Weather in Thunder Bay in February

The month to avoid. February is the month most people should skip in Thunder Bay. Highs sit at -7.4 °C and the day is short; this is an indoors-with-excursions month, not an outdoors-all-day one.

February ranks 8 of 12 in Thunder Bay: past the worst of the year but short of August, which is the month to book if the dates are open.

Rain falls on only 6 days, so an itinerary with no wet-weather fallback is a reasonable risk. Layers, and a genuinely waterproof outer — at -7.4 °C the difference between a good day and a miserable one is entirely down to what you are wearing.

What the averages hide

Averages flatten a month, and this one hides a few things: 28 nights drop below freezing, so anything left outside stays frozen. Across the twenty years measured, the hottest February day reached 7.3 °C and the coldest night fell to -34.4 °C.

February is moderately variable: 7 mm in the driest year against 49 mm in the wettest, around an average of 20 mm. Roughly two Februarys in three land near that average, and the third does something else entirely.

Wind is light at 5.2 km/h, so the temperature on the page is close to the temperature on your skin, and humidity runs at 96%, which at -7.4 °C means damp rather than muggy — the kind of cold that gets into a coat and stays there.

How February sits in the year

Temperatures hold steady either side: -8.5 °C in January, -7.4 here, 0.6 in March. Nothing about the timing within the month matters much.

Daylight in February

10.2 hours of daylight, gaining 1.6 hours across the month. That is between Thunder Bay's extremes of 16.1 and 8.4 hours, so days are long enough not to constrain the plan.

An inland climate

Thunder Bay has no sea to moderate it, and it shows: 42 °C separates the hottest afternoon of the year from the coldest night. That is a genuinely continental range, and it means summer and winter here are barely the same place.

How busy it gets

Off season. The genuine off season: cheapest by a distance, with the caveat that some tours and restaurants close entirely.

Crowd levels are estimated from climate desirability and school-holiday calendars, not from visitor numbers.

February in Thunder Bay versus nearby

If Thunder Bay is one option among several, the nearby comparison is worth making. Minneapolis is close enough to be a coin toss — 4 °C warmer, 1 day less rain. Milwaukee is close enough to be a coin toss — 6.7 °C warmer, 1 day more rain.

So: February is a compromise. August is 51 points better and is what Thunder Bay is actually like at its best — worth moving the trip for if that is possible, and worth adjusting expectations for if it is not.

Every month in Thunder Bay

See all twelve months in Thunder Bay, or where else to go in February.