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WeatherLive › Ontario › St. Catharines

St. Catharines, ON Weather

Today Hourly 10-Day Weekend Monthly Radar Air Quality Climate
Current WeatherSt. Catharines · 11:32 PM EST
5° | 4°
4°C
Feels like 1°
Partly cloudy
WindN 9 mph · Gusts 15 mph
Precip47% · 0.02 in
Humidity67% · Dew point -2°
UV index1 Low
Air Quality27 Good
Pressure29.85 inHg
Visibility6 mi
Sunrise / Sunset7:07 AM · 4:55 PM · 9h 48m

Weather map — St. Catharines

Full radar →
Now
4°
18%
9 mph
00:00
4°
18%
9 mph
01:00
4°
18%
8 mph
02:00
4°
19%
9 mph
03:00
4°
20%
9 mph
04:00
4°
23%
10 mph
05:00
4°
27%
10 mph
06:00
4°
27%
11 mph
07:00
4°
27%
11 mph
08:00
4°
30%
12 mph
09:00
5°
33%
12 mph
10:00
5°
34%
13 mph
11:00
5°
30%
13 mph
12:00
6°
30%
14 mph
13:00
6°
33%
14 mph
14:00
6°
30%
14 mph
15:00
7°
25%
14 mph
16:00
7°
21%
15 mph
17:00
6°
27%
15 mph
18:00
6°
33%
16 mph
19:00
6°
37%
16 mph
20:00
6°
41%
15 mph
21:00
6°
32%
15 mph
22:00
6°
27%
14 mph

Today · Fri 11/13

High 5°
47% / 0.02 in

Showers. Winds NE at 15 mph.

Tonight · Fri 11/13

Low 4°
18% / –

Partly cloudy. Winds NW at 9 mph.

Tomorrow · Sat 11/14

7° | 4°
69% / 0.07 in

Showers. Winds NW at 16 mph.

7-day trend

St. Catharines · temperature + precipitation

10-day forecast

Updated 11:32 PM

Details & indices

Wind
9 mph N
Gusts 15 mph
Humidity
67%
Dew point -2°
Pressure
29.85 inHg
Falling
UV index
1 — Low
High today
Air Quality
Good
AQI 27 · US EPA
Allergy
Low
Ragweed
Visibility
6 mi
Clear view
Allergy — St. Catharines

🌿 Conditions right now

View all →
Birch
None
Grass
None
Oak
None
Alder
None
Hazel
None
Mugwort
None
Ragweed
Low

Sun & moon

Sunrise7:07 AM
Sunset4:55 PM
Length of day9h 48m
Moonrise11:22 AM
Moonset7:57 PM
Moon phase🌒 Waxing Crescent · 21%
Next full moonNov 24 Beaver Moon
Latitude43.1713°N
Longitude-79.2427°E

Water temps nearby

View all →
No beaches within 50 miles
🌤️No rain expected in the next 90 minutes
Now+30+60+90 min
Minute-by-minute precip · HRRR nowcast

Daily planner

computed from today's forecast
Laundry day
Poor
Line-drying weather
Grilling
Poor
Fire up the grill
Running
Fair
Lace up outside
Patio
Poor
Dinner outdoors
Nearby places in Ontario
Toronto
Mostly cloudy
2°
Ottawa
Partly cloudy
2°
Mississauga
Mostly cloudy
2°
Brampton
Mostly cloudy
1°
Hamilton
Mostly cloudy
4°
London
Partly cloudy
0°
NBM + global weather models
Updated: 11:32 PM
St. Catharines, ON · Elev 335 ft · 43.17°N, 79.24°W · Ontario · Forecast computed for these exact coordinates
Powered by NWS/NOAA guidance, multi-model forecasts and official environmental feeds · NOAA/NWS · EPA AirNow · MET Norway · global models
Updated: 11:32 PM