Weather in April 2025

Thunder Bay weather in April 2025

°C °F

The average weather in Thunder Bay in April

The weather in Thunder Bay in April is very cold with temperatures between -2°C and 4°C, warm clothes are a must.

You can expect about 3 to 8 days of rain in Thunder Bay during the month of April. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.

Thunder Bay is going to experience quite a number of days of snow during April. It’s the perfect time to build snowmen, drink hot cocoa, and have a snowball fight. Just remember to wear a warm scarf and a pair of mittens!

Our weather forecast can give you a great sense of what weather to expect in Thunder Bay in April 2025.

If you’re planning to visit Thunder Bay in the near future, we highly recommend that you review the 14 day weather forecast for Thunder Bay before you arrive.

Temperatures
4° / -2°
Rainy Days
7
Snowy Days
12
Dry Days
12
Rainfall
100
mm
Sun Hours
7.4
Hrs

Explore the weather in Thunder Bay in other months

Thunder Bay annual weather

Month Temperatures Rainy Days Dry Days Snowy Days Rainfall Weather More details
January -10° / -16° 5 4 23 51 mm
Awful
February -9° / -16° 4 5 20 51 mm
Awful
March -2° / -8° 9 5 19 75 mm
Awful
April 4° / -2° 7 12 12 100 mm
Awful
May 12° / 4° 7 23 2 96 mm
Awful
June 17° / 9° 6 24 0 98 mm
Good
July 21° / 13° 5 26 0 90 mm
Good
August 21° / 13° 4 27 0 87 mm
Good
September 16° / 9° 5 25 0 84 mm
Good
October 8° / 3° 6 20 5 74 mm
Bad
November 1° / -4° 6 10 14 78 mm
Awful
December -6° / -11° 5 6 21 69 mm
Awful

Weather in Thunder Bay in April - FAQ

What is the average temperature in Thunder Bay in April?
The average temperature in Thunder Bay in April is -2/4° C.
What is the chance of rain in Thunder Bay in April?
On average, there are 7 rainy days in Thunder Bay during April.
Weather wise, is April a good time to visit Thunder Bay?
The weather in Thunder Bay in April is awful.
Can it snow in Thunder Bay in April?
On average, there are 12 snowy days in Thunder Bay in April.
More about the weather in Thunder Bay