St Catharines Weather Conditions
Current Temperature Level
20 °C
16 AQI
Air quality index is: Good
Last Updated: 2025-08-20 11:45 (Local Time)
MapSt Catharines
St Catharines Weather Parameters
19 km/h
7 m/s
28° NNE
100 %
13 km
2.95 mm
1014 mb
UV Index1
Suggestions for
TodaySt Catharines20 Aug.
Hydration• Stay Hydrated
Clothing• Layering Must
Driving• Drive Safely
Sunscreen• ApplyTrending in Canada
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St Catharines 10-Days Weather Forecast
Today
21°C
92 %Thursday
20°C80 %Friday
20°C80 %Saturday
24°C66 %Sunday
22°C76 %Monday
19°C62 %Tuesday
16°C62 %Wednesday
19°C63 %Thursday
21°C61 %Friday
22°C58 %Moderate rain
Steady moderate rain with an expected temperature of 21 °C with 92% humidity and winds at 31.3 km/h.23°C / 19°C
Humi.92 %
Prec.12.21 mm
Sunrise
06:28 AM13hrs 43min
Sunset
08:11 PMTime
Condition
Temp
Humidity
UV
Wind Speed & Dir.
12 AM
Overcast
20 °C
86 %
0
13 kmph / ESE
Overcast 
Feels 20.2 °C
Cover 100 %
Visibility 10 km
1 AM
Overcast
20 °C
88 %
0
13.3 kmph / SSE
Overcast Feels 20.2 °C
Cover 100 %
Visibility 10 km
2 AM
Light rain shower
20 °C
92 %
0
14 kmph / SSW
Light rain showerFeels 20.1 °C
Cover 100 %
Visibility 10 km
3 AM
Overcast
20 °C
94 %
0
13.7 kmph / SSW
Overcast Feels 20 °C
Cover 100 %
Visibility 2 km
4 AM
Mist
20 °C
95 %
0
11.2 kmph / SSW
MistFeels 19.9 °C
Cover 100 %
Visibility 10 km
5 AM
Moderate or heavy rain shower
20 °C
98 %
0
8.6 kmph / SSW
Moderate or heavy rain showerFeels 19.9 °C
Cover 100 %
Visibility 10 km
6 AM
Fog
20 °C
98 %
0
5.8 kmph / WSW
FogFeels 20.1 °C
Cover 100 %
Visibility 2 km
7 AM
Fog
21 °C
98 %
0
8.3 kmph / NNW
FogFeels 20.7 °C
Cover 100 %
Visibility 10 km
8 AM
Moderate or heavy rain shower
21 °C
97 %
0.1
10.1 kmph / N
Moderate or heavy rain showerFeels 20.7 °C
Cover 100 %
Visibility 10 km
9 AM
Fog
21 °C
97 %
0.6
12.2 kmph / NNE
FogFeels 20.8 °C
Cover 100 %
Visibility 10 km
10 AM
Mist
21 °C
96 %
1.2
15.1 kmph / NNE
MistFeels 21.4 °C
Cover 100 %
Visibility 10 km
11 AM
Moderate rain
22 °C
97 %
1.3
19.1 kmph / NNE
Moderate rainFeels 21.9 °C
Cover 100 %
Visibility 10 km
12 PM
Overcast
20 °C
94 %
2.5
20.5 kmph / NE
OvercastFeels 22.3 °C
Cover 100 %
Visibility 13 km
1 PM
Overcast
22 °C
87 %
3.1
25.2 kmph / NE
Overcast Feels 21.8 °C
Cover 98 %
Visibility 10 km
2 PM
Overcast
22 °C
93 %
3.6
28.4 kmph / NE
Overcast Feels 24.6 °C
Cover 100 %
Visibility 10 km
3 PM
Cloudy
22 °C
83 %
3.1
29.5 kmph / NE
Cloudy Feels 24.6 °C
Cover 85 %
Visibility 10 km
4 PM
Overcast
21 °C
85 %
1.7
29.5 kmph / NE
