Observed at: St. Catharines / Niagara District Airport
Date: Friday April 04, 2025 at 19:00 EDT
Mostly Cloudy
Mostly Cloudy 		Temp.: 8.1 °C
Wind: ENE 17 km/h
Humidity: 53 %
Dew point: -0.9 °C
Pressure: 102.7 kPa
Tendency: falling
Visibility: 24.1 km 		Sunrise: 06:54
Sunset: 19:47
Normals:
Max 9°C Min 1°C
 Extended Forecast - Environment Canada
  Saturday
Rain
Rain
Max: 14°C
 Sunday
Chance of showers (40%)
Chance of showers
Max: 4°C
 Monday
Chance of flurries or rain showers (30%)
Chance of flurries or rain showers
Max: 5°C
 Tuesday
Chance of flurries (30%)
Chance of flurries
Max: -2°C
 Wednesday
A mix of sun and cloud
A mix of sun and cloud
Max: 5°C
 Thursday
Chance of showers (40%)
Chance of showers
Max: 8°C
Friday night
Rain
Rain
Min: 5°C
 Saturday night
Periods of rain
Periods of rain
Min: 2°C
 Sunday night
Cloudy periods
Cloudy periods
Min: -1°C
 Monday night
Chance of flurries or rain showers (40%)
Chance of flurries or rain showers
Min: -5°C
 Tuesday night
Cloudy periods
Cloudy periods
Min: -2°C
 Wednesday night
Cloudy periods
Cloudy periods
Min: 3°C

Forecast

St. Catharines, ON (Issued: Friday April 04, 2025 at 15:30 EDT)

Tonight
Increasing cloudiness. Rain beginning after midnight. Amount 5 to 10 mm. Wind becoming east 20 km/h gusting to 40 near midnight. Low plus 5.
Saturday
Rain. Risk of a thunderstorm in the morning. Amount 10 to 20 mm. Wind east 20 km/h gusting to 40 becoming southwest 30 gusting to 50 near noon. High 14. UV index 1 or low.
Saturday night
Periods of rain ending after midnight then cloudy. Wind northwest 20 km/h. Low plus 2.
Sunday
A mix of sun and cloud with 40 percent chance of showers. High plus 4.
Sunday night
Cloudy periods. Low minus 1.
Monday
A mix of sun and cloud with 30 percent chance of flurries or rain showers. High plus 5.
Monday night
Cloudy with 40 percent chance of flurries or rain showers. Windy. Low minus 5.
Tuesday
Cloudy with 30 percent chance of flurries. High minus 2.
Tuesday night
Cloudy periods. Low minus 2.
Wednesday
A mix of sun and cloud. High plus 5.
Wednesday night
Cloudy periods. Low plus 3.
Thursday
Cloudy with 40 percent chance of showers. High 8.

24 Hour Forecast - St. Catharines, ON

Date/Time
(EDT)		 Temp.
(°C)
Weather Conditions
LOP †		 Wind
(km/h)
4 April 2025
20:00 7 Cloudy (0%)  Cloudy Nil NE 15
21:00 6 Cloudy (20%)  Cloudy Low NE 15
22:00 6 Partly cloudy (20%)  Partly cloudy Low NE 15
23:00 5 Partly cloudy (20%)  Partly cloudy Low NE 15
5 April 2025
00:00 5 Mainly cloudy (20%)  Mainly cloudy Low E 20 gust 40
01:00 5 Cloudy (20%)  Cloudy Low E 20 gust 40
02:00 5 Rain (100%)  Rain High E 20 gust 40
03:00 5 Rain (100%)  Rain High E 20 gust 40
04:00 6 Rain (100%)  Rain High E 20 gust 40
05:00 6 Rain (100%)  Rain High E 20 gust 40
06:00 6 Rain. Risk of thunderstorms (100%)  Rain. Risk of thunderstorms High E 20 gust 40
07:00 7 Rain. Risk of thunderstorms (100%)  Rain. Risk of thunderstorms High E 20 gust 40
08:00 7 Rain. Risk of thunderstorms (100%)  Rain. Risk of thunderstorms High E 20 gust 40
09:00 8 Rain. Risk of thunderstorms (100%)  Rain. Risk of thunderstorms High E 20 gust 40
10:00 10 Rain. Risk of thunderstorms (100%)  Rain. Risk of thunderstorms High E 20 gust 40
11:00 11 Rain. Risk of thunderstorms (100%)  Rain. Risk of thunderstorms High E 20 gust 40
12:00 12 Rain (100%)  Rain High SW 30 gust 50
13:00 13 Rain (100%)  Rain High SW 30 gust 50
14:00 14 Rain (100%)  Rain High SW 30 gust 50
15:00 14 Rain (100%)  Rain High SW 30 gust 50
16:00 14 Periods of rain (80%)  Periods of rain High SW 30 gust 50
17:00 14 Periods of rain (80%)  Periods of rain High SW 30 gust 50
18:00 13 Periods of rain (80%)  Periods of rain High NW 20
19:00 12 Periods of rain (80%)  Periods of rain High NW 20
 
† 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