Observed at: Montréal-Trudeau Int'l Airport
Date: Tuesday August 21, 2018 at 22:00 EDT
Cloudy
Cloudy
Temperature: 23.6 °C
Humidex: 29
Wind: SE 27 gust 39 km/h
Humidity: 64 %
Dew point: 16.6 °C
Pressure: 100.9 kPa
Tendency: falling
Visibility: 24.1 km
Sunrise: 06:02
Sunset: 19:53
Normals:
Max 24°C Min 13°C
Yesterday
  Max: 27.9 °C
  Min: 14.2 °C
  Rainfall: 0.0 mm

 Extended Forecast - Environment Canada
  Wednesday
A few showers
A few showers
Max: 22°C
Thursday
Sunny
Sunny
Max: 25°C
Friday
Sunny
Sunny
Max: 29°C
Saturday
A mix of sun and cloud
A mix of sun and cloud
Max: 26°C
Sunday
Chance of showers (60%)
Chance of showers
Max: 27°C
Monday
Chance of showers (60%)
Chance of showers
Max: 27°C
Tuesday night
A few showers
A few showers
Min: 20°C
Wednesday night
Clearing
Clearing
Min: 13°C
Thursday night
Clear
Clear
Min: 16°C
Friday night
Clear
Clear
Min: 17°C
Saturday night
Chance of showers (60%)
Chance of showers
Min: 18°C
Sunday night
Chance of showers (60%)
Chance of showers
Min: 20°C

Forecast

Montréal, QC (Issued: Tuesday August 21, 2018 at 15:45 EDT)

Tonight
Increasing cloudiness. A few showers beginning this evening. Risk of a thunderstorm before morning. Wind becoming southeast 20 km/h gusting to 40 early this evening. Low 20.
Wednesday
A few showers ending near noon then cloudy. Risk of a thunderstorm early in the morning. Wind south 20 km/h gusting to 40 becoming west 20 gusting to 40 near noon. High 22. Humidex 30. UV index 4 or moderate.
Wednesday night
Clearing near midnight. Wind west 20 km/h becoming light in the evening. Low 13.
Thursday
Sunny. High 25.
Thursday night
Clear. Low 16.
Friday
Sunny. High 29.
Friday night
Clear. Low 17.
Saturday
A mix of sun and cloud. High 26.
Saturday night
Cloudy with 60 percent chance of showers. Low 18.
Sunday
Cloudy with 60 percent chance of showers. High 27.
Sunday night
Cloudy with 60 percent chance of showers. Low 20.
Monday
A mix of sun and cloud with 60 percent chance of showers. High 27.
Averages and extremes
Highest temperature(1942-2012)32.8 °C1955
Lowest temperature(1942-2012)4.1 °C1982
Average high24.2 °C 
Average low13.8 °C 
Average19.0 °C 
Greatest rainfall(1942-2012)68.8 mm1952
Greatest snowfall(1942-2012)0.0 cm1942
Greatest precipitation(1942-2012)68.8 mm1952
Most snow on the ground(1955-2012)0.0 cm1955
Monthly frequency of precipitation37.0 % 

24 Hour Forecast - Montréal, QC

Date/Time
(EDT)
Temperature
(°C)

Weather Conditions

LOP †
Wind
(km/h)

Humidex
21 August 2018
23:00 23 A few showers (80%)  A few showers High SE 20 gust 40 28
22 August 2018
00:00 23 A few showers (80%)  A few showers High SE 20 gust 40 28
01:00 22 A few showers (80%)  A few showers High SE 20 gust 40 28
02:00 22 A few showers (80%)  A few showers High SE 20 gust 40 28
03:00 21 A few showers (80%)  A few showers High SE 20 gust 40 27
04:00 21 A few showers. Risk of thunderstorms (80%)  A few showers. Risk of thunderstorms High SE 20 gust 40 27
05:00 20 A few showers. Risk of thunderstorms (80%)  A few showers. Risk of thunderstorms High SE 20 gust 40 26
06:00 20 A few showers. Risk of thunderstorms (80%)  A few showers. Risk of thunderstorms High S 20 gust 40 26
07:00 21 A few showers. Risk of thunderstorms (80%)  A few showers. Risk of thunderstorms High S 20 gust 40 28
08:00 21 A few showers. Risk of thunderstorms (80%)  A few showers. Risk of thunderstorms High S 20 gust 40 28
09:00 21 A few showers (80%)  A few showers High S 20 gust 40 28
10:00 22 A few showers (80%)  A few showers High S 20 gust 40 30
11:00 22 A few showers (80%)  A few showers High S 20 gust 40 30
12:00 22 Cloudy (0%)  Cloudy Nil W 20 gust 40 29
13:00 22 Cloudy (0%)  Cloudy Nil W 20 gust 40 28
14:00 22 Cloudy (0%)  Cloudy Nil W 20 gust 40 27
15:00 22 Cloudy (0%)  Cloudy Nil W 20 gust 40 27
16:00 22 Cloudy (0%)  Cloudy Nil W 20 gust 40 26
17:00 22 Cloudy (0%)  Cloudy Nil W 20 gust 40 25
18:00 21 Cloudy (0%)  Cloudy Nil W 20
19:00 20 Cloudy (0%)  Cloudy Nil W 20
20:00 19 Cloudy (10%)  Cloudy Low W 20
21:00 18 Mainly cloudy (10%)  Mainly cloudy Low NW 15
22:00 18 Mainly cloudy (10%)  Mainly cloudy Low NW 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%
‡ Value not significant

Environment Canada