Average weather for Thunder Bay in June
It's pleasantly warm in June in Thunder Bay with an average temperature of 21°C. Temperatures this month range from a low of 18°C to a high of 25°C. At night, you can expect temperatures between 6°C and 13°C.
Start of June
The month of June starts in Thunder Bay with mild temps, averaging around 21°C during the day and nights around 9°C. You can expect regular precipitation, but there will also be some sunny days in the early part of the month.
Mid June
By mid-June, daytime temps rise to around 22°C, with nights around 10°C. There’s a chance of some showers during this time, but plenty of dry and sunny days too.
End of June
By the end of June, the average daytime temperature in Thunder Bay is around 23°C, while nighttime temps are about 12°C. Expect regular precipitation, but if you’re lucky, you’ll also get some dry and sunny days.
In June, there is an average of 123 mm of precipitation, spread over 11 days. The wind speed is around 4 Bft, mostly coming from the South.
Thunder Bay in June |
New York | ||
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21°C | 27°C | |
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25°C | 31°C | |
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18°C | -5°C | |
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123 mm | 78 mm | |
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11 days | 11 days |
UV index
The UV index is a maximum of 8 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
Is June a good time to visit Thunder Bay?
Looking for sun? June isn’t a good month to be in Thunder Bay. The temperature is nice, but there’s too much chance of rain.
Temperature records
With 30°C in 2021, Thunder Bay reached the highest temperature in June over the past 10 years. The lowest daytime temperature in this month was 8°C in 2019. The extreme nighttime temperatures ranged from a lowest recorded value of -3°C to a highest value of 17°C.
Check out the climate of Thunder Bay for all months and discover the best travel time
Curious about the weather in other parts of Canada? Check out the climate and weather for spots like Vancouver, Toronto, Niagara Falls, or explore other destinations in Canada.
Daily Temperature in June in Thunder Bay
This chart shows the average daily high and low temperatures in June for Thunder Bay, in degrees Celsius. The red line represents the highs, and the blue line shows the lows. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, provide the average temperatures for this month.
Daily Precipitation in June in Thunder Bay
The chart below shows the average daily precipitation in June for Thunder Bay, measured in millimeters over the past few years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are listed at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that it rained more often. But remember, it’s just an average, and every day can be different. Based on historical weather data for June, you can expect about 11 days of precipitation in Thunder Bay.
Daily UV index in June in Thunder Bay
This chart shows the average daily UV index in June in Thunder Bay, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in June in Thunder Bay over the years
This chart shows the average temperature in June in Thunder Bay, measured in degrees Celsius, over the past few years.
Total precipitation in June in Thunder Bay over the years
This chart shows the average precipitation in June in Thunder Bay, measured in millimeters over the past years. Precipitation is always measured as water, whether it’s snow or hail.
Daily weather in June for Thunder Bay
Click on any day in June to get detailed info about the usual weather on that day in Thunder Bay. Check out the historical temperatures and precipitation over the past 10 years on this day.






























Weather experiences in June in Thunder Bay
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Average weather in Thunder Bay by month
Click on a month below to see detailed weather info for Thunder Bay. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
Or check out the climate of Thunder Bay for all months at once