.7 °C	June 2, 1969
Hottest average high temperature	24.2 °C	2021
Coldest average high temperature	16.8 °C	1969
Most daily precipitation	8.3 cm	June 28, 1996
Most monthly precipitation	21.3 cm	2016

Note: Daily averages are a moving average which includes 14 days before and after

Day	Average (°C)		Record (°C)
Day	High	Low	High	Low
June 1	19.1	5.0	30.3	-1.7
June 2	19.3	5.2	31.1	-1.6
June 3	19.5	5.5	31.1	-2.4
June 4	19.7	5.7	30.6	-2.2
June 5	19.8	5.9	34.5	-1.7
June 6	20.1	6.1	34.8	-1.2
June 7	20.2	6.2	31.7	-2.8
June 8	20.4	6.4	31.1	-2.8
June 9	20.5	6.5	30.6	-1.6
June 10	20.7	6.7	31.2	-1.4
June 11	20.8	6.9	32.9	-1.1
June 12	21.0	7.1	35.6	0.0
June 13	21.1	7.3	30.6	-1.1
June 14	21.2	7.4	30.2	-1.4
June 15	21.3	7.6	30.6	0.6
June 16	21.5	7.8	30.6	1.1
June 17	21.6	8.0	31.7	0.6
June 18	21.7	8.1	39.0	1.1
June 19	21.9	8.3	34.4	1.5
June 20	22.0	8.5	33.9	0.3
June 21	22.2	8.6	31.1	-1.1
June 22	22.4	8.8	31.7	1.0
June 23	22.4	9.0	32.6	0.1
June 24	22.6	9.1	32.2	0.9
June 25	22.7	9.2	32.9	1.2
June 26	22.9	9.3	34.0	0.9
June 27	23.0	9.5	32.2	2.0
June 28	23.1	9.6	31.5	0.5
June 29	23.2	9.8	33.0	2.5
June 30	23.4	9.9	33.4	2.2

Weather Station Details

Years	Station	Coordinates
2004–2024	Thunder Bay CS	location
1941–2003	Thunder Bay A	location