St Catharines Weather Conditions
Current Temperature Level
16 °C
28 AQI
Air quality index is: Good
Last Updated: 2025-09-29 03:45 (Local Time)
MapSt Catharines
St Catharines Weather Parameters
8 km/h
4 m/s
50° NE
0 %
10 km
0 mm
1012 mb
UV Index0
Suggestions for
TodaySt Catharines29 Sep.
Umbrella• Optional
Clothing• Layering Must
Driving• Enjoy Driving
Sunscreen• ApplyTrending in Canada
Air Quality Monitoring for Logistics: Smarter Deliveries with Data
St Catharines 10-Days Weather Forecast
Today
18°C
68 %Tuesday
17°C70 %Wednesday
13°C71 %Thursday
13°C54 %Friday
15°C57 %Saturday
18°C65 %Sunday
20°C64 %Monday
21°C64 %Tuesday
15°C66 %Wednesday
16°C61 %Sunny
Clear Sky with temperature at 18 °C and humidity will be at 68% with 10.1 km/h winds.26°C / 11°C
Humi.68 %
Prec.0 mm
Sunrise
07:12 AM11hrs 49min
Sunset
07:01 PMTime
Condition
Temp
Humidity
UV
Wind Speed & Dir.
12 AM
Clear
16 °C
72 %
0
7.6 kmph / NE
Clear 
Feels 15.9 °C
Cover 0 %
Visibility 10 km
1 AM
Clear
15 °C
73 %
0
5.4 kmph / NE
Clear Feels 15.6 °C
Cover 0 %
Visibility 10 km
2 AM
Clear
14 °C
76 %
0
6.8 kmph / NE
Clear Feels 14.6 °C
Cover 0 %
Visibility 10 km
3 AM
Clear
16 °C
93 %
0
7.6 kmph / NE
Clear Feels 13.9 °C
Cover 0 %
Visibility 10 km
4 AM
Clear
13 °C
81 %
0
7.9 kmph / NE
Clear Feels 13.4 °C
Cover 2 %
Visibility 10 km
5 AM
Clear
13 °C
82 %
0
6.5 kmph / E
Clear Feels 12.7 °C
Cover 2 %
Visibility 10 km
6 AM
Clear
12 °C
81 %
0
7.6 kmph / SE
Clear Feels 11.9 °C
Cover 1 %
Visibility 10 km
7 AM
Clear
12 °C
77 %
0
5.4 kmph / SE
Clear Feels 11.5 °C
Cover 1 %
Visibility 10 km
8 AM
Sunny
13 °C
84 %
0.1
4.3 kmph / SSE
SunnyFeels 13.2 °C
Cover 3 %
Visibility 10 km
9 AM
Sunny
16 °C
76 %
0.6
3.6 kmph / SE
SunnyFeels 16.3 °C
Cover 0 %
Visibility 10 km
10 AM
Sunny
19 °C
55 %
1.7
2.2 kmph / E
SunnyFeels 19.2 °C
Cover 0 %
Visibility 10 km
11 AM
Sunny
22 °C
49 %
3.1
4.3 kmph / NNE
SunnyFeels 23.1 °C
Cover 0 %
Visibility 10 km
12 PM
Sunny
24 °C
51 %
4.4
5.8 kmph / N
SunnyFeels 24.6 °C
Cover 0 %
Visibility 10 km
1 PM
Sunny
25 °C
50 %
5
9.7 kmph / N
SunnyFeels 25.6 °C
Cover 0 %
Visibility 10 km
2 PM
Sunny
25 °C
49 %
4.8
10.1 kmph / N
SunnyFeels 25.9 °C
Cover 0 %
Visibility 10 km
3 PM
Sunny
25 °C
51 %
3.7
7.9 kmph / N
SunnyFeels 25.9 °C
Cover 2 %
Visibility 10 km
4 PM
Sunny
24 °C
53 %
2.3
6.8 kmph / N
SunnyFeels 25.3 °C
Cover 3 %
