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February Weather in Thunder Bay, Canada

Last updated: June 18, 2025

In February, the average temperature in Thunder Bay, Canada hovers around -13°C (9°F). While it can drop as low as -35°C (-30°F), temperatures can occasionally peak at 10°C (49°F). Expect 35 mm (1.4 in) of precipitation over about 6 days, coupled with a high average humidity level of 94%. Stay warm and prepared for the chilly conditions!

February Temperature in Thunder Bay

In February in Thunder Bay, the average temperature is -13°C (9°F). The maximum can reach 10°C (49°F), and the minimum can be as low as -35°C (-30°F). Travelers should prepare for extremely cold conditions and pack appropriate winter gear to enjoy their visit.

February Weather in Thunder Bay: Daily Temperature Highs, Lows, and Averages

The chart illustrates February temperature patterns in Thunder Bay, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Thunder Bay, February typically has an average temperature of -13°C (9°F), with highs reaching up to 10°C (49°F) and lows dropping to around -35°C (-30°F).
JanFebMarAprMayJunJulAugSepOctNovDec9923334758666355432716
Data source: Temperature data for Thunder Bay generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

February Precipitation in Thunder Bay

In Thunder Bay in February, the total precipitation amount is 35 mm (1.4 in) spread over a period of 6 days.

February Precipitation Trends in Thunder Bay

The chart displays monthly precipitation patterns in Thunder Bay, with values for each month alongside February’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how February’s conditions compare to those of other months. In Thunder Bay, February typically receives around 35 mm (1.4 inches) of precipitation spread over approximately 6 days.
JanFebMarAprMayJunJulAugSepOctNovDec303531585258827798875255
Data source: Precipitation data for February generated using information from the Copernicus Climate Change Service.
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February Humidity in Thunder Bay

In Thunder Bay in February humidity is 94%. With an average temperature of -13°C (9°F), this humidity feels like a heavy blanket enveloping you, making each breath feel sharp and biting, while every step crunches underfoot as you navigate through the cold, damp air.

February Average Humidity in Thunder Bay

This chart illustrates the average monthly humidity levels in Thunder Bay, with February’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In February, average humidity in Thunder Bay is approximately 94%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec95%94%92%90%79%71%70%72%76%82%87%94%
Data source: Humidity data for February generated using information from the Copernicus Climate Change Service.

February UV Index in Thunder Bay

In Thunder Bay in February, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in Thunder Bay, you can check the information here.

Maximum UV Index Levels in Thunder Bay for February

The chart shows the monthly maximum UV Index (UVI) for Thunder Bay in February, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In February, the maximum UV index in Thunder Bay typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235789887421
Data source: Thunder Bay February UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How February Weather in Thunder Bay Compares to Other Months

Weather in Thunder Bay varies notably across the year, with each month offering distinct climate conditions. This page compares February’s weather to other months in Thunder Bay, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Thunder Bay, showing how February’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-13°C (9°F)30 mm (1.2 inches)95%low
February Weather-13°C (9°F)35 mm (1.4 inches)94%moderate
March Weather-5°C (23°F)31 mm (1.2 inches)92%moderate
April Weather1°C (33°F)58 mm (2.3 inches)90%high
May Weather8°C (47°F)52 mm (2.0 inches)78%very high
June Weather14°C (58°F)58 mm (2.3 inches)71%very high
July Weather19°C (66°F)82 mm (3.2 inches)70%very high
August Weather17°C (63°F)77 mm (3.0 inches)72%very high
September Weather13°C (55°F)98 mm (3.9 inches)76%high
October Weather6°C (43°F)87 mm (3.4 inches)82%moderate
November Weather-3°C (27°F)51 mm (2.0 inches)87%low
December Weather-9°C (16°F)55 mm (2.2 inches)94%low

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