St Catharines Weather Conditions
Current Temperature Level
12 °C
26 AQI
Air quality index is: Good
Last Updated: 2026-03-09 23:00 (Local Time)
MapSt Catharines
St Catharines Weather Parameters
23 km/h
13.4 m/s
220° SW
0 %
10 km
0 mm
1012 mb
UV Index0
Suggestions for
TuesdaySt Catharines10 Mar.
Hydration• Stay Hydrated
Clothing• More Layered
Driving• Enjoy Driving
Sunscreen• ApplySt Catharines 10-Days Weather Forecast
Today
10°C
81 %Wednesday
7°C96 %Thursday
2°C71 %Friday
1°C71 %Saturday
0°C73 %Sunday
3°C93 %Monday
-4°C84 %Tuesday
-8°C72 %Wednesday
-7°C72 %Thursday
-1°C78 %Patchy rain nearby
Occasional light rain is expected and humidity will be 81%, with winds at 30.6 km/h.15°C / 4°C
Humi.81 %
Prec.1.27 mm
Sunrise
07:38 AM11hrs 39min
Sunset
07:17 PMTime
Condition
Temp
Humidity
UV
Wind Speed & Dir.
12 AM
Clear
11 °C
42 %
0
24.5 kmph / SW
Clear 
Feels 10 °C
Cover 0 %
Visibility 10 km
1 AM
Clear
11 °C
47 %
0
22.3 kmph / SW
Clear Feels 9 °C
Cover 0 %
Visibility 10 km
2 AM
Clear
11 °C
50 %
0
20.5 kmph / SSW
Clear Feels 9 °C
Cover 0 %
Visibility 10 km
3 AM
Clear
10 °C
52 %
0
17.6 kmph / SW
Clear Feels 8 °C
Cover 0 %
Visibility 10 km
4 AM
Clear
10 °C
57 %
0
17.3 kmph / SSW
Clear Feels 8 °C
Cover 0 %
Visibility 10 km
5 AM
Clear
9 °C
64 %
0
18 kmph / SSW
Clear Feels 8 °C
Cover 0 %
Visibility 10 km
6 AM
Clear
10 °C
74 %
0
18 kmph / SSW
Clear Feels 8 °C
Cover 21 %
Visibility 10 km
7 AM
Patchy rain nearby
10 °C
81 %
0
17.3 kmph / SSW
Patchy rain nearbyFeels 9 °C
Cover 84 %
Visibility 10 km
8 AM
Patchy rain nearby
11 °C
88 %
0
14.8 kmph / SSW
Patchy rain nearbyFeels 10 °C
Cover 89 %
Visibility 10 km
9 AM
Sunny
13 °C
89 %
0.4
14 kmph / SW
SunnyFeels 11 °C
Cover 21 %
Visibility 10 km
10 AM
Sunny
14 °C
86 %
0.9
14.8 kmph / SW
SunnyFeels 13 °C
Cover 19 %
Visibility 2 km
11 AM
Overcast
14 °C
84 %
0.8
15.1 kmph / SW
Overcast Feels 13 °C
Cover 98 %
Visibility 10 km
12 PM
Patchy rain nearby
13 °C
85 %
0.9
16.2 kmph / WSW
Patchy rain nearbyFeels 13 °C
Cover 78 %
Visibility 10 km
1 PM
Overcast
14 °C
93 %
2.1
15.1 kmph / WSW
Overcast Feels 13 °C
Cover 100 %
Visibility 10 km
2 PM
Overcast
13 °C
88 %
1.8
13.7 kmph / WSW
Overcast Feels 13 °C
Cover 100 %
Visibility 10 km
3 PM
Mist
12 °C
95 %
1
8.6 kmph / WNW
MistFeels 11 °C
Cover 100 %
Visibility 2 km
4 PM
Fog
10 °C
97 %
0.6
