Climate averages 1991–2020
Thunder Bay weather
in February.
A freezing month with light precipitation: the 11th warmest and the driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
February is a freezing month in Thunder Bay: daytime highs average -8.0°C and nights cool to about -15.0°C. By daytime temperature it is the 11th warmest of the 12 months.
Expect about 22 mm of precipitation on roughly 5 days, which makes February a month with light precipitation (the driest month of the year). Daylight, from sunrise to sunset, lasts about 10 h 10 min on an average February day.
The nearest other city in this atlas is Duluth (278 km away). In February its highs average -5.2°C, 2.7°C warmer than Thunder Bay, with 28 mm of precipitation.
Among the 86 cities listed in Canada, Thunder Bay ranks 85th of 86 for the warmest February highs and 11th of 86 for the driest February (precipitation, lowest first). The mean February high of those 86 cities is -0.9°C; Thunder Bay is 7.1°C cooler than that mean.
From February to March, average highs rise by 6.3°C to -1.7°C, and monthly precipitation rises from 22 mm to 31 mm.
The annual picture
February in context
Monthly precipitation
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Thunder Bay climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | -9.6°C-16.6°C | -16.6°C | 29 | 6.5 | 8.89 h |
| February, selected | -8.0°C-15.0°C | -15.0°C | 22 | 4.9 | 10.210 h |
| March | -1.7°C-8.7°C | -8.7°C | 31 | 6.8 | 11.912 h |
| April | 5.1°C-2.2°C | -2.2°C | 54 | 8.3 | 13.614 h |
| May | 12.5°C4.2°C | 4.2°C | 66 | 10.1 | 15.215 h |
| June | 18.3°C10.7°C | 10.7°C | 65 | 10.5 | 16.016 h |
| July | 22.3°C15.3°C | 15.3°C | 76 | 10.6 | 15.716 h |
| August | 22.3°C15.6°C | 15.6°C | 67 | 9.1 | 14.314 h |
| September | 17.8°C11.7°C | 11.7°C | 84 | 10.5 | 12.613 h |
| October | 9.9°C4.8°C | 4.8°C | 72 | 10.4 | 10.911 h |
| November | 2.3°C-2.8°C | -2.8°C | 49 | 7.8 | 9.39 h |
| December | -4.8°C-11.3°C | -11.3°C | 38 | 7.4 | 8.48 h |
Precipitation (rain or snow, as water) is the average of the 30 separate monthly totals. A wet day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
February in nearby cities
- Duluth in FebruaryUnited States · 278 kmHigh -5.2°C · Low -12.0°C · 28 mm precipitation
- Sault Ste. Marie in FebruaryCanada · 424 kmHigh -6.0°C · Low -12.6°C · 36 mm precipitation
- Green Bay in FebruaryUnited States · 440 kmHigh -2.3°C · Low -10.8°C · 33 mm precipitation
- Appleton in FebruaryUnited States · 463 kmHigh -2.6°C · Low -11.1°C · 34 mm precipitation
- Brooklyn Park in FebruaryUnited States · 481 kmHigh -2.4°C · Low -11.5°C · 26 mm precipitation
- Saint Paul in FebruaryUnited States · 482 kmHigh -2.1°C · Low -11.2°C · 27 mm precipitation
- Minneapolis in FebruaryUnited States · 487 kmHigh -2.3°C · Low -11.4°C · 26 mm precipitation
- Plymouth, United States in FebruaryUnited States · 493 kmHigh -2.6°C · Low -11.3°C · 26 mm precipitation
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Thunder Bay) is explained once on the Thunder Bay year overview and on the Sources, method and limits page.