Forecast - Environment Canada

Forecast

St. Catharines, ON (Issued: 11:00 AM EST Monday 26 January 2026)

Today

A few flurries ending early this afternoon then mainly cloudy with 40 percent chance of flurries. Wind northwest 20 km/h. High minus 8. Wind chill near minus 17. UV index 1 or low.

Tonight

Mainly cloudy with 40 percent chance of flurries. Local blowing snow. Wind west 20 km/h gusting to 40 becoming southwest 40 gusting to 60 near midnight. Low minus 14. Wind chill minus 15 this evening and minus 26 overnight.

Tue, 27 Jan

Mainly cloudy with 60 percent chance of flurries. Local blowing snow. Wind southwest 30 km/h gusting to 60. High minus 7. Wind chill minus 26 in the morning and minus 15 in the afternoon. UV index 1 or low.

Night

Clearing. Low minus 16.

Wed, 28 Jan

A mix of sun and cloud. High minus 13.

Night

Cloudy periods with 40 percent chance of flurries. Low minus 16.

Thu, 29 Jan

A mix of sun and cloud with 40 percent chance of flurries. High minus 10.

Night

Clear. Low minus 20.

Fri, 30 Jan

A mix of sun and cloud. High minus 10.

Night

Cloudy periods. Low minus 13.

Sat, 31 Jan

A mix of sun and cloud. High minus 7.

Night

Clear. Low minus 11.

Sun, 1 Feb

A mix of sun and cloud. High minus 5.

24 Hour Forecast - St. Catharines, ON

Date/Time	Temp. (°C)	Weather Conditions	LOP †	Wind (km/h)
26 January 2026
2 PM	-9	Chance of flurries	40	NW 20
3 PM	-8	Chance of flurries	40	NW 20
4 PM	-8	Chance of flurries	40	NW 20
5 PM	-8	Chance of flurries	40	NW 20
6 PM	-8	Chance of flurries	40	W 20 gust 40
7 PM	-8	Chance of flurries	40	W 20 gust 40
8 PM	-9	Chance of flurries	40	W 20 gust 40
9 PM	-9	Chance of flurries	40	W 20 gust 40
10 PM	-10	Chance of flurries	40	W 20 gust 40
11 PM	-10	Chance of flurries	40	W 20 gust 40
27 January 2026
12 AM	-11	Chance of flurries	40	SW 40 gust 60
1 AM	-11	Chance of flurries	40	SW 40 gust 60
2 AM	-12	Chance of flurries	40	SW 40 gust 60
3 AM	-13	Chance of flurries	40	SW 40 gust 60
4 AM	-14	Chance of flurries	40	SW 40 gust 60
5 AM	-14	Chance of flurries	40	SW 40 gust 60
6 AM	-14	Chance of flurries	40	SW 40 gust 60
7 AM	-14	Chance of flurries	40	SW 30 gust 60
8 AM	-13	Chance of flurries	60	SW 30 gust 60
9 AM	-13	Chance of flurries	60	SW 30 gust 60
10 AM	-12	Chance of flurries	60	SW 30 gust 60
11 AM	-11	Chance of flurries	60	SW 30 gust 60
12 PM	-11	Chance of flurries	60	SW 30 gust 60
1 PM	-10	Chance of flurries	60	SW 30 gust 50

† Likelihood of Precipitation (LOP) as described in the public forecast as a chance of measurable precipitation for a period of time. Nil: 0% Low: 40% or below Medium: 60% or 70% High: Above 70%

Extended Forecast - Environment Canada
Today Chance of flurries Max: -8°C	Tue, 27 Jan Chance of flurries Max: -7°C	Wed, 28 Jan A mix of sun and cloud Max: -13°C	Thu, 29 Jan Chance of flurries Max: -10°C	Fri, 30 Jan A mix of sun and cloud Max: -10°C	Sat, 31 Jan A mix of sun and cloud Max: -7°C	Sun, 1 Feb A mix of sun and cloud Max: -5°C
Tonight Chance of flurries Min: -14°C	Night Cloudy periods Min: -16°C	Night Chance of flurries Min: -16°C	Night Clear Min: -20°C	Night Cloudy periods Min: -13°C	Night Clear Min: -11°C