CanadaThe weather in July in Thunder Bay
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.
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.
Average temperatures and precipitation
This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in July for Thunder Bay, Canada. A low precipitation value usually indicates little to no rainfall on that day in recent years, while a higher value suggests more frequent rainfall.
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.
Rainfall amount
In July, there is an average of 107 mm of precipitation, spread over 14 days. The wind speed is around 4 Bft, mostly coming from the Southwest.
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.
July weather comparison
| Thunder Bay | New York | |
|---|---|---|
| Average temperature | 25°C | 31°C |
| Max. temperature | 27°C | 33°C |
| Min. temperature | 11°C | -5°C |
| Total precipitation | 107 mm | 160 mm |
| Rainy days | 14 days | 18 days |
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.
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.
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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.
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.
Temperature charts
These charts show the average temperatures in July in Thunder Bay, Canada. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in July in Thunder Bay
Temperature in July in Thunder Bay over the years
Precipitation charts
These charts show the average amount of precipitation in July in Thunder Bay, Canada. Precipitation is always measured as water, even when it falls as snow or hail The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Daily Precipitation in July in Thunder Bay
Total precipitation in July in Thunder Bay over the years
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.
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.