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7 Days
14 Days
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Monthly Historical Averages
St. Catharines, ON
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March
Average Temperature
High
6°
Feels 3
Low
-2°
Feels -6
Average Precipitation
11 Days
Rain amount
68mm
Snow amount
12.2cm
Daily Historical Averages
March 2026
S
M
T
W
T
F
S
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
-4°
18
0°
19
5°
20
6°
21
8°
22
3°
23
0°
24
3°
25
6°
26
9°
27
2°
28
1°
29
4°
30
4°
31
6°
Forecast
Tuesday, March 17, 2026
Day
-4°
Feels -12
Wind
48 km/h W
Gust
72 km/h
Humidity
46%
P.O.P
40%
Snow
~1 cm
Night
-8°
Feels -14
Wind
34 km/h W
Gust
51 km/h
Humidity
73%
P.O.P
40%
Snow
<1 cm
Historical Averages
Mar 17
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.