Visibility 10 km
5 PM
Sunny
23 °C
55 %
1.1
5 kmph / NNE
SunnyFeels 24.9 °C
Cover 3 %
Visibility 10 km
6 PM
Sunny
21 °C
63 %
0.3
4 kmph / NNE
SunnyFeels 20.6 °C
Cover 3 %
Visibility 10 km
7 PM
Sunny
19 °C
71 %
0
4.3 kmph / ENE
SunnyFeels 18.8 °C
Cover 3 %
Visibility 10 km
8 PM
Clear
17 °C
75 %
0
2.5 kmph / SE
Clear Feels 17.4 °C
Cover 3 %
Visibility 10 km
9 PM
Clear
17 °C
78 %
0
3.2 kmph / ESE
Clear Feels 16.6 °C
Cover 4 %
Visibility 10 km
10 PM
Clear
16 °C
79 %
0
4.3 kmph / SE
Clear Feels 16 °C
Cover 5 %
Visibility 10 km
11 PM
Clear
16 °C
78 %
0
1.8 kmph / ENE
Clear Feels 15.5 °C
Cover 5 %
Visibility 10 km
Today
18°C68 %Tuesday
17°C70 %Wednesday
13°C71 %Thursday
13°C54 %Friday
15°C57 %Saturday
18°C65 %Sunday
20°C64 %Monday
21°C64 %Tuesday
15°C66 %Wednesday
16°C61 %Temp13 °C
ConditionClear
Humidity81 %
Feels13.4 °C
Cover2 %
Visibility10 km
Wind Speed & Dir.7.9 kmph / NE
UV0
St Catharines 30-Days (September 2025) Weather Forecast
Sun.
Mon.
Tue.
Wed.
Thu.
Fri.
Sat.
1Mon.
27°11 °C
2Tue.
28°13 °C
3Wed.
29°13 °C
4Thu.
21°14 °C
5Fri.
27°11 °C
6Sat.
21°11 °C
7Sun.
20°12 °C
8Mon.
19°9 °C
9Tue.
24°8 °C
10Wed.
25°11 °C
11Thu.
24°12 °C
12Fri.
26°12 °C
13Sat.
26°12 °C
14Sun.
24°13 °C
15Mon.
24°12 °C
16Tue.
27°11 °C
17Wed.
24°12 °C
18Thu.
28°13 °C
19Fri.
23°14 °C
20Sat.
23°10 °C
21Sun.
31°12 °C
22Mon.
27°18 °C
23Tue.
28°18 °C
24Wed.
26°16 °C
25Thu.
22°18 °C
26Fri.
27°16 °C
27Sat.
29°14 °C
28Sun.
27°16 °C
29Today
20°9 °C
30Tue.
23°10 °C
SeptemberWeather Overview
No. of days:
Sunny
14
Cloudy
11
Rainy
1
Snowy
0
The monthly weather averages in St Catharines consist of 14 sunny days, 11 cloudy days, 1 rainy days, and 0 snowy days.
St Catharines's Locations Weather Conditions
Canada's Hottest Cities - September 2025
1.
Abbotsford, Canada
Light rain
72%
0
4 kmph / ENE
2.
Maple Ridge, Canada
Light rain
72%
0
7.2 kmph / NNE
3.
Mission, Canada
Light rain
72%
0
4 kmph / ENE
4.
Kenora, Canada
Clear
72%
0
9.4 kmph / SW
5.
Creston, Canada
Clear
44%
0
3.6 kmph / NW
6.
Halifax, Canada
Clear
81%
0
14.4 kmph / NW
7.
Lake Loon, Canada
Clear
81%
0
14.4 kmph / NW
8.
St. Catharines, Canada
Clear
93%
0
7.6 kmph / NE
9.
St Catharines, Canada
Clear
93%
0
7.6 kmph / NE
10.
Vancouver, Canada
Light rain
94%
0
9.7 kmph / ENE
Last Updated: 29 Sept 2025, 07:49 AM
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