Thunder Bay Climate by Month
The temperature in Thunder Bay can vary greatly throughout the year.
The temperatures shift from warm
to very cold.
It receives a moderate amount of precipitation.
Let’s explore the climate details in depth to provide you with a complete overview.
Average day and night temperature
Depending on the time of the year, temperatures range from comfortable to very cold in Thunder Bay. On average, daytime temperatures range from a comfortable 23°C in August to a very cold -8°C in January. Nighttime temperatures can drop, with averages reaching -17°C in January.
The mean minimum and maximum temperatures throughout the year
Precipitation and rainy days
Generally, Thunder Bay has a moderate amount of precipitation, averaging 744 mm of rain/snowfall annually. The seasons in Thunder Bay, bring significant changes in precipitation. The wettest month, September, receives moderate rainfall, with an average of 93 mm of precipitation. This rainfall is distributed across 13 rainy days. In contrast, the driest month, February, experiences much less snowfall, totaling 30 mm over 9 snowy days. These distinct seasonal differences provide diverse experiences throughout the year.The mean monthly precipitation over the year, including rain, hail and snow
The average number of days each month with precipitation
The best time of year to visit Thunder Bay in Canada
During the months of July and August you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.Other facts from our historical weather data:
The coldest season / winter is in the following months: January, February, March and December.
August has an average maximum temperature of 23°C and is the warmest month of the year.
The coldest month is January with an average maximum temperature of -8°C.
September tops the wettest month list with 93 mm of rainfall.
February is the driest month with 30 mm of precipitation.
No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.
