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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 · 1:35 AM EST
44° | 39°
39°F
Feels like 34°
Partly cloudy
WindNW 8 mph · Gusts 14 mph
Precip69% · 0.07 in
Humidity67% · Dew point 29°
UV index1 Low
Air Quality28 Good
Pressure29.85 inHg
Visibility6 mi
Sunrise / Sunset7:08 AM · 4:54 PM · 9h 46m

Weather map — St. Catharines

Full radar →
Now
39°
18%
8 mph
02:00
39°
19%
9 mph
03:00
39°
20%
9 mph
04:00
39°
23%
10 mph
05:00
39°
27%
10 mph
06:00
39°
27%
11 mph
07:00
39°
27%
11 mph
08:00
40°
30%
12 mph
09:00
40°
33%
12 mph
10:00
41°
34%
13 mph
11:00
42°
30%
13 mph
12:00
42°
30%
14 mph
13:00
43°
33%
14 mph
14:00
43°
30%
14 mph
15:00
44°
25%
14 mph
16:00
44°
21%
15 mph
17:00
43°
27%
15 mph
18:00
43°
33%
16 mph
19:00
42°
37%
16 mph
20:00
42°
41%
15 mph
21:00
42°
32%
15 mph
22:00
42°
27%
14 mph
23:00
42°
25%
14 mph
00:00
42°
23%
13 mph

Today · Sat 11/14

High 44°
69% / 0.07 in

Showers. Winds NW at 16 mph.

Overnight · Sat 11/14

Low 39°
19% / –

Partly cloudy. Winds NW at 9 mph.

Tomorrow · Sun 11/15

43° | 40°
48% / 0.02 in

Showers. Winds NW at 13 mph.

7-day trend

St. Catharines · temperature + precipitation

10-day forecast

Updated 1:35 AM

Details & indices

Wind
8 mph NW
Gusts 14 mph
Humidity
67%
Dew point 29°
Pressure
29.85 inHg
Falling
UV index
1 — Low
High today
Air Quality
Good
AQI 28 · 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

Sunrise7:08 AM
Sunset4:54 PM
Length of day9h 46m
Moonrise11:59 AM
Moonset8:59 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
36°
Ottawa
Light snow
35°
Mississauga
Mostly cloudy
35°
Brampton
Partly cloudy
35°
Hamilton
Mostly cloudy
38°
London
Partly cloudy
31°
NBM + global weather models
Updated: 1:35 AM
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: 1:35 AM