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Weather in Thunder Bay for March 2026

Your guide to Thunder Bay weather in March - trends and predictions

    Snow Forecast ❄️

  • Expect heavy snowfall in Thunder Bay during March, with an average of 19 snowy days.
    According to Thunder Bay snow forecast for March 2026, 8 snowy days are expected until the end of the month. The closest date with snow is Wednesday, 18 March.

    • Temperatures

  • Until now, March 2026 in Thunder Bay is slightly cooler than the historical average by -1 °C.

  • Expect cooler weather in the next days in Thunder Bay with the forecast suggesting a temperature of -1.9 °C, lower than the historical average.

  • In general, the average temperature in Thunder Bay at the beginning of March is -0.4 °C. As the month progressed, temperatures tended to slightly increase, reaching an average of -0.3 °C by the end of March.

    • More

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Average dry days
12
Dry days
Average rainy days
0
Rainy days
Average snowy days
19
Snow days
Average temperatures
0°/-8°
Temperatures
Average wind speed
18 km/h
Avg max wind
Average humidity
76 %
Avg humidity

Thunder Bay Weather March

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

Temperatures trend during March in Thunder Bay

See the weather trend as well as the moving average line

March weather in Thunder Bay day by day

Click on a date for more information
February April
Date Weather Temperatures Rain Snow More
1 Mar. Sunny
Sunny
 -5° /-16° 0 mm 0 cm
2 Mar. Freezing fog
Freezing fog
 -3° /-14° 0.2 mm 0 cm
3 Mar. Light snow showers
Light snow showers
 3° /-9° 0.6 mm 0 cm
4 Mar. Moderate or heavy snow showers
Moderate or heavy snow showers
 2° /-4° 1.4 mm 0.6 cm
5 Mar. Overcast
Overcast
 -1° /-9° 0.4 mm 0.3 cm
6 Mar. Light snow showers
Light snow showers
 1° /-9° 0.5 mm 0 cm
7 Mar. Freezing fog
Freezing fog
 0° /-6° 13.2 mm 5.9 cm
8 Mar. Overcast
Overcast
 2° /-6° 1.2 mm 0 cm
9 Mar. Overcast
Overcast
 3° /-5° 1.9 mm 0 cm
10 Mar. Overcast
Overcast
 0° /-7° 0.1 mm 0 cm
11 Mar. Overcast
Overcast
 1° /-8° 1.1 mm 0.8 cm
12 Mar. Overcast
Overcast
 2° /-6° 4.1 mm 3 cm
13 Mar. Cloudy
Cloudy
 1° /-6° 11.9 mm 0 cm
14 Mar. Freezing fog
Freezing fog
 0° /-9° 0 mm 0 cm
15 Mar. Partly cloudy
Partly cloudy
 -1° /-13° 0.1 mm 0 cm
16 Mar. Overcast
Overcast
 -9° /-16° 0 mm 0 cm
17 Mar. Partly cloudy
Partly cloudy
 -7° /-18° 0 mm 0 cm
18 Mar. Light snow
Light snow
 -4° /-11° 0.7 mm 0.5 cm
19 Mar. Moderate snow
Moderate snow
 1° /-11° 0.7 mm 0.5 cm
20 Mar. Moderate or heavy snow showers
Moderate or heavy snow showers
 0° /-6° 2 mm 1.3 cm
21 Mar. Moderate snow
Moderate snow
 -1° /-2° 1.2 mm 0.8 cm
22 Mar. Freezing fog
Freezing fog
 0° /-8° 0.2 mm 0.1 cm
23 Mar. Heavy snow
Heavy snow
 -1° /-3° 5.6 mm 4.1 cm
24 Mar. Light freezing rain
Light freezing rain
 -3° /-8° 0.1 mm 0 cm
25 Mar. Cloudy
Cloudy
 -5° /-14° 0 mm 0 cm
26 Mar. Sunny
Sunny
 -1° /-17° 0 mm 0 cm
27 Mar. Mist
Mist
 2° /-13° 0 mm 0 cm
28 Mar. Overcast
Overcast
 2° /-8° 0 mm 0 cm
29 Mar. Light snow
Light snow
 0° /-9° 8.9 mm 1.4 cm
30 Mar. Overcast
Overcast
 0° /-6° 1.9 mm 1.6 cm
31 Mar. Light snow showers
Light snow showers
 0° /-4° 3.8 mm 3.2 cm
Next
Important Notice
Our weather forecast for Thunder Bay in March 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 Thunder Bay forecast closer to your planned date for the most up-to-date weather information.
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Thunder Bay in March - FAQ

What are the expected maximum and minimum temperatures in Thunder Bay during March?

Brace for cold days with temperatures not exceeding 0° and nights that are likely to be freezing. Winter clothing is essential for comfort and safety.

How much rainfall should be expected in Thunder Bay during March?

Significant rainfall exceeding 124.7 mm is expected in Thunder Bay during March, occurring over more than 0 days. Preparing for wet conditions is recommended in your planning.

Will it snow in Thunder Bay in March 2026?

Thunder Bay experiences an average snowfall of 56.5 cm during March, occurring over 19 days.

What are the typical wind conditions in Thunder Bay during March?

The average wind speed in Thunder Bay during March is 18 km/h, suggesting breezy to windy conditions, depending on your activities.

Thunder Bay snow forecast March 2026

Track daily snowfall levels and discover Thunder Bay’s snowy potential this March ❄️
On average, Thunder Bay sees 19 snowy days during March, with approximately 56.5 cm of total snowfall.

March rainfall patterns in Thunder Bay

Explore the daily rainfall trends and prepare for Thunder Bays March weather 💧

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Location coordinates Where is Thunder Bay?

Get accurate weather forecasts for Thunder Bay, located at latitude 48.382 and longitude -89.25. Stay updated with localized weather information tailored for Thunder Bay.

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