Average data for 10 years
1 May
Thursday
+13°
+7°
2 May
Friday
+12°
+8°
3 May
Saturday
+12°
+8°
4 May
Sunday
+12°
+8°
5 May
Monday
+13°
+7°
6 May
Tuesday
+13°
+8°
7 May
Wednesday
+13°
+8°
8 May
Thursday
+13°
+8°
9 May
Friday
+14°
+8°
10 May
Saturday
+14°
+9°
11 May
Sunday
+14°
+9°
12 May
Monday
+13°
+8°
13 May
Tuesday
+14°
+8°
14 May
Wednesday
+14°
+9°
15 May
Thursday
+15°
+10°
16 May
Friday
+14°
+10°
17 May
Saturday
+14°
+9°
18 May
Sunday
+15°
+10°
19 May
Monday
+16°
+10°
20 May
Tuesday
+16°
+11°
21 May
Wednesday
+16°
+11°
22 May
Thursday
+16°
+11°
23 May
Friday
+17°
+11°
24 May
Saturday
+17°
+12°
25 May
Sunday
+17°
+12°
26 May
Monday
+18°
+12°
27 May
Tuesday
+18°
+12°
28 May
Wednesday
+18°
+13°
29 May
Thursday
+18°
+13°
30 May
Friday
+19°
+13°
31 May
Saturday
+19°
+14°
Cities near you
Canada
Toronto
United States
Detroit
United States
Pittsburgh
United States
Cleveland
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Macedonia
Cities with similar weather in May
Montenegro
Podgorica
Canada
Vancouver
United States
Chicago
Italy
Genoa
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Boston
In May, the weather in St Catharines is typically warm. Average daily high temperature in May is about 15 degrees above zero. On average, St Catharines has 12 rainy, 9 sunny, 9 partly cloudy, and 1 cloudy day in May. The rains are usually heavy.