Overcast Feels 21.3 °C
Cover 97 %
Visibility 10 km
5 PM
Overcast
21 °C
93 %
0.7
30.6 kmph / NE
Overcast Feels 21.1 °C
Cover 100 %
Visibility 10 km
6 PM
Overcast
21 °C
91 %
0.4
31 kmph / NE
Overcast Feels 20.7 °C
Cover 100 %
Visibility 10 km
7 PM
Overcast
20 °C
93 %
0.2
31.3 kmph / NE
Overcast Feels 20 °C
Cover 100 %
Visibility 10 km
8 PM
Overcast
20 °C
90 %
0
30.2 kmph / NE
Overcast Feels 19.6 °C
Cover 92 %
Visibility 10 km
9 PM
Overcast
19 °C
94 %
0
29.5 kmph / NE
Overcast Feels 19.2 °C
Cover 100 %
Visibility 10 km
10 PM
Overcast
19 °C
94 %
0
28.4 kmph / NE
Overcast Feels 19.3 °C
Cover 100 %
Visibility 10 km
11 PM
Cloudy
19 °C
88 %
0
27.4 kmph / NE
Cloudy Feels 18.8 °C
Cover 68 %
Visibility 10 km
Today
21°C92 %Thursday
20°C80 %Friday
20°C80 %Saturday
24°C66 %Sunday
22°C76 %Monday
19°C62 %Tuesday
16°C62 %Wednesday
19°C63 %Thursday
21°C61 %Friday
22°C58 %Temp22 °C
ConditionOvercast
Humidity87 %
Feels21.8 °C
Cover98 %
Visibility10 km
Wind Speed & Dir.25.2 kmph / NE
UV3.1
St Catharines 30-Days (August 2025) Weather Forecast
Sun.
Mon.
Tue.
Wed.
Thu.
Fri.
Sat.
1Fri.
26°14 °C
2Sat.
26°15 °C
3Sun.
30°14 °C
4Mon.
29°16 °C
5Tue.
31°16 °C
6Wed.
31°19 °C
7Thu.
31°19 °C
8Fri.
31°18 °C
9Sat.
33°20 °C
10Sun.
35°20 °C
11Mon.
34°22 °C
12Tue.
32°22 °C
13Wed.
33°22 °C
14Thu.
30°19 °C
15Fri.
32°16 °C
16Sat.
32°18 °C
17Sun.
25°18 °C
18Mon.
25°15 °C
19Tue.
31°13 °C
20Today
23°19 °C
21Thu.
23°18 °C
22Fri.
25°16 °C
23Sat.
29°18 °C
24Sun.
25°19 °C
25Mon.
22°16 °C
26Tue.
19°13 °C
27Wed.
23°14 °C
28Thu.
25°18 °C
29Fri.
25°18 °C
30Sat.
25°19 °C
31Sun.
23°19 °C
AugustWeather Overview
No. of days:
Sunny
15
Cloudy
3
Rainy
11
Snowy
0
The monthly weather averages in St Catharines consist of 15 sunny days, 3 cloudy days, 11 rainy days, and 0 snowy days.
St Catharines's Locations Weather Conditions
Canada's Hottest Cities - August 2025
1.
Estevan, Canada
Thundery outbreaks in nearby
70%
2.2
22.7 kmph / SSE
2.
Weyburn, Canada
Thundery outbreaks in nearby
64%
2
20.2 kmph / SSE
3.
Kerrobert, Canada
Cloudy
51%
1.5
18 kmph / E
4.
Regina, Canada
Partly cloudy
57%
1.7
18 kmph / SSE
5.
Yorkton, Canada
Thundery outbreaks in nearby
80%
2.1
21.2 kmph / SSE
6.
Redcliff, Canada
Cloudy
50%
1.4
18 kmph / WNW
7.
Medicine Hat, Canada
Cloudy
50%
1.4
18 kmph / WNW
8.
Amos, Canada
Partly cloudy
46%
4.7
4.3 kmph / SW
9.
Aylesford, Canada
Partly cloudy
35%
5.7
5.4 kmph / NNW
10.
Kentville, Canada
Partly cloudy
35%
5.7
5.4 kmph / NNW
Last Updated: 20 Aug 2025, 04:14 PM
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