The highest day temperature in February 2026 was 38°F. The lowest night temperature was -21°F. The average values for day and night temperatures during February were 15.9°F и 4.9°F respectivly.

The average sea surface temperature in February 2026 for Thunder Bay was 30.9°F. The maximum and minimum values were 30.8°F and 31.0°F respectively.

Most of the days in February are gloomy but you can also expect sunny days.

Precipitation total in February for Thunder Bay is 0.3 in. It makes february one of the least rainy months of the year.

The average wind speed in February is 8.4 mph. It makes February one of the most windy months of the year for Thunder Bay.

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Thunder Bay in February is 4.0 hours.