St Catharines Weather Conditions
Current Temperature Level
St Catharines Weather Conditions
Current Temperature Level
Feels Like 16°C
Chances of Rain25%
18°25%8 AM
19°11%9 AM19°11%10 AM20°10%11 AM22°7%12 PM24°5%1 PM25°4%2 PM26°3%3 PM27°3%4 PM27°2%5 PM27°2%6 PM24°3%7 PM23°3%8 PM22°4%9 PM
21°5%10 PM20°5%11 PM19°6%12 AM19°7%1 AM18°7%2 AM18°7%3 AM18°7%4 AM17°6%5 AM17°6%6 AM17°7%Skies may remain grey and overcast.
Last Updated: 2026-08-03 07:30 (Local Time)
303°WNW
Direction
20.5km/h
Wind Speed
Gust Speed
8.02m/s
Precipitation
Precipitation
0mm
Pressure
1008mb
UV Index
0.2Low
Today
21
°C
73%Tuesday
21
°C67%Wednesday
23
°C75%Thursday
23
°C82%Friday
22
°C86%Saturday
23
°C87%Sunday
21
°C72%Monday
22
°C67%Tuesday
22
°C73%Wednesday
22
°C74%Sunny
Clear Sky with temperature at 21 °C and humidity will be at 73% with 23.4 km/h winds.27°C / 18°C
Humi.73 %
Prec.0.97 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
22.3 kmph / NW
Patchy rain nearbyFeels 15 °C
Cover 100 %
Visibility 10 km
6 AM
Patchy rain nearby
18 °C
85 %
0
20.9 kmph / NW
Patchy rain nearbyFeels 15 °C
Cover 100 %
Visibility 10 km
7 AM
Overcast
18 °C
85 %
0.2
20.5 kmph / WNW
OvercastFeels 16 °C
Cover 91 %
Visibility 10 km
8 AM
Sunny
19 °C
84 %
0.7
20.5 kmph / NW
SunnyFeels 17 °C
Cover 2 %
Visibility 10 km
9 AM
Sunny
19 °C
83 %
1.9
20.2 kmph / NW
SunnyFeels 17 °C
Cover 4 %
Visibility 10 km
10 AM
Sunny
20 °C
81 %
3.5
17.3 kmph / NW
SunnyFeels 19 °C
Cover 6 %
Visibility 10 km
11 AM
Sunny
22 °C
73 %
5.2
16.2 kmph / NNW
SunnyFeels 22 °C
Cover 3 %
Visibility 10 km
12 PM
Sunny
24 °C
70 %
6.7
14 kmph / NNW
SunnyFeels 25 °C
Cover 1 %
Visibility 10 km
1 PM
Sunny
25 °C
66 %
7.4
13 kmph / NW
SunnyFeels 26 °C
Cover 0 %
Visibility 10 km
2 PM
Sunny
26 °C
61 %
7.3
13 kmph / NW
SunnyFeels 27 °C
Cover 0 %
Visibility 10 km
3 PM
Sunny
27 °C
56 %
6.3
10.4 kmph / WNW
SunnyFeels 28 °C
Cover 0 %
Visibility 10 km
4 PM
Sunny
27 °C
51 %
4.6
10.1 kmph / WNW
SunnyFeels 28 °C
Cover 0 %
Visibility 10 km
5 PM
Sunny
27 °C
51 %
2.8
10.4 kmph / WNW
SunnyFeels 28 °C
Cover 0 %
Visibility 10 km
6 PM
Sunny
24 °C
56 %
1.3
10.8 kmph / WNW
SunnyFeels 23 °C
Cover 2 %
Visibility 10 km
7 PM
Sunny
23 °C
61 %
0.4
10.1 kmph / NW
SunnyFeels 23 °C
Cover 0 %
Visibility 10 km
8 PM
Sunny
22 °C
64 %
0
10.8 kmph / NW
SunnyFeels 21 °C
Cover 0 %
Visibility 10 km
9 PM
Clear
21 °C
66 %
0
10.4 kmph / NW
ClearFeels 20 °C
Cover 0 %
Visibility 10 km
10 PM
Clear
20 °C
69 %
0
9 kmph / NW
ClearFeels 20 °C
Cover 0 %
Visibility 10 km
11 PM
Clear
19 °C
72 %
0
7.2 kmph / NW
ClearFeels 19 °C
Cover 2 %
Visibility 10 km
31°19°28°20°24°18°24°16°26°19°28°21°26°21°27°21°25°19°26°20°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
7
Cloudy
0
Rainy
24
Snowy
0
The monthly weather averages in St Catharines consist of 7 sunny days, 0 cloudy days, 24 rainy days, and 0 snowy days.
St Catharines's Locations Weather Conditions
Canada's Hottest Cities - August 2026
1.
Bathurst, New Brunswick
23 °C
Partly Cloudy
83%
0.7
14.8 kmph / S
2.
New Glasgow, Nova Scotia
22 °C
Cloudy
87%
0.8
11.5 kmph / S
3.
Pictou, Nova Scotia
22 °C
Cloudy
87%
0.8
11.5 kmph / S
4.
Miramichi, New Brunswick
22 °C
Overcast
86%
0.5
14 kmph / SSW
5.
Moncton, New Brunswick
21 °C
Sunny
86%
0.7
12.2 kmph / S
6.
Fredericton, New Brunswick
21 °C
Overcast
91%
0.3
11.9 kmph / SSE
7.
Shawinigan, Quebec
21 °C
Sunny
88%
0
10.1 kmph / ESE
8.
Saint Elie De Caxton, Quebec
21 °C
Sunny
88%
0
10.1 kmph / ESE
9.
Boucherville, Quebec
21 °C
Sunny
86%
0.1
14 kmph / SE
10.
Montreal, Quebec
21 °C
Overcast
88%
0.1
14.4 kmph / SE
Last Updated: 03 Aug 2026, 11:43 AM
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 18°C, with a feels-like temperature of 16°C. Today's forecast shows a high of 27°C and a low of 18°C, giving a 9 degree swing through the day as of 07:30 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 07:30 AM 03 August 2026: Condition : Overcast Temperature : 18°C Cool (Feels like 16°C) Humidity : 85% Wind Speed : 20.5 km/h from WNW (303 degrees), Gust 8 m/s UV Index : 0.2 (Low Air Pressure : 1008 mb Cloud Cover : 91% Visibility : 10 km Precipitation : 0 mm (45% chance of rain)
3. What is the 10-day weather forecast for St Catharines from 07:30 AM 03 August 2026?
3. What is the 10-day weather forecast for St Catharines from 07:30 AM 03 August 2026?
From 07:30 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. 21°C, Hum. 67% and Sunny condition. Wednesday (Aug. 5) : Temp. 23°C, Hum. 75% and Partly Cloudy condition. Thursday (Aug. 6) : Temp. 23°C, Hum. 82% and Patchy rain nearby condition. Friday (Aug. 7) : Temp. 22°C, Hum. 86% and Sunny condition. Saturday (Aug. 8) : Temp. 23°C, Hum. 87% and Patchy rain nearby condition. Sunday (Aug. 9) : Temp. 21°C, Hum. 72% and Sunny condition. Monday (Aug. 10) : Temp. 22°C, Hum. 67% 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 07:30 AM 03 August 2026, there is a 11% chance of rainfall in St Catharines later today around 2026-08-03 08:00. 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 7 sunny days, 24 rainy days, 0 cloudy days, and 0 snowy days. Temperatures for the month range from lows around 16°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.
