St Catharines Weather Conditions
Current Temperature Level
St Catharines Weather Conditions
Current Temperature Level
Feels Like 18°C
Chances of Rain10%
18°10%4 AM18°10%5 AM17°9%6 AM17°9%7 AM
17°11%8 AM19°10%9 AM21°8%10 AM23°3%11 AM28°2%12 PM29°3%1 PM29°2%2 PM29°2%3 PM30°1%4 PM30°1%5 PM30°1%6 PM27°3%7 PM25°4%8 PM23°5%9 PM22°5%10 PM22°5%11 PM21°5%12 AM21°5%1 AM21°5%2 AM21°6%Skies are likely to remain clear overnight.
Last Updated: 2026-07-31 03:30 (Local Time)
265°W
Direction
10.4km/h
Wind Speed
Gust Speed
6.08m/s
Precipitation
Precipitation
0mm
Pressure
1014mb
UV Index
0Low
Today
23
°C
65%Saturday
23
°C69%Sunday
19
°C94%Monday
19
°C84%Tuesday
21
°C84%Wednesday
22
°C90%Thursday
24
°C75%Friday
24
°C80%Saturday
22
°C75%Sunday
22
°C75%Sunny
Clear Sky with temperature at 23 °C and humidity will be at 65% with 18.7 km/h winds.30°C / 17°C
Humi.65 %
Prec.0 mm
Sunrise
06:06 AM14hrs 34min
Sunset
08:40 PMTime
Condition
Temp
Humidity
UV
Wind Speed & Dir.
12 AM
Clear
20 °C
68 %
0
8.6 kmph / WNW
Clear
Feels 19 °C
Cover 0 %
Visibility 10 km
1 AM
Clear
19 °C
77 %
0
7.2 kmph / W
ClearFeels 19 °C
Cover 0 %
Visibility 10 km
2 AM
Clear
18 °C
85 %
0
9 kmph / W
ClearFeels 18 °C
Cover 2 %
Visibility 10 km
3 AM
Clear
18 °C
82 %
0
10.4 kmph / W
ClearFeels 18 °C
Cover 0 %
Visibility 10 km
4 AM
Clear
18 °C
83 %
0
10.1 kmph / W
ClearFeels 17 °C
Cover 0 %
Visibility 10 km
5 AM
Clear
17 °C
80 %
0
12.2 kmph / W
ClearFeels 16 °C
Cover 0 %
Visibility 10 km
6 AM
Clear
17 °C
81 %
0
12.6 kmph / W
ClearFeels 15 °C
Cover 0 %
Visibility 10 km
7 AM
Sunny
17 °C
84 %
0.2
9.7 kmph / W
SunnyFeels 16 °C
Cover 0 %
Visibility 10 km
8 AM
Sunny
19 °C
82 %
0.8
7.2 kmph / WSW
SunnyFeels 19 °C
Cover 1 %
Visibility 10 km
9 AM
Sunny
21 °C
76 %
1.9
7.9 kmph / WSW
SunnyFeels 22 °C
Cover 0 %
Visibility 10 km
10 AM
Sunny
23 °C
59 %
3.6
7.6 kmph / WSW
SunnyFeels 24 °C
Cover 0 %
Visibility 10 km
11 AM
Sunny
28 °C
53 %
5.5
6.8 kmph / WSW
SunnyFeels 29 °C
Cover 0 %
Visibility 10 km
12 PM
Sunny
29 °C
56 %
6.9
7.2 kmph / W
SunnyFeels 30 °C
Cover 0 %
Visibility 10 km
1 PM
Sunny
29 °C
51 %
7.7
6.5 kmph / WSW
SunnyFeels 30 °C
Cover 0 %
Visibility 10 km
2 PM
Sunny
29 °C
49 %
7.5
6.1 kmph / WSW
SunnyFeels 30 °C
Cover 0 %
Visibility 10 km
3 PM
Sunny
30 °C
45 %
6.2
4.7 kmph / SW
SunnyFeels 30 °C
Cover 0 %
Visibility 10 km
4 PM
Sunny
30 °C
41 %
4.4
5.8 kmph / SSW
SunnyFeels 30 °C
Cover 0 %
Visibility 10 km
5 PM
Sunny
30 °C
39 %
2.7
10.4 kmph / SSW
SunnyFeels 29 °C
Cover 0 %
Visibility 10 km
6 PM
Sunny
27 °C
55 %
1.2
17.3 kmph / SSW
SunnyFeels 27 °C
Cover 9 %
Visibility 10 km
7 PM
Sunny
25 °C
59 %
0.4
18.7 kmph / SSW
SunnyFeels 23 °C
Cover 10 %
Visibility 10 km
8 PM
Sunny
23 °C
64 %
0
16.2 kmph / SSW
SunnyFeels 22 °C
Cover 12 %
Visibility 10 km
9 PM
Clear
22 °C
64 %
0
15.5 kmph / SSW
ClearFeels 21 °C
Cover 12 %
Visibility 10 km
10 PM
Clear
22 °C
64 %
0
14 kmph / SSW
ClearFeels 20 °C
Cover 12 %
Visibility 10 km
11 PM
Clear
21 °C
65 %
0
13 kmph / SSW
ClearFeels 20 °C
Cover 9 %
Visibility 10 km
37°24°36°23°35°23°30°23°27°19°28°17°28°17°32°17°33°20°28°19°29°17°29°16°33°16°38°21°32°22°
30°20°30°17°35°19°27°16°28°14°30°19°24°15°27°12°27°13°30°15°30°17°32°18°26°20°28°18°28°17°27°17°JulyWeather Overview
No. of days:
Sunny
29
Cloudy
0
Rainy
0
Snowy
0
The monthly weather averages in St Catharines consist of 29 sunny days, 0 cloudy days, 0 rainy days, and 0 snowy days.
