St Catharines Weather Conditions
Current Temperature Level
St Catharines Weather Conditions
Current Temperature Level
Feels Like 21°C
Chances of Rain14%
20°14%6 AM20°14%7 AM
20°15%8 AM
22°15%9 AM
24°30%10 AM
23°64%11 AM28°26%12 PM
27°12%1 PM28°11%2 PM28°8%3 PM29°7%4 PM30°6%5 PM30°4%6 PM27°6%7 PM26°39%8 PM24°65%9 PM23°23%10 PM22°13%11 PM21°12%12 AM21°23%1 AM21°13%2 AM21°13%3 AM21°11%4 AM20°9%Skies are likely to remain clear overnight.
Last Updated: 2026-08-08 05:00 (Local Time)
200°SSW
Direction
10.1km/h
Wind Speed
Gust Speed
5.3m/s
Precipitation
Precipitation
0mm
Pressure
1014mb
UV Index
0Low
Today
24
°C
84%Sunday
22
°C63%Monday
23
°C77%Tuesday
22
°C83%Wednesday
20
°C64%Thursday
20
°C69%Friday
20
°C62%Saturday
21
°C65%Sunday
22
°C74%Monday
22
°C77%Sunny
Clear Sky with temperature at 24 °C and humidity will be at 84% with 28.8 km/h winds.30°C / 20°C
Humi.84 %
Prec.2.39 mm
Sunrise
06:15 AM14hrs 15min
Sunset
08:30 PMTime
Condition
Temp
Humidity
UV
Wind Speed & Dir.
12 AM
Clear
22 °C
92 %
0
9.4 kmph / SSE
Clear
Feels 24 °C
Cover 1 %
Visibility 10 km
1 AM
Clear
21 °C
92 %
0
8.6 kmph / SSW
ClearFeels 23 °C
Cover 1 %
Visibility 10 km
2 AM
Clear
21 °C
90 %
0
10.4 kmph / SSW
ClearFeels 22 °C
Cover 2 %
Visibility 10 km
3 AM
Clear
20 °C
91 %
0
10.4 kmph / SW
ClearFeels 22 °C
Cover 0 %
Visibility 10 km
4 AM
Clear
20 °C
91 %
0
10.1 kmph / SSW
ClearFeels 21 °C
Cover 0 %
Visibility 10 km
5 AM
Clear
20 °C
91 %
0
10.1 kmph / SSW
ClearFeels 21 °C
Cover 4 %
Visibility 10 km
6 AM
Clear
20 °C
91 %
0
9 kmph / SSW
ClearFeels 21 °C
Cover 7 %
Visibility 9 km
7 AM
Sunny
20 °C
93 %
0.2
11.9 kmph / SSW
SunnyFeels 21 °C
Cover 4 %
Visibility 10 km
8 AM
Mist
22 °C
94 %
0.6
13.7 kmph / SSW
MistFeels 23 °C
Cover 2 %
Visibility 9 km
9 AM
Patchy rain nearby
24 °C
92 %
1.5
16.6 kmph / SSW
Patchy rain nearbyFeels 26 °C
Cover 87 %
Visibility 10 km
10 AM
Light Rain
23 °C
90 %
2.9
20.5 kmph / SW
Light RainFeels 24 °C
Cover 70 %
Visibility 9 km
11 AM
Patchy rain nearby
28 °C
78 %
4.7
24.1 kmph / SW
Patchy rain nearbyFeels 32 °C
Cover 75 %
Visibility 9 km
12 PM
Partly Cloudy
27 °C
80 %
6.3
23.4 kmph / SW
Partly CloudyFeels 30 °C
Cover 31 %
Visibility 9 km
1 PM
Partly Cloudy
28 °C
77 %
6.8
24.1 kmph / SW
Partly CloudyFeels 31 °C
Cover 39 %
Visibility 10 km
2 PM
Sunny
28 °C
75 %
6.9
26.6 kmph / SW
SunnyFeels 32 °C
Cover 20 %
Visibility 10 km
3 PM
Sunny
29 °C
71 %
6
28.4 kmph / SW
SunnyFeels 32 °C
Cover 17 %
Visibility 10 km
4 PM
Sunny
30 °C
70 %
4.3
28.1 kmph / SW
SunnyFeels 36 °C
Cover 4 %
Visibility 10 km
5 PM
Sunny
30 °C
66 %
2.6
28.8 kmph / SSW
SunnyFeels 33 °C
Cover 0 %
Visibility 10 km
6 PM
Sunny
27 °C
71 %
1.2
28.1 kmph / SSW
SunnyFeels 28 °C
Cover 14 %
Visibility 10 km
7 PM
Patchy rain nearby
26 °C
77 %
0.4
24.1 kmph / SSW
Patchy rain nearbyFeels 26 °C
Cover 71 %
Visibility 10 km
8 PM
Patchy rain nearby
24 °C
84 %
0
25.9 kmph / SW
Patchy rain nearbyFeels 23 °C
Cover 85 %
Visibility 9 km
9 PM
Patchy rain nearby
23 °C
85 %
0
28.1 kmph / W
Patchy rain nearbyFeels 22 °C
Cover 83 %
Visibility 10 km
10 PM
Clear
22 °C
85 %
0
11.9 kmph / WSW
ClearFeels 22 °C
Cover 25 %
Visibility 10 km
11 PM
Clear
21 °C
84 %
0
12.2 kmph / WSW
ClearFeels 22 °C
Cover 18 %
Visibility 10 km
31°19°28°19°28°17°29°15°29°16°30°20°30°21°30°20°26°19°26°21°25°19°24°17°23°17°23°17°25°16°26°19°26°19°25°19°
25°18°25°19°25°19°24°18°
24°18°25°18°25°19°24°18°24°18°24°18°25°18°24°18°24°18°AugustWeather Overview
No. of days:
Sunny
12
Cloudy
0
Rainy
19
Snowy
0
The monthly weather averages in St Catharines consist of 12 sunny days, 0 cloudy days, 19 rainy days, and 0 snowy days.
