CanadaAverage weather for Thunder Bay in July
It's warm in July in Thunder Bay with an average temperature of 25°C. Temperatures this month range from a low of 22°C to a high of 27°C. At night, you can expect temperatures between 11°C and 16°C.
Start of July
The month of July starts in Thunder Bay with warm temps, averaging around 25°C during the day and nights around 13°C. You can expect regular precipitation, but there will also be some sunny days in the early part of the month.
Mid July
By mid-July, daytime temps stay steady at around 25°C, with nights around 13°C. During this part of the month, you might see regular precipitation, but there will also be some sunny days.
End of July
By the end of July, the average daytime temperature in Thunder Bay is around 26°C, while nighttime temps are about 14°C. A shower might pop up, but overall, the weather will be dry and sunny.
Because temperatures drop in the evening, wearing layers is recommended.
In July, there is an average of 107 mm of precipitation, spread over 10 days. The wind speed is around 4 Bft, mostly coming from the Southwest.
Thunder Bay in July |
New York | ||
|---|---|---|---|
 Average temperature |
25°C | 31°C | |
 Max. temperature |
27°C | 33°C | |
| Min. temperature |
22°C | -5°C | |
 Total precipitation |
107 mm | 160 mm | |
| Rainy days |
10 days | 18 days | |
June
UV index
The UV index is a maximum of 9 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 July a good time to visit Thunder Bay?
Looking for sun? July 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 33°C in 2021, Thunder Bay reached the highest temperature in July over the past 10 years. The lowest daytime temperature in this month was 15°C in 2022. The extreme nighttime temperatures ranged from a lowest recorded value of 4°C to a highest value of 22°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 July in Thunder Bay
This chart shows the average daily high and low temperatures in July 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 July in Thunder Bay
The chart below shows the average daily precipitation in July 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 July, you can expect about 10 days of precipitation in Thunder Bay.
Daily UV index in July in Thunder Bay
This chart shows the average daily UV index in July 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 July in Thunder Bay over the years
This chart shows the average temperature in July in Thunder Bay, measured in degrees Celsius, over the past few years.
Total precipitation in July in Thunder Bay over the years
This chart shows the average precipitation in July 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 July for Thunder Bay
Click on any day in July 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 July 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
