No watches or warnings in effect for Mont-Royal, QC.

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METRIC | IMPERIAL
Updated: 08/24/2026 @ 23:30 EDT   (0 sec ago)
Temperature Current Conditions Forecast / Storm Prediction
Currently Outside: Colder 0.2°C than last hour.

18.7°C

Wind Chill:  18.7°C
Comfortable
High Today
22.6°C
11:41
Low Today
16.0°C
13:36
Yest High
22.6°C
14:53
Yest Low
16.8°C
17:33
Sta* High
33.1°C
2021
Sta* Low
13.6°C
2019
* This Station's Records Since 9/2017
Rec* High
6.0°C
2013
Rec* Low
-21.0°C
2005
* Records from Weather Underground
Night time, Dry, Mostly cloudy Night time, Dry, Mostly cloudy

Wind from WSW Wind:  WSW
5.3

Gusting to:
1.6 km/h
Current Rain Rain:
8.0 mm
Tonight
Chance of showers (60%)
Chance of showers
Tue, 25 Aug
Chance of showers (40%)
Chance of showers
Night
Chance of showers (40%)
Chance of showers
Min: 16°C
Max: 23°C
Min: 15°C
SPC Activity Map
Dew Point Liquid Precipitation Wind Speed Sun/Moon
Current: Decreased 0.2°C since last hour. 15.3°C
Last Hour: Decreased 0.2°C since last hour. -0.2°C
High 15:20: 16.9°C
Low 13:11: 13.1°C
Record High: 26.8°C on
1-Jul-2026
Record Low: -34.0°C on
4-Feb-2023
Wetbulb: 16.7°C
Today: 8.00 mm
Storm Rain: 36.8 mm
Yesterday: 28.80 mm
Last 7 Days: 77.00 mm
Aug Rain: 165.80 mm
Aug to Date
  Avg:10
76.07 mm
Aug to Date
  Diff from Avg:10
Over 89.73 mm for the month 89.73 mm
Aug Avg: 98.30 mm
Diff from Avg: Over 67.5 mm for the month 67.50 mm
Season:1 827.4 mm
YTD
  Avg:11
560.57 mm
YTD
  Diff from Avg:11
Over 266.83 mm for the year 266.83 mm
Last Rain
Time/Date:
24-Aug-2026
at 19:02
104 rain days in 2026
13 days in August
0 days since last rain
Current: WSW  5.3 km/h
1Hr Average: 2.4 km/h
Wind Run: 103.29 miles
Wind Gust
Current: 1.6 km/h
Today: 24.1 km/h 01:36
Month: 56.3 km/h 23-Aug
Year: 70.9 km/h 17-Mar
Record Gust: 88.8 km/h
1-Nov-2019
Sunlight:
13 h 43 m 31 s
of Sunlight Yesterday
13 h 40 m 33 s
of Sunlight Today
Which is
2 min 58 sec shorter than
yesterday
13 h 37 m 34 s
of Sunlight Tomorrow
(Noon ?>) graph (Midnight
Legend

Waxing Gibbous
Waxing Gibbous, 12 days, 9 hours, 55 minutes in cycle
92%
Illuminated
Humidity Barometer
Current: No Change 81%
Last Hour: No Change 0%
High 14:28: 90%
Low 11:45: 64%
Record High: 98%
12-Jan-2018
Record Low: 13%
24-Apr-2020
Current: Falling 0.2  mb/hr 1011.9 mb
Last Hour: Steady
High 21:24: 1012.3
Low 01:31: 1008.3
Record High: 1050.3 mb
14-Dec-2024
Record Low: 972.5 mb
23-Dec-2022
Heating Degree Days Coming Soon Wind Chill
Today: 0.3
Aug: 0.3
2026 to Date: 2594.3
Cooling Degree Days
2026 to Date: 352.6
Current: 18.7°C
Low 06:42: 15.9°C
Yesterday: 16.7°C
Record: -43.7°C
4-Feb-2023
UV Summary/Forecast Solar Summary
High Today:   2.6 @ 14:29
Aug-25

5.9
Aug-26

5.9
Aug-27

6.3
High Today:  
821 W/m2 @ 11:37
Sun Hours Today:
04:47
   This Month: 96:52 Hrs
Rise: 06:08  Set: 19:45
Almanac Irrigation Index5 Station All Time Records Cloud Level
Currently: Evening
YTD Avg Temp: 8.8°C
Sunrise: 06:08
Sunset: 19:45
Moonrise: 18:53
Moonset: 03:02
Full Moon: 31-Dec-1969
New Moon: 03:28 UTC
31-Dec-1969
Updated at Midnight
Current ET: 2.50 mm
7-Days Rain: 77.00 mm
7-Days ET: 19.20 mm
7-Day:  57.8 mm water in excess of what evaporated in last 7 days. 57.8 mm
August:  93.7 mm water in excess of what evaporated this month. 93.7 mm
HIGHS: LOWS:
37.2°C
27-May-2020
-29.0°C
4-Feb-2023
Daytime Records
  35.2°C°C
01-Jun-2023
  -25.6°C°C
03-Feb-2023
Nitetime Records
  29.2°C°C
06-Jul-2018
  -27.0°C°C
04-Feb-2023
ICN:1 | S3C2:0 | Ajax 3.xx
ISS:Ok | CON:3.7 | RCP:99%
1 Rain season: Jan 1st to Dec 31st.   2 Snow season July 1st to June 30th.   3 Snow manually measured usually around 7AM and 7PM.   5 Estimated amount of water needed to replace the water used by plants and evaporation from the past week. (Negative numbers mean amount of water needed, positive numbers mean excess water is present).   10 Historical average only to day 24 of just the month of August for this station since 2018.   11 Historical average rain this season to day 24 of August for this station since 2018.
 EC Weather Forecast  -   Outlook Tonight & Tue, 25 Aug
Tonight
Chance of showers (60%)
Chance of showers
Min: 16°C
EC forecast: Mainly cloudy with 60 percent chance of showers. Risk of a thunderstorm early this evening. Low 16.
Local station forecast: Increasing clouds with little temp change.
Tue, 25 Aug
Chance of showers (40%)
Chance of showers
Max: 23°C
EC forecast: A mix of sun and cloud with 40 percent chance of showers. Wind becoming west 20 km/h near noon. High 23. Humidex 28. UV index 6 or high.
 EC Short Term Weather Forecast
Night
Chance of showers (40%)
Chance of showers
Wed, 26 Aug
Sunny
Sunny
Night
Clear
Clear
Thu, 27 Aug
Chance of showers (60%)
Chance of showers
Night
Showers
Showers
Fri, 28 Aug
Cloudy
Cloudy
Night
Clear
Clear
Min: 15°C
Max: 26°C
Min: 17°C
Max: 26°C
Min: 19°C
Max: 22°C
Min: 11°C
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