St Catharines's Locations Weather Conditions
Canada's Hottest Cities - July 2026
1.
Creston, British Columbia
23 °C
Clear
22%
0
3.6 kmph / W
2.
Castlegar, British Columbia
23 °C
Clear
23%
0
3.6 kmph / N
3.
Trail, British Columbia
23 °C
Clear
23%
0
4.3 kmph / NNE
4.
Grand Forks, British Columbia
22 °C
Smoky haze
22%
0
3.6 kmph / E
5.
Chatham, Ontario
22 °C
Clear
83%
0
5.4 kmph / SSE
6.
Oliver Paipoonge, Ontario
21 °C
Clear
73%
0
9 kmph / W
7.
Kenora, Ontario
21 °C
Clear
76%
0
7.6 kmph / N
8.
Sarnia, Ontario
21 °C
Clear
77%
0
8.3 kmph / SSW
9.
Windsor, Ontario
21 °C
Clear
84%
0
4.7 kmph / SW
10.
Redcliff, Alberta
20 °C
Clear
52%
0
7.6 kmph / S
Last Updated: 31 Jul 2026, 08:01 AM
City Weather RankingsFAQs About St Catharines Weather Conditions
1. What is the current temperature in St Catharines today - 31 July 2026?
1. What is the current temperature in St Catharines today - 31 July 2026?
The current temperature in St Catharines is 18°C, with a feels-like temperature of 18°C. Today's forecast shows a high of 30°C and a low of 17°C, giving a 13 degree swing through the day as of 03:30 AM 31 July 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 03:30 AM 31 July 2026: Condition : Clear Temperature : 18°C Cool (Feels like 18°C) Humidity : 82% Wind Speed : 10.4 km/h from W (265 degrees), Gust 6.1 m/s UV Index : 0 (Low Air Pressure : 1014 mb Cloud Cover : 0% Visibility : 10 km Precipitation : 0 mm (4% chance of rain)
3. What is the 10-day weather forecast for St Catharines from 03:30 AM 31 July 2026?
3. What is the 10-day weather forecast for St Catharines from 03:30 AM 31 July 2026?
From 03:30 AM 31 July 2026, St Catharines's 10-day forecast shows this trend: Today (Jul. 31) : Temp. 23°C, Hum. 65% and Sunny condition. Saturday (Aug. 1) : Temp. 23°C, Hum. 69% and Sunny condition. Sunday (Aug. 2) : Temp. 19°C, Hum. 94% and Patchy rain nearby condition. Monday (Aug. 3) : Temp. 19°C, Hum. 84% and Patchy rain nearby condition. Tuesday (Aug. 4) : Temp. 21°C, Hum. 84% and Sunny condition. Wednesday (Aug. 5) : Temp. 22°C, Hum. 90% and Mist condition. Thursday (Aug. 6) : Temp. 24°C, Hum. 75% and Sunny condition. Friday (Aug. 7) : Temp. 24°C, Hum. 80% and Sunny condition. Saturday (Aug. 8) : Temp. 22°C, Hum. 75% and Rain Showers condition. Sunday (Aug. 9) : Temp. 22°C, Hum. 75% and Rain Showers condition.
4. Will it rain in St Catharines today?
4. Will it rain in St Catharines today?
As of 03:30 AM 31 July 2026, there is a 10% chance of rainfall in St Catharines later today around 2026-07-31 04:00. 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 July 2026?
5. What is the monthly weather forecast for St Catharines in July 2026?
July 2026 in St Catharines is forecast to have 29 sunny days, 0 rainy days, 0 cloudy days, and 0 snowy days. Temperatures for the month range from lows around 12°C to highs of 38°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.
