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Thunder Bay Weather in July
Thunder Bay in July sees high daytime temperatures of 23°C (73°F) and nighttime lows of 14°C (57°F). Rainfall is fairly high this month at around 79 mm (3.1 in), so pack a rain jacket to stay dry.
Rainfall in Thunder Bay in July
This month experiences about 12 days of rain according to historical data, averaging 79 mm (3.1 in). Rain this month is fairly typical, a standard mix of wet and dry days with no particularly heavy or persistent showers.
Temperature in Thunder Bay in July
July is a excellent month in Thunder Bay, with 23°C (73°F) during the day and 14°C (57°F) at night. The summer season takes place during July. Conditions stay fairly consistent through the month, making it easier to plan what to wear. Nights drop to around 14°C (57°F), which is noticeably cooler than the daytime. A light jacket for the evening is a sensible addition, and the cool nights tend to make sleeping comfortable.So this is a great month to visit if you prefer dry days with pleasant temperatures.
Thunder Bay Temperature in July
Min Temperature
14°C (57°F)
Max Temperature
23°C (73°F)
Chance of Rain
38%
Precipitation
79 mm (3.1 in)
Rainy days
12 days
Thunder Bay Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Thunder Bay - and find the best time to visit.
Best Places in Canada in July
Find out more about the weather in Canada and which places have the best travel conditions in this month. See all of Canada in July →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Thunder Bay in July
For Thunder Bay in July, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. Rain is likely on several days, so bring a good rain jacket.
What To Do in Thunder Bay in July
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Cycling9/10 -
Walking9/10 -
Camping8/10 -
Outdoor sports9/10
Thunder Bay 3-Day Forecast
More climate data for Thunder Bay
See the full Thunder Bay climate overview or explore weather in Canada.
Popular in July
Where to go in July - average daytime high across popular destinations.
Niagara Falls
27°C (81°F) Montréal28°C (82°F) Ottawa27°C (81°F) Quebec City
26°C (79°F) Toronto26°C (79°F) Calgary24°C (75°F) Vancouver22°C (72°F) Whistler
19°C (66°F) Bucket list
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The 5 most beautiful lakes in Canada
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