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Weather in Sarnia for January 2026

Your guide to Sarnia weather in January - trends and predictions

    Snow Forecast ❄️

  • Expect heavy snowfall in Sarnia during January, with an average of 16 snowy days.
    According to Sarnia snow forecast for January 2026, 1 snowy day is expected until the end of the month at Saturday, 31 January.

    • Temperatures

  • Until now, January 2026 in Sarnia is slightly cooler than the historical average by -1.6 °C.

  • The forecast for the coming days of January 2026 predicts a temperature of -7.2 °C , which is warmer than usual.

  • In general, the average temperature in Sarnia at the beginning of January is -0.3 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of -6 °C by the end of January.

    • More

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
8
Dry days
Average rainy days
7
Rainy days
Average snowy days
16
Snow days
Average temperatures
-1°/-5°
Temperatures
Average wind speed
27 km/h
Avg max wind
Average humidity
81 %
Avg humidity

Sarnia Weather January

Move between months or click on a day
December
February
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Light snow showers
-1°
2
Cloudy
0°
3
Light snow showers
0°
4
Patchy light snow
-1°
5
Partly cloudy
-1°
6
Light snow
1°
7
Moderate snow
0°
8
Overcast
0°
9
Heavy snow
4°
10
Heavy snow
1°
11
Overcast
2°
12
Patchy rain possible
2°
13
Overcast
2°
14
Overcast
-2°
15
Cloudy
-5°
16
Overcast
-3°
17
Patchy rain possible
0°
18
Overcast
0°
19
Moderate or heavy rain shower
-3°
20
Overcast
-5°
21
Overcast
-4°
22
Overcast
-3°
23
Overcast
-2°
24
Overcast
-3°
25
Moderate snow
-2°
26
Light freezing rain
-2°
27
Light freezing rain
-1°
28
Light freezing rain
-9°
29
Sunny
-9°
30
Sunny
-10°
31
Patchy moderate snow
-9°

Temperatures trend during January in Sarnia

See the weather trend as well as the moving average line

January weather in Sarnia day by day

Click on a date for more information
December February
Date Weather Temperatures Rain Snow More
1 Jan. Light snow showers
Light snow showers
 -1° /-4° 6 mm 0.2 cm
2 Jan. Cloudy
Cloudy
 0° /-4° 0 mm 0 cm
3 Jan. Light snow showers
Light snow showers
 0° /-5° 0.1 mm 0.1 cm
4 Jan. Patchy light snow
Patchy light snow
 -1° /-5° 0 mm 0 cm
5 Jan. Partly cloudy
Partly cloudy
 -1° /-5° 2.4 mm 1.7 cm
6 Jan. Light snow
Light snow
 1° /-2° 0.4 mm 0.1 cm
7 Jan. Moderate snow
Moderate snow
 0° /-3° 1.7 mm 0.2 cm
8 Jan. Overcast
Overcast
 0° /-3° 0.1 mm 0 cm
9 Jan. Heavy snow
Heavy snow
 4° /-3° 10.1 mm 0.9 cm
10 Jan. Heavy snow
Heavy snow
 1° /-2° 1.1 mm 0.5 cm
11 Jan. Overcast
Overcast
 2° /-2° 0.9 mm 0.7 cm
12 Jan. Patchy rain possible
Patchy rain possible
 2° /-2° 4.5 mm 0 cm
13 Jan. Overcast
Overcast
 2° /-4° 2.2 mm 0 cm
14 Jan. Overcast
Overcast
 -2° /-8° 0.5 mm 0 cm
15 Jan. Cloudy
Cloudy
 -5° /-9° 0 mm 0 cm
16 Jan. Overcast
Overcast
 -3° /-9° 0.5 mm 0.1 cm
17 Jan. Patchy rain possible
Patchy rain possible
 0° /-7° 1.5 mm 0 cm
18 Jan. Overcast
Overcast
 0° /-5° 6.1 mm 4.4 cm
19 Jan. Moderate or heavy rain shower
Moderate or heavy rain shower
 -3° /-8° 4.3 mm 0.8 cm
20 Jan. Overcast
Overcast
 -5° /-11° 0.9 mm 0 cm
21 Jan. Overcast
Overcast
 -4° /-10° 2.1 mm 0.6 cm
22 Jan. Overcast
Overcast
 -3° /-9° 1 mm 0.2 cm
23 Jan. Overcast
Overcast
 -2° /-8° 4.1 mm 0.5 cm
24 Jan. Overcast
Overcast
 -3° /-8° 1.8 mm 0 cm
25 Jan. Moderate snow
Moderate snow
 -2° /-7° 10.5 mm 3.1 cm
26 Jan. Light freezing rain
Light freezing rain
 -2° /-6° 4 mm 0 cm
27 Jan. Light freezing rain
Light freezing rain
 -1° /-7° 0.6 mm 0.1 cm
28 Jan. Light freezing rain
Light freezing rain
 -9° /-19° 0.4 mm 0 cm
29 Jan. Sunny
Sunny
 -9° /-19° 0 mm 0 cm
30 Jan. Sunny
Sunny
 -10° /-21° 0 mm 0 cm
31 Jan. Patchy moderate snow
Patchy moderate snow
 -9° /-18° 0.7 mm 0.5 cm
Next
Important Notice
Our weather forecast for Sarnia in January is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Sarnia forecast closer to your planned date for the most up-to-date weather information.
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Sarnia in January - FAQ

What are the expected maximum and minimum temperatures in Sarnia during January?

Brace for cold days with temperatures not exceeding -1° and nights that are likely to be freezing. Winter clothing is essential for comfort and safety.

How much rainfall should be expected in Sarnia during January?

Moderate rainfall is anticipated in Sarnia during January, with a total of 81.7 mm spread over approximately 7 days. Considering plans for rainy days is advisable.

Will it snow in Sarnia in January 2026?

Sarnia experiences an average snowfall of 14.7967 cm during January, occurring over 16 days.

What are the typical wind conditions in Sarnia during January?

The average wind speed in Sarnia during January is 27 km/h, suggesting breezy to windy conditions, depending on your activities.

Sarnia snow forecast January 2026

Track daily snowfall levels and discover Sarnia’s snowy potential this January ❄️
On average, Sarnia sees 16 snowy days during January, with approximately 14.8 cm of total snowfall.

January rainfall patterns in Sarnia

Explore the daily rainfall trends and prepare for Sarnias January weather 💧
Typically, Sarnia has 7 rainy days in January with a total of 81.7 mm of rainfall.

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Get accurate weather forecasts for Sarnia, located at latitude 42.979 and longitude -82.404. Stay updated with localized weather information tailored for Sarnia.

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