St Catharines Weather Conditions
Current Temperature Level
St Catharines Weather Conditions
Current Temperature Level
Feels Like 25°C
Chances of Rain10%
23°10%12 PM26°8%1 PM27°6%2 PM28°5%3 PM29°5%4 PM28°4%5 PM27°4%6 PM26°4%7 PM26°5%8 PM24°7%9 PM
23°9%10 PM23°9%11 PM23°11%12 AM22°11%1 AM
22°14%2 AM
21°18%3 AM21°12%4 AM21°12%5 AM21°12%6 AM20°12%7 AM20°11%8 AM21°10%9 AM23°8%10 AM24°8%It is likely to be sunny; sun protection may help.
Last Updated: 2026-08-05 11:00 (Local Time)
316°NW
Direction
4km/h
Wind Speed
Gust Speed
1.4m/s
Precipitation
Precipitation
0mm
Pressure
1019mb
UV Index
1.6Low
Today
22
°C
73%Thursday
23
°C78%Friday
23
°C83%Saturday
23
°C84%Sunday
23
°C83%Monday
21
°C85%Tuesday
20
°C69%Wednesday
20
°C62%Thursday
22
°C73%Friday
22
°C71%Sunny
Clear Sky with temperature at 22 °C and humidity will be at 73% with 9.7 km/h winds.29°C / 16°C
Humi.73 %
Prec.0 mm
Sunrise
06:11 AM14hrs 23min
Sunset
08:34 PMTime
Condition
Temp
Humidity
UV
Wind Speed & Dir.
12 AM
Clear
19 °C
84 %
0
6.8 kmph / S
Clear
Feels 19 °C
Cover 4 %
Visibility 10 km
1 AM
Clear
18 °C
78 %
0
5.8 kmph / SSW
ClearFeels 18 °C
Cover 1 %
Visibility 10 km
2 AM
Clear
17 °C
76 %
0
5.4 kmph / SSW
ClearFeels 17 °C
Cover 0 %
Visibility 10 km
3 AM
Clear
17 °C
66 %
0
6.5 kmph / SSW
ClearFeels 16 °C
Cover 0 %
Visibility 10 km
4 AM
Clear
17 °C
59 %
0
4.3 kmph / SW
ClearFeels 16 °C
Cover 0 %
Visibility 10 km
5 AM
Clear
16 °C
56 %
0
5.8 kmph / SSW
ClearFeels 15 °C
Cover 0 %
Visibility 10 km
6 AM
Clear
16 °C
58 %
0
4 kmph / SW
ClearFeels 14 °C
Cover 0 %
Visibility 10 km
7 AM
Sunny
16 °C
86 %
0.1
3.2 kmph / SW
SunnyFeels 17 °C
Cover 6 %
Visibility 10 km
8 AM
Sunny
18 °C
87 %
0.6
3.2 kmph / WSW
SunnyFeels 19 °C
Cover 3 %
Visibility 10 km
9 AM
Sunny
21 °C
79 %
1.1
2.9 kmph / W
SunnyFeels 23 °C
Cover 0 %
Visibility 10 km
10 AM
Sunny
22 °C
78 %
2.1
2.5 kmph / WNW
SunnyFeels 25 °C
Cover 6 %
Visibility 10 km
11 AM
Sunny
23 °C
81 %
1.6
4 kmph / NW
SunnyFeels 25 °C
Cover 4 %
Visibility 10 km
12 PM
Sunny
26 °C
78 %
2.5
5.4 kmph / NNW
SunnyFeels 28 °C
Cover 0 %
Visibility 10 km
1 PM
Sunny
27 °C
73 %
2.5
5.8 kmph / NNE
SunnyFeels 29 °C
Cover 0 %
Visibility 10 km
2 PM
Sunny
28 °C
69 %
2.7
5.4 kmph / NE
SunnyFeels 31 °C
Cover 0 %
Visibility 10 km
3 PM
Sunny
29 °C
67 %
6
4.7 kmph / NE
SunnyFeels 32 °C
Cover 0 %
Visibility 10 km
4 PM
Sunny
28 °C
66 %
5
5 kmph / NE
SunnyFeels 29 °C
Cover 0 %
Visibility 10 km
5 PM
Sunny
27 °C
64 %
3
6.1 kmph / ENE
SunnyFeels 29 °C
Cover 0 %
Visibility 10 km
6 PM
Sunny
26 °C
64 %
1.4
6.8 kmph / ESE
SunnyFeels 28 °C
Cover 0 %
Visibility 10 km
7 PM
Sunny
26 °C
68 %
0.4
7.2 kmph / ESE
SunnyFeels 27 °C
Cover 0 %
Visibility 10 km
8 PM
Sunny
24 °C
74 %
0
9.4 kmph / ESE
SunnyFeels 25 °C
Cover 0 %
Visibility 10 km
9 PM
Clear
23 °C
81 %
0
9.7 kmph / SSE
ClearFeels 25 °C
Cover 0 %
Visibility 10 km
10 PM
Clear
23 °C
80 %
0
9.7 kmph / SSW
ClearFeels 24 °C
Cover 0 %
Visibility 10 km
11 PM
Clear
23 °C
86 %
0
8.3 kmph / SW
ClearFeels 25 °C
Cover 2 %
Visibility 10 km
31°19°28°19°28°17°29°15°29°16°27°20°26°21°27°20°26°20°23°18°24°17°23°17°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
9
Cloudy
0
Rainy
22
Snowy
0
The monthly weather averages in St Catharines consist of 9 sunny days, 0 cloudy days, 22 rainy days, and 0 snowy days.
