Average data for 10 years
1 May
Wednesday
+14°
+11°
2 May
Thursday
+15°
+10°
3 May
Friday
+15°
+11°
4 May
Saturday
+15°
+11°
5 May
Sunday
+15°
+10°
6 May
Monday
+16°
+10°
7 May
Tuesday
+17°
+11°
8 May
Wednesday
+16°
+12°
9 May
Thursday
+14°
+10°
10 May
Friday
+15°
+10°
11 May
Saturday
+15°
+11°
12 May
Sunday
+16°
+11°
13 May
Monday
+16°
+12°
14 May
Tuesday
+16°
+12°
15 May
Wednesday
+15°
+11°
16 May
Thursday
+15°
+10°
17 May
Friday
+16°
+12°
18 May
Saturday
+16°
+12°
19 May
Sunday
+18°
+12°
20 May
Monday
+20°
+14°
21 May
Tuesday
+18°
+16°
22 May
Wednesday
+18°
+13°
23 May
Thursday
+19°
+13°
24 May
Friday
+19°
+14°
25 May
Saturday
+20°
+15°
26 May
Sunday
+21°
+16°
27 May
Monday
+20°
+16°
28 May
Tuesday
+21°
+16°
29 May
Wednesday
+22°
+17°
30 May
Thursday
+20°
+17°
31 May
Friday
+20°
+15°
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In May, the weather in Welland is typically warm. Average daily high temperature in May is about 17 degrees above zero. On average, Welland has 12 rainy, 8 sunny, 8 partly cloudy, and 3 cloudy days in May. The rains are usually heavy.