St Catharines Weather Conditions
Current Temperature Level
St Catharines Weather Conditions
Current Temperature Level
Feels Like 22°C
Chances of Rain7%
23°7%12 PM24°5%1 PM25°4%2 PM26°3%3 PM27°3%4 PM27°2%5 PM27°2%6 PM27°2%7 PM23°3%8 PM22°4%9 PM
21°6%10 PM20°6%11 PM19°4%12 AM19°3%1 AM18°5%2 AM18°5%3 AM17°5%4 AM17°6%5 AM16°6%6 AM16°6%7 AM17°6%8 AM18°6%9 AM20°5%10 AM21°5%It is likely to be sunny; sun protection may help.
Last Updated: 2026-08-03 11:30 (Local Time)
315°NW
Direction
18km/h
Wind Speed
Gust Speed
6.8m/s
Precipitation
Precipitation
0mm
Pressure
1011mb
UV Index
5.2High
Today
21
°C
73%Tuesday
20
°C65%Wednesday
22
°C72%Thursday
23
°C78%Friday
23
°C84%Saturday
23
°C83%Sunday
25
°C77%Monday
22
°C79%Tuesday
22
°C73%Wednesday
22
°C74%Sunny
Clear Sky with temperature at 21 °C and humidity will be at 73% with 25.6 km/h winds.27°C / 17°C
Humi.73 %
Prec.1.32 mm
Sunrise
06:09 AM14hrs 27min
Sunset
08:36 PMTime
Condition
Temp
Humidity
UV
Wind Speed & Dir.
12 AM
Patchy rain nearby
19 °C
94 %
0
21.6 kmph / N
Patchy rain nearby
Feels 17 °C
Cover 100 %
Visibility 10 km
1 AM
Overcast
18 °C
88 %
0
19.1 kmph / NNW
OvercastFeels 17 °C
Cover 100 %
Visibility 10 km
2 AM
Light Rain
18 °C
91 %
0
19.4 kmph / NNW
Light RainFeels 17 °C
Cover 100 %
Visibility 10 km
3 AM
Patchy rain nearby
18 °C
84 %
0
18.4 kmph / NW
Patchy rain nearbyFeels 16 °C
Cover 100 %
Visibility 10 km
4 AM
Overcast
18 °C
85 %
0
23.4 kmph / NW
OvercastFeels 15 °C
Cover 100 %
Visibility 10 km
5 AM
Patchy rain nearby
18 °C
86 %
0
24.1 kmph / NW
Patchy rain nearbyFeels 15 °C
Cover 100 %
Visibility 10 km
6 AM
Patchy rain nearby
18 °C
85 %
0
25.6 kmph / NW
Patchy rain nearbyFeels 14 °C
Cover 100 %
Visibility 10 km
7 AM
Patchy rain nearby
17 °C
92 %
0.2
24.5 kmph / NW
Patchy rain nearbyFeels 15 °C
Cover 74 %
Visibility 2 km
8 AM
Patchy rain nearby
18 °C
84 %
0.7
22.7 kmph / WNW
Patchy rain nearbyFeels 16 °C
Cover 79 %
Visibility 10 km
9 AM
Sunny
19 °C
82 %
1.9
22.3 kmph / WNW
SunnyFeels 17 °C
Cover 0 %
Visibility 10 km
10 AM
Sunny
20 °C
79 %
3.5
21.2 kmph / NW
SunnyFeels 18 °C
Cover 3 %
Visibility 10 km
11 AM
Sunny
23 °C
75 %
5.2
18 kmph / NW
SunnyFeels 22 °C
Cover 0 %
Visibility 10 km
12 PM
Sunny
24 °C
69 %
6.7
15.8 kmph / NW
SunnyFeels 24 °C
Cover 0 %
Visibility 10 km
1 PM
Sunny
25 °C
64 %
7.4
15.5 kmph / WNW
SunnyFeels 25 °C
Cover 0 %
Visibility 10 km
2 PM
Sunny
26 °C
59 %
7.3
14 kmph / WNW
SunnyFeels 27 °C
Cover 0 %
Visibility 10 km
3 PM
Sunny
27 °C
55 %
6.3
12.2 kmph / NW
SunnyFeels 28 °C
Cover 0 %
Visibility 10 km
4 PM
Sunny
27 °C
52 %
4.6
10.4 kmph / NW
SunnyFeels 28 °C
Cover 0 %
Visibility 10 km
5 PM
Sunny
27 °C
50 %
2.8
9 kmph / NNW
SunnyFeels 28 °C
Cover 0 %
Visibility 10 km
6 PM
Sunny
27 °C
49 %
1.3
7.9 kmph / N
SunnyFeels 27 °C
Cover 0 %
Visibility 10 km
7 PM
Sunny
23 °C
55 %
0.4
7.2 kmph / N
SunnyFeels 23 °C
Cover 0 %
Visibility 10 km
8 PM
Sunny
22 °C
66 %
0
7.6 kmph / N
SunnyFeels 22 °C
Cover 0 %
Visibility 10 km
9 PM
Clear
21 °C
70 %
0
4.7 kmph / NW
ClearFeels 21 °C
Cover 0 %
Visibility 10 km
10 PM
Clear
20 °C
70 %
0
3.2 kmph / WNW
ClearFeels 20 °C
Cover 0 %
Visibility 10 km
11 PM
Clear
19 °C
63 %
0
5 kmph / WNW
ClearFeels 19 °C
Cover 0 %
Visibility 10 km
31°19°28°19°27°18°24°17°27°20°28°21°24°19°26°21°24°19°26°18°26°19°26°19°25°19°
25°19°25°19°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
6
Cloudy
1
Rainy
24
Snowy
0
The monthly weather averages in St Catharines consist of 6 sunny days, 1 cloudy days, 24 rainy days, and 0 snowy days.