12.6 kmph / NNW
FogFeels 10 °C
Cover 100 %
Visibility 10 km
5 PM
Fog
9 °C
98 %
0.2
12.2 kmph / N
FogFeels 9 °C
Cover 100 %
Visibility 10 km
6 PM
Fog
8 °C
98 %
0.1
12.2 kmph / N
FogFeels 7 °C
Cover 100 %
Visibility 10 km
7 PM
Fog
7 °C
97 %
0
12.6 kmph / NNE
FogFeels 5 °C
Cover 100 %
Visibility 10 km
8 PM
Light rain
6 °C
96 %
0
22.3 kmph / NE
Light rainFeels 3 °C
Cover 100 %
Visibility 10 km
9 PM
Overcast
5 °C
97 %
0
27.4 kmph / ENE
Overcast Feels 1 °C
Cover 100 %
Visibility 2 km
10 PM
Overcast
4 °C
97 %
0
30.6 kmph / ENE
Overcast Feels 0 °C
Cover 100 %
Visibility 2 km
11 PM
Overcast
4 °C
97 %
0
27.4 kmph / ENE
Overcast Feels -1 °C
Cover 100 %
Visibility 6 km
Today
10°C81 %Wednesday
7°C96 %Thursday
2°C71 %Friday
1°C71 %Saturday
0°C73 %Sunday
3°C93 %Monday
-4°C84 %Tuesday
-8°C72 %Wednesday
-7°C72 %Thursday
-1°C78 %Temp11 °C
ConditionClear
Humidity42 %
Feels10 °C
Cover0 %
Visibility10 km
Wind Speed & Dir.24.5 kmph / SW
UV0
St Catharines 30-Days (March 2026) Weather Forecast
Sun.
Mon.
Tue.
Wed.
Thu.
Fri.
Sat.
1Sun.
-4°-8°C
2Mon.
1°-11°C
3Tue.
7°-8°C
4Wed.
10°-1°C
5Thu.
7°-1°C
6Fri.
6°-1°C
7Sat.
22°2°C
8Sun.
9°3°C
9Today
21°7°C
10Tue.
14°5°C
11Wed.
17°4°C
12Thu.
2°-1°C
13Fri.
3°-2°C
14Sat.
1°-3°C
15Sun.
3°-2°C
16Mon.
-3°-5°C
17Tue.
-6°-8°C
18Wed.
-4°-7°C
19Thu.
1°-8°C
20Fri.
0°-6°C
21Sat.
0°-6°C
22Sun.
4°-3°C
23Mon.
4°-2°C
25Wed.
7°0°C
26Thu.
6°0°C
27Fri.
6°-1°C
28Sat.
7°0°C
29Sun.
7°0°C
30Mon.
8°0°C
31Tue.
9°2°C
MarchWeather Overview
No. of days:
Sunny
2
Cloudy
3
Rainy
20
Snowy
4
The monthly weather averages in St Catharines consist of 2 sunny days, 3 cloudy days, 20 rainy days, and 4 snowy days.
St Catharines's Locations Weather Conditions
Canada's Hottest Cities - March 2026
1.
Chatham, Ontario
Clear
51%
0
14.8 kmph / SSW
2.
Saint Jean sur Richelieu, Quebec
Clear
31%
0
18 kmph / SSW
3.
Sarnia, Ontario
Clear
59%
0
14.4 kmph / SSW
4.
St Catharines, Ontario
Clear
41%
0
21.6 kmph / SW
5.
Hamilton, Ontario
Clear
40%
0
18.7 kmph / SW
6.
Milton, Ontario
Clear
40%
0
19.1 kmph / SW
7.
Burlington, Ontario
Clear
40%
0
19.4 kmph / SW
8.
Central Elgin, Ontario
Clear
55%
0
21.6 kmph / SW
9.
London, Ontario
Clear
55%
0
12.6 kmph / SSW
10.
St Thomas, Ontario
Clear
55%
0
21.6 kmph / SW
Last Updated: 10 Mar 2026, 03:17 AM
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