Observed at: Montréal-Trudeau Int'l Airport
Date: Thursday September 20, 2018 at 15:00 EDT
Mostly Cloudy
Mostly Cloudy
Temperature: 16.0 °C
Wind: WNW 4 km/h
Humidity: 69 %
Dew point: 10.3 °C
Pressure: 102.5 kPa
Tendency: rising
Visibility: 24.1 km
Sunrise: 06:39
Sunset: 18:57
Normals:
Max 18°C Min 8°C
Yesterday
  Max: 17.0 °C
  Min: 10.2 °C
  Rainfall: 0.0 mm

 Extended Forecast - Environment Canada
Thursday
Mainly cloudy
Mainly cloudy
Max: 19°C
Friday
Showers
Showers
Max: 23°C
Saturday
Sunny
Sunny
Max: 18°C
Sunday
Periods of rain
Periods of rain
Max: 15°C
Monday
Sunny
Sunny
Max: 15°C
Tuesday
A mix of sun and cloud
A mix of sun and cloud
Max: 18°C
Wednesday
Periods of rain
Periods of rain
Max: 19°C
Thursday night
Rain
Rain
Min: 13°C
Friday night
Showers
Showers
Min: 12°C
Saturday night
Clear
Clear
Min: 8°C
Sunday night
Periods of rain
Periods of rain
Min: 3°C
Monday night
Clear
Clear
Min: 6°C
Tuesday night
Periods of rain
Periods of rain
Min: 14°C
 

Forecast

Montréal, QC (Issued: Thursday September 20, 2018 at 11:30 EDT)

Today
Mainly cloudy. High 19. UV index 5 or moderate.
Tonight
Cloudy. Rain beginning overnight. Low 13.
Friday
Showers ending in the afternoon then cloudy. Risk of thunderstorms in the morning and early in the afternoon. Wind southeast 20 km/h becoming south 40 gusting to 60 in the morning. High 23. Humidex 31. UV index 2 or low.
Friday night
Showers. Windy. Low 12.
Saturday
Sunny. High 18.
Saturday night
Clear. Low 8.
Sunday
Periods of rain. High 15.
Sunday night
Periods of rain. Low plus 3.
Monday
Sunny. High 15.
Monday night
Clear. Low 6.
Tuesday
A mix of sun and cloud. High 18.
Tuesday night
Periods of rain. Low 14.
Wednesday
Periods of rain. High 19.
Averages and extremes
Highest temperature(1941-2012)31.4 °C1983
Lowest temperature(1941-2012)0.2 °C1979
Average high18.6 °C 
Average low8.3 °C 
Average13.5 °C 
Greatest rainfall(1941-2012)25.5 mm1999
Greatest snowfall(1941-2012)0.0 cm1941
Greatest precipitation(1941-2012)25.5 mm1999
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
20 September 2018
16:00 18 Mainly cloudy (0%)  Mainly cloudy Nil SE 15
17:00 19 Mainly cloudy (0%)  Mainly cloudy Nil SE 15
18:00 18 Mainly cloudy (0%)  Mainly cloudy Nil E 15
19:00 17 Mainly cloudy (0%)  Mainly cloudy Nil E 15
20:00 16 Mainly cloudy (0%)  Mainly cloudy Nil E 15
21:00 15 Mainly cloudy (0%)  Mainly cloudy Nil E 15
22:00 15 Mainly cloudy (0%)  Mainly cloudy Nil E 15
23:00 14 Mainly cloudy (0%)  Mainly cloudy Nil E 15
21 September 2018
00:00 14 Mainly cloudy (0%)  Mainly cloudy Nil E 15
01:00 13 Cloudy (0%)  Cloudy Nil E 15
02:00 13 Overcast (0%)  Overcast Nil E 15
03:00 13 Rain (90%)  Rain High E 15
04:00 14 Rain (90%)  Rain High E 15
05:00 14 Rain (90%)  Rain High E 15
06:00 14 Showers. Risk of thunderstorms (90%)  Showers. Risk of thunderstorms High SE 20
07:00 15 Showers. Risk of thunderstorms (90%)  Showers. Risk of thunderstorms High SE 20
08:00 15 Showers. Risk of thunderstorms (90%)  Showers. Risk of thunderstorms High SE 20
09:00 16 Showers. Risk of thunderstorms (90%)  Showers. Risk of thunderstorms High SE 20
10:00 18 Showers. Risk of thunderstorms (90%)  Showers. Risk of thunderstorms High S 40 gust 60
11:00 19 Showers. Risk of thunderstorms (90%)  Showers. Risk of thunderstorms High S 40 gust 60
12:00 19 Showers. Risk of thunderstorms (90%)  Showers. Risk of thunderstorms High S 40 gust 60
13:00 20 Showers. Risk of thunderstorms (90%)  Showers. Risk of thunderstorms High S 40 gust 60 25
14:00 20 Showers. Risk of thunderstorms (90%)  Showers. Risk of thunderstorms High S 40 gust 60 26
15:00 21 Mainly cloudy (0%)  Mainly cloudy Nil S 40 gust 60 28
 
† 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