Observed at: St. Catharines / Niagara District Airport
Date: Friday July 19, 2024 at 10:00 EDT
Mainly Sunny
Mainly Sunny
Temp.: 21.2 °C
Humidex: 24
Wind: SW 7 km/h
Humidity: 58 %
Dew point: 12.7 °C
Pressure: 102.2 kPa
Tendency: rising
Visibility: 24.1 km
Sunrise: 05:55
Sunset: 20:51
Normals:
Max 26°C Min 17°C
 Extended Forecast - Environment Canada
Friday
Mainly sunny
Mainly sunny
Max: 25°C
Saturday
Sunny
Sunny
Max: 28°C
Sunday
Chance of showers (30%)
Chance of showers
Max: 25°C
Monday
Chance of showers (30%)
Chance of showers
Max: 25°C
Tuesday
A mix of sun and cloud
A mix of sun and cloud
Max: 25°C
Wednesday
Chance of showers (30%)
Chance of showers
Max: 23°C
Thursday
Chance of showers (30%)
Chance of showers
Max: 24°C
Friday night
Clear
Clear
Min: 16°C
Saturday night
Clear
Clear
Min: 19°C
Sunday night
Clear
Clear
Min: 21°C
Monday night
Cloudy periods
Cloudy periods
Min: 18°C
Tuesday night
Chance of showers (30%)
Chance of showers
Min: 19°C
Wednesday night
Chance of showers (30%)
Chance of showers
Min: 19°C
 

Forecast

St. Catharines, ON (Issued: Friday July 19, 2024 at 05:00 EDT)

Today
Mainly sunny. High 25. Humidex 29. UV index 8 or very high.
Tonight
Clear. Low 16.
Saturday
Sunny. High 28. Humidex 33. UV index 8 or very high.
Saturday night
Clear. Low 19.
Sunday
A mix of sun and cloud with 30 percent chance of showers. High 25.
Sunday night
Clear. Low 21.
Monday
A mix of sun and cloud with 30 percent chance of showers. High 25.
Monday night
Cloudy periods. Low 18.
Tuesday
A mix of sun and cloud. High 25.
Tuesday night
Cloudy periods with 30 percent chance of showers. Low 19.
Wednesday
A mix of sun and cloud with 30 percent chance of showers. High 23.
Wednesday night
Cloudy with 30 percent chance of showers. Low 19.
Thursday
A mix of sun and cloud with 30 percent chance of showers. High 24.

24 Hour Forecast - St. Catharines, ON

Date/Time
(EDT)
Temp.
(°C)

Weather Conditions

LOP †
Wind
(km/h)

Humidex
19 July 2024
11:00 19 Mainly sunny (0%)  Mainly sunny Nil NW 10
12:00 21 Mainly sunny (0%)  Mainly sunny Nil NW 10
13:00 22 Mainly sunny (0%)  Mainly sunny Nil NW 10 25
14:00 24 Sunny (0%)  Sunny Nil VR 5 27
15:00 24 Sunny (0%)  Sunny Nil VR 5 27
16:00 25 Sunny (0%)  Sunny Nil VR 5 28
17:00 25 Sunny (0%)  Sunny Nil VR 5 29
18:00 24 Sunny (0%)  Sunny Nil VR 5 28
19:00 24 Sunny (0%)  Sunny Nil VR 5 28
20:00 23 Sunny (0%)  Sunny Nil SW 10 27
21:00 22 Clear (0%)  Clear Nil SW 10 26
22:00 22 Clear (0%)  Clear Nil SW 10 26
23:00 21 Clear (0%)  Clear Nil SW 10 25
20 July 2024
00:00 20 Clear (0%)  Clear Nil SW 10
01:00 19 Clear (0%)  Clear Nil SW 10
02:00 18 Clear (0%)  Clear Nil SW 10
03:00 17 Clear (0%)  Clear Nil SW 10
04:00 17 Clear (0%)  Clear Nil SW 10
05:00 16 Clear (0%)  Clear Nil VR 5
06:00 17 Sunny (0%)  Sunny Nil VR 5
07:00 18 Sunny (0%)  Sunny Nil VR 5
08:00 19 Sunny (0%)  Sunny Nil VR 5
09:00 20 Sunny (0%)  Sunny Nil VR 5
10:00 20 Sunny (0%)  Sunny Nil VR 5 25
 
† 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%
‡ Value not significant

Environment Canada