St Catharines's Locations Weather Conditions
Canada's Hottest Cities - August 2026
1.
Saint Jean sur Richelieu, Quebec
27 °C
Sunny
77%
0.6
23 kmph / S
2.
Granby, Quebec
27 °C
Cloudy
69%
2.3
11.2 kmph / S
3.
Beloeil, Quebec
27 °C
Patchy rain nearby
80%
0.9
21.2 kmph / S
4.
Brossard, Quebec
26 °C
Sunny
82%
1.4
20.2 kmph / S
5.
Moncton, New Brunswick
26 °C
Partly Cloudy
77%
7
19.1 kmph / S
6.
Westmount, Quebec
26 °C
Sunny
84%
1.3
17.6 kmph / S
7.
Montreal, Quebec
26 °C
Sunny
84%
1.3
17.6 kmph / S
8.
Aylesford, Nova Scotia
26 °C
Partly Cloudy
81%
4.4
18.7 kmph / S
9.
Sydney, Nova Scotia
26 °C
Sunny
57%
6.2
12.2 kmph / SSW
10.
Pictou, Nova Scotia
26 °C
Partly Cloudy
77%
6
20.5 kmph / S
Last Updated: 03 Aug 2026, 03:57 PM
City Weather RankingsFAQs About St Catharines Weather Conditions
1. What is the current temperature in St Catharines today - 03 August 2026?
1. What is the current temperature in St Catharines today - 03 August 2026?
The current temperature in St Catharines is 23°C, with a feels-like temperature of 22°C. Today's forecast shows a high of 27°C and a low of 17°C, giving a 10 degree swing through the day as of 11:30 AM 03 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 11:30 AM 03 August 2026: Condition : Sunny Temperature : 23°C Pleasant (Feels like 22°C) Humidity : 75% Wind Speed : 18 km/h from NW (315 degrees), Gust 6.8 m/s UV Index : 5.2 (High Air Pressure : 1011 mb Cloud Cover : 0% Visibility : 10 km Precipitation : 0 mm (57% chance of rain)
3. What is the 10-day weather forecast for St Catharines from 11:30 AM 03 August 2026?
3. What is the 10-day weather forecast for St Catharines from 11:30 AM 03 August 2026?
From 11:30 AM 03 August 2026, St Catharines's 10-day forecast shows this trend: Today (Aug. 3) : Temp. 21°C, Hum. 73% and Sunny condition. Tuesday (Aug. 4) : Temp. 20°C, Hum. 65% and Sunny condition. Wednesday (Aug. 5) : Temp. 22°C, Hum. 72% and Sunny condition. Thursday (Aug. 6) : Temp. 23°C, Hum. 78% and Partly Cloudy condition. Friday (Aug. 7) : Temp. 23°C, Hum. 84% and Patchy rain nearby condition. Saturday (Aug. 8) : Temp. 23°C, Hum. 83% and Sunny condition. Sunday (Aug. 9) : Temp. 25°C, Hum. 77% and Sunny condition. Monday (Aug. 10) : Temp. 22°C, Hum. 79% and Sunny condition. Tuesday (Aug. 11) : Temp. 22°C, Hum. 73% and Rain Showers condition. Wednesday (Aug. 12) : Temp. 22°C, Hum. 74% and Rain Showers condition.
4. Will it rain in St Catharines today?
4. Will it rain in St Catharines today?
As of 11:30 AM 03 August 2026, there is a 5% chance of rainfall in St Catharines later today around 2026-08-03 12:00. 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 6 sunny days, 24 rainy days, 1 cloudy days, and 0 snowy days. Temperatures for the month range from lows around 17°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.
