Climate averages 1991–2020
Sarnia weather
in February.
A freezing month with moderate 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 Sarnia: daytime highs average -0.3°C and nights cool to about -8.0°C. By daytime temperature it is the 11th warmest of the 12 months.
Expect about 52 mm of precipitation on roughly 8 days, which makes February a month with moderate precipitation (the driest month of the year). Daylight, from sunrise to sunset, lasts about 10 h 30 min on an average February day.
The nearest other city in this atlas is Clinton Township (61 km away). In February its highs average 0.5°C, 0.8°C warmer than Sarnia, with 52 mm of precipitation.
Among the 86 cities listed in Canada, Sarnia ranks joint 25th of 86 for the warmest February highs and joint 27th of 86 for the driest February (precipitation, lowest first). The mean February high of those 86 cities is -0.9°C; Sarnia is 0.6°C warmer than that mean.
From February to March, average highs rise by 4.8°C to 4.6°C, and monthly precipitation rises from 52 mm to 57 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
Sarnia climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | -1.2°C-7.8°C | -7.8°C | 57 | 9.6 | 9.49 h |
| February, selected | -0.3°C-8.0°C | -8.0°C | 52 | 8.4 | 10.510 h |
| March | 4.6°C-3.7°C | -3.7°C | 57 | 9.6 | 11.912 h |
| April | 11.4°C2.8°C | 2.8°C | 85 | 11.4 | 13.413 h |
| May | 18.3°C9.7°C | 9.7°C | 85 | 12.0 | 14.615 h |
| June | 23.7°C15.9°C | 15.9°C | 87 | 10.7 | 15.315 h |
| July | 26.1°C18.8°C | 18.8°C | 71 | 11.0 | 15.015 h |
| August | 25.2°C18.3°C | 18.3°C | 70 | 10.4 | 13.914 h |
| September | 21.7°C14.7°C | 14.7°C | 73 | 9.1 | 12.513 h |
| October | 14.7°C8.5°C | 8.5°C | 76 | 10.8 | 11.111 h |
| November | 7.7°C2.2°C | 2.2°C | 66 | 9.7 | 9.810 h |
| December | 1.8°C-3.3°C | -3.3°C | 56 | 9.4 | 9.19 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
- Clinton Township in FebruaryUnited States · 61 kmHigh 0.5°C · Low -7.0°C · 52 mm precipitation
- Shelby in FebruaryUnited States · 62 kmHigh 0.6°C · Low -7.7°C · 52 mm precipitation
- Sterling Heights in FebruaryUnited States · 68 kmHigh 0.7°C · Low -7.4°C · 52 mm precipitation
- Rochester Hills in FebruaryUnited States · 70 kmHigh 0.5°C · Low -8.0°C · 53 mm precipitation
- Warren in FebruaryUnited States · 74 kmHigh 0.7°C · Low -7.7°C · 52 mm precipitation
- Troy in FebruaryUnited States · 74 kmHigh 0.6°C · Low -7.7°C · 52 mm precipitation
- Southfield in FebruaryUnited States · 87 kmHigh 0.9°C · Low -7.6°C · 52 mm precipitation
- Waterford in FebruaryUnited States · 88 kmHigh 0.6°C · Low -8.1°C · 52 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 Sarnia) is explained once on the Sarnia year overview and on the Sources, method and limits page.