Observed at: St. Catharines / Niagara District Airport
Date: 6:00 PM EDT Tuesday 6 October 2026
Partly Cloudy
Partly Cloudy 		Temp.: 13 °C
Wind: SSW 18 km/h
Humidity: 60 %
Dew point: 5 °C
Pressure: 101.9 kPa
Tendency: 0.26 kPa
Visibility: 24 km 		Sunrise: 7:20
Sunset: 18:50
Normals:
Max 17°C Min 8°C
 Extended Forecast - Environment Canada
  Wed, 7 Oct
Chance of showers (30%)
Chance of showers
Max: 21°C
 Thu, 8 Oct
Sunny
Sunny
Max: 18°C
 Fri, 9 Oct
Chance of showers (30%)
Chance of showers
Max: 18°C
 Sat, 10 Oct
Sunny
Sunny
Max: 18°C
 Sun, 11 Oct
A mix of sun and cloud
A mix of sun and cloud
Max: 19°C
 Mon, 12 Oct
Chance of showers (30%)
Chance of showers
Max: 19°C
Tonight
A few clouds
A few clouds
Min: 11°C
 Night
Chance of showers (30%)
Chance of showers
Min: 11°C
 Night
Chance of showers (30%)
Chance of showers
Min: 10°C
 Night
Chance of showers (30%)
Chance of showers
Min: 7°C
 Night
Clear
Clear
Min: 12°C
 Night
Chance of showers (30%)
Chance of showers
Min: 13°C

Forecast

St. Catharines, ON (Issued: 3:30 PM EDT Tuesday 6 October 2026)

Tonight
A few clouds. Wind becoming southwest 20 km/h gusting to 40 before morning. Low 11.
Wed, 7 Oct
A mix of sun and cloud. 30 percent chance of showers in the morning and late in the afternoon. Wind southwest 30 km/h gusting to 60. High 21. UV index 4 or moderate.
Night
Partly cloudy. 30 percent chance of showers early in the evening. Wind west 20 km/h gusting to 40 becoming light in the evening. Low 11.
Thu, 8 Oct
Sunny. High 18.
Night
Cloudy periods with 30 percent chance of showers. Low 10.
Fri, 9 Oct
A mix of sun and cloud with 30 percent chance of showers. High 18.
Night
Cloudy periods with 30 percent chance of showers. Low 7.
Sat, 10 Oct
Sunny. High 18.
Night
Clear. Low 12.
Sun, 11 Oct
A mix of sun and cloud. High 19.
Night
Cloudy with 30 percent chance of showers. Low 13.
Mon, 12 Oct
Cloudy with 30 percent chance of showers. High 19.

24 Hour Forecast - St. Catharines, ON

Date/Time Temp.
(°C)
Weather Conditions
LOP †		 Wind
(km/h)
6 October 2026
7 PM 15 A few clouds (0%)  A few clouds 0 S 10
8 PM 15 A few clouds (0%)  A few clouds 0 S 10
9 PM 14 A few clouds (0%)  A few clouds 0 S 10
10 PM 14 A few clouds (0%)  A few clouds 0 S 10
11 PM 13 A few clouds (0%)  A few clouds 0 S 10
7 October 2026
12 AM 13 A few clouds (20%)  A few clouds 20 S 10
1 AM 12 A few clouds (20%)  A few clouds 20 S 10
2 AM 12 A few clouds (20%)  A few clouds 20 S 15
3 AM 12 A few clouds (20%)  A few clouds 20 S 15
4 AM 11 A few clouds (20%)  A few clouds 20 S 15
5 AM 11 Partly cloudy (20%)  Partly cloudy 20 SW 20 gust 40
6 AM 12 Chance of showers (30%)  Chance of showers 30 SW 20 gust 40
7 AM 12 Chance of showers (30%)  Chance of showers 30 SW 20 gust 40
8 AM 13 Chance of showers (30%)  Chance of showers 30 SW 30 gust 60
9 AM 14 Chance of showers (30%)  Chance of showers 30 SW 30 gust 60
10 AM 15 Mainly cloudy (20%)  Mainly cloudy 20 SW 30 gust 60
11 AM 16 Mainly cloudy (20%)  Mainly cloudy 20 SW 30 gust 60
12 PM 17 A mix of sun and cloud (20%)  A mix of sun and cloud 20 SW 30 gust 60
1 PM 18 A mix of sun and cloud (20%)  A mix of sun and cloud 20 SW 30 gust 60
2 PM 19 A mix of sun and cloud (20%)  A mix of sun and cloud 20 SW 30 gust 50
3 PM 20 A mix of sun and cloud (20%)  A mix of sun and cloud 20 SW 30 gust 50
4 PM 20 A mix of sun and cloud (20%)  A mix of sun and cloud 20 SW 30 gust 50
5 PM 21 Chance of showers (30%)  Chance of showers 30 W 20 gust 40
6 PM 20 Chance of showers (30%)  Chance of showers 30 W 20 gust 40
 
† 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