⚠Cold Warning ▶
10:59 a.m. EST Thursday 29 January 2026

Cold Warning in effect for:Frigid temperatures expected tonight.

What:
Wind chills of minus 30 to minus 35.

When:
Tonight into early Friday morning.

Cover up. Frostbite can develop within minutes on exposed skin, especially with wind chill.

If it's too cold for you to stay outside, it's too cold for your pet to stay outside.

Watch for colour changes on fingers and toes, pain, numbness, a tingling sensation, or swelling. If present, move indoors and begin warming.

Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to ONstorm@ec.gc.ca or post reports on X using #ONStorm.

For more information about the alerting program, please visit: https://www.canada.ca/en/services/environment/weather/severeweather/weather-alerts/colour-coded-alerts.
Observed at: St. Catharines / Niagara District Airport
Date: 11:00 AM EST Thursday 29 January 2026
Temp.: -10 °C
Wind Chill: -18 °C
Wind: NW 20 km/h
Humidity: 64 %
Dew point: -16 °C
Pressure: 102.3 kPa
Tendency: kPa
Visibility: km 		Sunrise: 7:36
Sunset: 17:25
Normals:
Max -2°C Min -8°C
 Extended Forecast - Environment Canada
Today
Chance of flurries (70%)
Chance of flurries
Max: -10°C
 Fri, 30 Jan
Chance of flurries (30%)
Chance of flurries
Max: -11°C
 Sat, 31 Jan
Chance of flurries (40%)
Chance of flurries
Max: -9°C
 Sun, 1 Feb
Sunny
Sunny
Max: -6°C
 Mon, 2 Feb
A mix of sun and cloud
A mix of sun and cloud
Max: -5°C
 Tue, 3 Feb
Chance of flurries (30%)
Chance of flurries
Max: -4°C
 Wed, 4 Feb
A mix of sun and cloud
A mix of sun and cloud
Max: -4°C
Tonight
Chance of flurries (70%)
Chance of flurries
Min: -21°C
 Night
Chance of flurries (40%)
Chance of flurries
Min: -18°C
 Night
Cloudy periods
Cloudy periods
Min: -11°C
 Night
Clear
Clear
Min: -16°C
 Night
Cloudy periods
Cloudy periods
Min: -6°C
 Night
Cloudy periods
Cloudy periods
Min: -8°C
  

Forecast

St. Catharines, ON (Issued: 11:00 AM EST Thursday 29 January 2026)

Today
Mainly cloudy with 70 percent chance of flurries. Wind becoming northwest 20 km/h late this afternoon. High minus 10. Wind chill near minus 20. UV index 1 or low.
Tonight
Partly cloudy. 70 percent chance of flurries changing to 30 percent chance of flurries this evening. Wind northwest 20 km/h gusting to 40. Low minus 21. Wind chill minus 20 this evening and minus 32 overnight. Risk of frostbite.
Fri, 30 Jan
Mainly cloudy with 30 percent chance of flurries. Wind northwest 20 km/h becoming light early in the morning. High minus 11. Wind chill minus 32 in the morning and minus 16 in the afternoon. Risk of frostbite. UV index 1 or low.
Night
Cloudy periods with 40 percent chance of flurries. Low minus 18.
Sat, 31 Jan
A mix of sun and cloud with 40 percent chance of flurries. High minus 9.
Night
Cloudy periods. Low minus 11.
Sun, 1 Feb
Sunny. High minus 6.
Night
Clear. Low minus 16.
Mon, 2 Feb
A mix of sun and cloud. High minus 5.
Night
Cloudy periods. Low minus 6.
Tue, 3 Feb
A mix of sun and cloud with 30 percent chance of flurries. High minus 4.
Night
Cloudy periods. Low minus 8.
Wed, 4 Feb
A mix of sun and cloud. High minus 4.

24 Hour Forecast - St. Catharines, ON

Date/Time Temp.
(°C)
Weather Conditions
LOP †		 Wind
(km/h)
29 January 2026
12 PM -10 Chance of flurries (70%)  Chance of flurries 70 NW 15
1 PM -10 Chance of flurries (70%)  Chance of flurries 70 NW 10
2 PM -10 Chance of flurries (70%)  Chance of flurries 70 NW 10
3 PM -10 Chance of flurries (70%)  Chance of flurries 70 NW 10
4 PM -10 Chance of flurries (70%)  Chance of flurries 70 NW 20
5 PM -11 Chance of flurries (70%)  Chance of flurries 70 NW 20
6 PM -11 Chance of flurries (70%)  Chance of flurries 70 NW 20
7 PM -12 Chance of flurries (70%)  Chance of flurries 70 NW 20
8 PM -12 Chance of flurries (30%)  Chance of flurries 30 NW 20
9 PM -13 Chance of flurries (30%)  Chance of flurries 30 NW 20
10 PM -13 Chance of flurries (30%)  Chance of flurries 30 NW 20 gust 40
11 PM -14 Chance of flurries (30%)  Chance of flurries 30 NW 20 gust 40
30 January 2026
12 AM -15 Chance of flurries (30%)  Chance of flurries 30 NW 20 gust 40
1 AM -16 Chance of flurries (30%)  Chance of flurries 30 NW 20
2 AM -18 Chance of flurries (30%)  Chance of flurries 30 NW 20
3 AM -19 Chance of flurries (30%)  Chance of flurries 30 NW 20
4 AM -21 Chance of flurries (30%)  Chance of flurries 30 NW 20
5 AM -21 Chance of flurries (30%)  Chance of flurries 30 NW 20
6 AM -21 Chance of flurries (30%)  Chance of flurries 30 NW 20
7 AM -21 Chance of flurries (30%)  Chance of flurries 30 W 15
8 AM -19 Chance of flurries (30%)  Chance of flurries 30 W 15
9 AM -18 Chance of flurries (30%)  Chance of flurries 30 W 15
10 AM -16 Chance of flurries (30%)  Chance of flurries 30 W 15
11 AM -15 Chance of flurries (30%)  Chance of flurries 30 W 15
 
† 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%

Environment Canada