Thunder Bay
April
Weather in Thunder Bay for April 2025
Your guide to Thunder Bay weather in April - trends and predictions
Winter Storm Warning - See hour by hour.
The climate of Thunder Bay in April is quite snowy, averaging 13 snowy days.
According to Thunder Bay snow forecast for April 2025, 9 snowy days are expected in the next 2 weeks. The closest date with snow is Wednesday, 2 April.The forecast for the next days in Thunder Bay predicts temperatures to be around 2 °C, close to the historical average.
In general, the average temperature in Thunder Bay at the beginning of April is 0.4 °C. As the month progressed, temperatures tended to significantly warm up, reaching an average of 3.9 °C by the end of April.
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Temperatures
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11
Dry days
6
Rainy days
13
Snow days
4°/-2°
Temperatures
21 km/h
Avg max wind
84 %
Avg humidity
Thunder Bay Weather April
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| Sun. | Mon. | Tue. | Wed. | Thu. | Fri. | Sat. |
|---|---|---|---|---|---|---|
| 1   -1° | 2  -0° | 3 4° | 4  6° | 5  2° | ||
| 6  -2° | 7  -6° | 8 -3° | 9  -1° | 10 1° | 11 2° | 12  8° |
| 13 4° | 14  15° | 15 9° | 16 3° | 17 3° | 18 5° | 19  2° |
| 20 4° | 21 3° | 22 5° | 23 4° | 24 1° | 25 5° | 26 5° |
| 27 6° | 28 4° | 29 2° | 30 4° |
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Temperatures trend during April in Thunder Bay
See the weather trend as well as the moving average line
April weather day by day
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| Date | Weather | Temperatures | Rain | Snow | More |
|---|---|---|---|---|---|
| 1 Apr. | Partly cloudy | -1° /-8° | 0 mm | 0 cm | |
| 2 Apr. | Moderate or heavy snow showers | 0° /-2° | 33 mm | 2.1 cm | |
| 3 Apr. | Moderate or heavy snow showers | 4° /-3° | 24.3 mm | 7.8 cm | |
| 4 Apr. | Cloudy | 6° /-2° | 0 mm | 0 cm | |
| 5 Apr. | Light snow | 2° /-3° | 0.9 mm | 0.6 cm | |
| 6 Apr. | Light freezing rain | -2° /-6° | 0.4 mm | 0.3 cm | |
| 7 Apr. | Light snow showers | -6° /-9° | 0.2 mm | 0.1 cm | |
| 8 Apr. | Cloudy | -3° /-12° | 0.1 mm | 0 cm | |
| 9 Apr. | Moderate snow | -1° /-6° | 0.6 mm | 0.5 cm | |
| 10 Apr. | Moderate snow | 1° /-2° | 0.5 mm | 0.4 cm | |
| 11 Apr. | Light snow | 2° /-2° | 0.2 mm | 0.1 cm | |
| 12 Apr. | Sunny | 8° /-2° | 0 mm | 0 cm | |
| 13 Apr. | Partly cloudy | 4° /0° | 0 mm | 0 cm | |
| 14 Apr. | Patchy rain possible | 15° /1° | 0.6 mm | 0 cm | |
| 15 Apr. | Patchy rain possible | 9° /2° | 6.2 mm | 0 cm | |
| 16 Apr. | Moderate or heavy snow showers | 3° /-1° | 7.8 mm | 6.3 cm | |
| 17 Apr. | Moderate or heavy snow showers | 3° /-3° | 23.2 mm | 13.2 cm | |
| 18 Apr. | Light freezing rain | 5° /-2° | 3 mm | 0 cm | |
| 19 Apr. | Overcast | 2° /-2° | 0.3 mm | 0 cm | |
| 20 Apr. | Moderate or heavy snow showers | 4° /-1° | 12.1 mm | 9.8 cm | |
| 21 Apr. | Patchy moderate snow | 3° /0° | 7.1 mm | 2.5 cm | |
| 22 Apr. | Light freezing rain | 5° /-1° | 2.6 mm | 0.6 cm | |
| 23 Apr. | Overcast | 4° /-4° | 3.7 mm | 1.7 cm | |
| 24 Apr. | Overcast | 1° /-6° | 0 mm | 0 cm | |
| 25 Apr. | Overcast | 5° /-2° | 0 mm | 0 cm | |
| 26 Apr. | Overcast | 5° /-1° | 2.1 mm | 0 cm | |
| 27 Apr. | Moderate or heavy snow showers | 6° /0° | 17.4 mm | 7.1 cm | |
| 28 Apr. | Patchy rain possible | 4° /-1° | 6.3 mm | 0 cm | |
| 29 Apr. | Moderate or heavy snow showers | 2° /0° | 23.1 mm | 10.3 cm | |
| 30 Apr. | Moderate or heavy snow showers | 4° /0° | 7.9 mm | 1.7 cm | |
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Important Notice
Our weather forecast for Thunder Bay in April 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.
Thunder Bay in April - FAQ
What are the expected maximum and minimum temperatures in Thunder Bay during April?
Brace for cold days with temperatures not exceeding 4° 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 April?
Significant rainfall exceeding 150.4 mm is expected in Thunder Bay during April, occurring over more than 6 days. Preparing for wet conditions is recommended in your planning.
Will it snow in Thunder Bay in April 2025?
Thunder Bay experiences an average snowfall of 67.325 cm during April, occurring over 13 days.
What are the typical wind conditions in Thunder Bay during April?
The average wind speed in Thunder Bay during April is 21 km/h, suggesting breezy to windy conditions, depending on your activities.
Thunder Bay snow forecast April 2025
Track daily snowfall levels and discover Thunder Bay’s snowy potential this April ❄️
April rainfall patterns in Thunder Bay
Explore the daily rainfall trends and prepare for Thunder Bays April weather 💧
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