Canada's Hottest Cities - August 2026
1.
Castlegar, British Columbia
23 °C
Smoky haze
26%
0
5.4 kmph / NNW
2.
Trail, British Columbia
23 °C
Smoky haze
25%
0
5 kmph / N
3.
Sarnia, Ontario
23 °C
Clear
90%
0
11.5 kmph / SW
4.
Creston, British Columbia
23 °C
Smoky haze
31%
0
3.6 kmph / NNW
5.
Grand Forks, British Columbia
23 °C
Smoky haze
25%
0
7.9 kmph / NW
6.
Vernon, British Columbia
22 °C
Smoky haze
28%
0
3.6 kmph / SW
7.
Chatham, Ontario
22 °C
Clear
92%
0
11.5 kmph / SW
8.
Boucherville, Quebec
22 °C
Mist
94%
0
4.3 kmph / S
9.
Charlemagne, Quebec
22 °C
Mist
94%
0
4.3 kmph / S
10.
Longueuil, Quebec
22 °C
Mist
94%
0
4.3 kmph / S
Last Updated: 08 Aug 2026, 09:32 AM
City Weather RankingsFAQs About St Catharines Weather Conditions
1. What is the current temperature in St Catharines today - 08 August 2026?
1. What is the current temperature in St Catharines today - 08 August 2026?
The current temperature in St Catharines is 20°C, with a feels-like temperature of 21°C. Today's forecast shows a high of 30°C and a low of 20°C, giving a 10 degree swing through the day as of 05:00 AM 08 August 2026.
2. What are the current weather parameters in St Catharines today?
2. What are the current weather parameters in St Catharines today?
Here is a complete overview of St Catharines's current weather conditions as of 05:00 AM 08 August 2026: Condition : Clear Temperature : 20°C Cool (Feels like 21°C) Humidity : 91% Wind Speed : 10.1 km/h from SSW (200 degrees), Gust 5.4 m/s UV Index : 0 (Low Air Pressure : 1014 mb Cloud Cover : 4% Visibility : 10 km Precipitation : 0 mm (63% chance of rain)
3. What is the 10-day weather forecast for St Catharines from 05:00 AM 08 August 2026?
3. What is the 10-day weather forecast for St Catharines from 05:00 AM 08 August 2026?
From 05:00 AM 08 August 2026, St Catharines's 10-day forecast shows this trend: Today (Aug. 8) : Temp. 24°C, Hum. 84% and Sunny condition. Sunday (Aug. 9) : Temp. 22°C, Hum. 63% and Sunny condition. Monday (Aug. 10) : Temp. 23°C, Hum. 77% and Patchy rain nearby condition. Tuesday (Aug. 11) : Temp. 22°C, Hum. 83% and Patchy rain nearby condition. Wednesday (Aug. 12) : Temp. 20°C, Hum. 64% and Sunny condition. Thursday (Aug. 13) : Temp. 20°C, Hum. 69% and Sunny condition. Friday (Aug. 14) : Temp. 20°C, Hum. 62% and Sunny condition. Saturday (Aug. 15) : Temp. 21°C, Hum. 65% and Sunny condition. Sunday (Aug. 16) : Temp. 22°C, Hum. 74% and Rain Showers condition. Monday (Aug. 17) : Temp. 22°C, Hum. 77% and Rain Showers condition.
4. Will it rain in St Catharines today?
4. Will it rain in St Catharines today?
As of 05:00 AM 08 August 2026, there is a 14% chance of rainfall in St Catharines later today around 2026-08-08 05:00. Current precipitation is 0 mm. Residents are advised to carry an umbrella before heading out.
5. What is the monthly weather forecast for St Catharines in August 2026?
5. What is the monthly weather forecast for St Catharines in August 2026?
August 2026 in St Catharines is forecast to have 12 sunny days, 19 rainy days, 0 cloudy days, and 0 snowy days. Temperatures for the month range from lows around 15°C to highs of 31°C.
6. How does the weather in St Catharines affect air quality?
6. How does the weather in St Catharines affect air quality?
Weather directly impacts air quality in St Catharines. Calm winds, high humidity, fog, and high pressure trap pollutants near the ground, worsening AQI. Strong winds, rainfall, and low pressure help disperse them. Rising temperatures and UV levels intensify ozone and smog formation, while poor visibility signals elevated particulate matter. Monitoring weather alongside AQI gives the clearest picture of outdoor safety.
