Average data for 10 years
1 April
Monday
+3°
0°
2 April
Tuesday
+1°
0°
3 April
Wednesday
+2°
−1°
4 April
Thursday
+2°
−2°
5 April
Friday
+2°
0°
6 April
Saturday
+2°
0°
7 April
Sunday
+3°
0°
8 April
Monday
+3°
+1°
9 April
Tuesday
+2°
+1°
10 April
Wednesday
+4°
0°
11 April
Thursday
+4°
+1°
12 April
Friday
+4°
+1°
13 April
Saturday
+4°
0°
14 April
Sunday
+5°
+2°
15 April
Monday
+5°
+3°
16 April
Tuesday
+4°
+2°
17 April
Wednesday
+4°
+1°
18 April
Thursday
+3°
+2°
19 April
Friday
+5°
+1°
20 April
Saturday
+5°
+2°
21 April
Sunday
+5°
+2°
22 April
Monday
+6°
+2°
23 April
Tuesday
+6°
+3°
24 April
Wednesday
+7°
+3°
25 April
Thursday
+5°
+3°
26 April
Friday
+4°
+1°
27 April
Saturday
+6°
+1°
28 April
Sunday
+6°
+2°
29 April
Monday
+7°
+3°
30 April
Tuesday
+6°
+4°
Cities near you
United States
Ashland
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Hayward
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Cloquet
United States
Spooner
Cities with similar weather in April
Finland
Helsinki
Latvia
Riga
Estonia
Tallinn
Sweden
Stockholm
Kyrgyzstan
Cholpon-Ata
In April, the weather in Thunder Bay is typically cold. Average daily high temperature in April is about 4 degrees above zero. On average, Thunder Bay has 10 rainy, 10 cloudy, 5 sunny, and 5 partly cloudy days in April. The rains are usually heavy. April as well as January, February, May, and October is considered the most uncomfortable time to visit Thunder Bay.