St. Catharines Weather Tomorrow

24°

Light rain, feels like 23°.

St. Catharines, Ontario, Canada · Wednesday, 4 November 2026

Low/High

16°/24°

Humidity

57%

Chance of rain

94%

Wind

18.7 km/h

2.8

Temperature Tomorrow

St. Catharines Weather Tomorrow by Time of Day

St. Catharines Weather Tomorrow by Time of Day
Time of day	Weather	Temperature	Chance of rain
Morning	Partly cloudy	16–22°C	0%
Afternoon	Overcast	21–24°C	10%
Evening	Overcast	21–22°C	80%
Night	Light rain	19–20°C	94%

St. Catharines Weather Tomorrow — Wednesday, 4 November 2026

St. Catharines Weather Tomorrow — Wednesday, 4 November 2026
Date	Low/High	Weather	Chance of rain	Wind	Summary
Wed 4 Nov	16 °/24 °	Light rain	94%	19 km/h	Wed 4 Nov Weather Low/High16°/24° Humidity57% Pressure1001 hPa Sunrise/Sunset 06:56 17:05

St. Catharines Hourly Weather Tomorrow

St. Catharines Hourly Weather Tomorrow
Time	Weather	Temperature	Feels like	Rain	Humidity	Wind
Wednesday, 4 November 2026
00:00	Overcast	17°	15°	0%	64%	11 km/h
01:00	Partly cloudy	17°	15°	0%	60%	13 km/h
02:00	Overcast	17°	15°	0%	60%	14 km/h
03:00	Overcast	17°	15°	0%	62%	14 km/h
04:00	Mostly clear	16°	14°	0%	63%	14 km/h
05:00	Partly cloudy	16°	14°	0%	64%	14 km/h
06:00	Partly cloudy	16°	14°	0%	66%	14 km/h
07:00	Partly cloudy	17°	14°	0%	64%	15 km/h
08:00	Mostly clear	18°	16°	0%	61%	14 km/h
09:00	Mostly clear	20°	18°	0%	55%	17 km/h
10:00	Overcast	22°	20°	0%	52%	19 km/h
11:00	Overcast	22°	20°	0%	54%	16 km/h
12:00	Partly cloudy	22°	20°	0%	55%	18 km/h
13:00	Partly cloudy	21°	20°	0%	57%	14 km/h
14:00	Overcast	23°	21°	1%	54%	13 km/h
15:00	Overcast	24°	23°	3%	50%	14 km/h
16:00	Overcast	24°	23°	10%	46%	10 km/h
17:00	Overcast	22°	21°	27%	49%	7 km/h
18:00	Overcast	21°	20°	49%	52%	9 km/h
19:00	Overcast	22°	19°	68%	46%	15 km/h
20:00	Overcast	22°	19°	80%	48%	18 km/h
21:00	Light rain	20°	18°	89%	55%	18 km/h
22:00	Light rain	19°	18°	94%	69%	10 km/h
23:00	Light rain	19°	18°	93%	64%	16 km/h

Summary

Tomorrow, Wednesday 4 November 2026, the weather in St. Catharines is forecast to be light rain, with temperatures of 16–24°C and a chance of rain of up to 94%, highest around 22:00 local time. Take an umbrella or a rain jacket.

Updated at 23:47 local time, 3 November 2026

St. Catharines Hourly Temperature and Chance of Rain

St. Catharines Air Quality

Good · AQI 33

Air quality is good and poses little or no risk for outdoor activity.

PM2.5 (µg/m³)8.7

PM10 (µg/m³)10

O₃ (µg/m³)75

NO₂ (µg/m³)7.6

SO₂ (µg/m³)1.8

CO (µg/m³)201

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