St Catharines's Locations Weather Conditions
Canada's Hottest Cities - August 2026
1.
Pictou, Nova Scotia
33 °C
Sunny
37%
5.5
21.2 kmph / WNW
2.
New Glasgow, Nova Scotia
33 °C
Sunny
37%
5.5
21.2 kmph / WNW
3.
Miramichi, New Brunswick
32 °C
Sunny
44%
5.1
12.2 kmph / WNW
4.
Bathurst, New Brunswick
32 °C
Sunny
45%
5
18 kmph / WNW
5.
Moncton, New Brunswick
31 °C
Sunny
53%
5.2
15.5 kmph / W
6.
Fredericton, New Brunswick
31 °C
Sunny
54%
5.1
13.7 kmph / W
7.
Halifax, Nova Scotia
29 °C
Sunny
51%
5.6
15.8 kmph / W
8.
Lake Loon, Nova Scotia
29 °C
Sunny
51%
5.6
15.1 kmph / W
9.
Kentville, Nova Scotia
29 °C
Sunny
52%
5.4
16.9 kmph / W
10.
Aylesford, Nova Scotia
29 °C
Sunny
52%
5.4
16.9 kmph / W
Last Updated: 05 Aug 2026, 03:11 PM
City Weather RankingsFAQs About St Catharines Weather Conditions
1. What is the current temperature in St Catharines today - 05 August 2026?
1. What is the current temperature in St Catharines today - 05 August 2026?
The current temperature in St Catharines is 23°C, with a feels-like temperature of 25°C. Today's forecast shows a high of 29°C and a low of 16°C, giving a 13 degree swing through the day as of 11:00 AM 05 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 11:00 AM 05 August 2026: Condition : Sunny Temperature : 23°C Pleasant (Feels like 25°C) Humidity : 81% Wind Speed : 4 km/h from NW (316 degrees), Gust 1.5 m/s UV Index : 1.6 (Low Air Pressure : 1019 mb Cloud Cover : 4% Visibility : 10 km Precipitation : 0 mm (7% chance of rain)
3. What is the 10-day weather forecast for St Catharines from 11:00 AM 05 August 2026?
3. What is the 10-day weather forecast for St Catharines from 11:00 AM 05 August 2026?
From 11:00 AM 05 August 2026, St Catharines's 10-day forecast shows this trend: Today (Aug. 5) : Temp. 22°C, Hum. 73% and Sunny condition. Thursday (Aug. 6) : Temp. 23°C, Hum. 78% and Sunny condition. Friday (Aug. 7) : Temp. 23°C, Hum. 83% and Patchy rain nearby condition. Saturday (Aug. 8) : Temp. 23°C, Hum. 84% and Patchy rain nearby condition. Sunday (Aug. 9) : Temp. 23°C, Hum. 83% and Sunny condition. Monday (Aug. 10) : Temp. 21°C, Hum. 85% and Sunny condition. Tuesday (Aug. 11) : Temp. 20°C, Hum. 69% and Sunny condition. Wednesday (Aug. 12) : Temp. 20°C, Hum. 62% and Sunny condition. Thursday (Aug. 13) : Temp. 22°C, Hum. 73% and Rain Showers condition. Friday (Aug. 14) : Temp. 22°C, Hum. 71% and Heavy Rain condition.
4. Will it rain in St Catharines today?
4. Will it rain in St Catharines today?
As of 11:00 AM 05 August 2026, there is a 10% chance of rainfall in St Catharines later today around 2026-08-05 11:00. 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 9 sunny days, 22 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.
