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WeatherLiveQuebecChâteauguay

Châteauguay, QC Weather

Current WeatherChâteauguay · 1:06 AM EDT
23° | 12°
16°C
Feels like 16°
Partly cloudy
WindNE 4 mph · Gusts 10 mph
Precip57% · 0.06 in
Humidity81% · Dew point 13°
UV index6 High
Air Quality35 Good
Pressure30.09 inHg
Visibility6 mi
Sunrise / Sunset6:15 AM · 7:35 PM · 13h 20m

Weather map — Châteauguay

Full radar →
Now
16°
36%
4 mph
02:00
16°
36%
4 mph
03:00
15°
38%
4 mph
04:00
15°
41%
3 mph
05:00
15°
39%
4 mph
06:00
14°
41%
4 mph
07:00
12°
11%
4 mph
08:00
14°
7%
4 mph
09:00
15°
4%
5 mph
10:00
17°
3%
5 mph
11:00
19°
2%
4 mph
12:00
20°
2%
4 mph
13:00
22°
1%
2 mph
14:00
23°
1%
1 mph
15:00
23°
1%
0 mph
16:00
23°
2%
1 mph
17:00
23°
10%
1 mph
18:00
22°
11%
3 mph
19:00
20°
13%
3 mph
20:00
19°
10%
4 mph
21:00
18°
13%
4 mph
22:00
17°
16%
4 mph
23:00
17°
11%
3 mph
00:00
17°
12%
3 mph

Today · Mon 8/31

High 23°
57% / 0.06 in

Sunny. Winds NE at 6 mph.

Overnight · Mon 8/31

Low 12°
36% / 0.01 in

Partly cloudy. Winds NE at 4 mph.

Tomorrow · Tue 9/1

24° | 14°
8% / –

Mostly cloudy. Winds NE at 11 mph.

7-day trend

Châteauguay · temperature + precipitation

10-day forecast

Updated 1:06 AM

Details & indices

Wind
4 mph NE
Gusts 10 mph
Humidity
81%
Dew point 13°
Pressure
30.09 inHg
Rising
UV index
6 — High
High today
Air Quality
Good
AQI 35 · US EPA
Allergy
Moderate
Ragweed
Visibility
6 mi
Clear view
Allergy — Châteauguay

🌿 Conditions right now

View all →
Birch
None
Grass
Moderate
Oak
None
Alder
None
Hazel
None
Mugwort
Moderate
Ragweed
Moderate

Sun & moon

Sunrise6:15 AM
Sunset7:35 PM
Length of day13h 20m
Moonrise8:45 PM
Moonset10:09 AM
Next full moonSep 26 Harvest Moon
Latitude45.3834°N
Longitude-73.7492°E

Water temps nearby

View all →
No beaches within 50 miles
🌤️No rain expected in the next 90 minutes
Now+30+60+90 min
Minute-by-minute precip · HRRR nowcast

Daily planner

computed from today's forecast
Laundry day
Poor
Line-drying weather
Grilling
Fair
Fire up the grill
Running
Poor
Lace up outside
Patio
Fair
Dinner outdoors
Nearby places in {{REGION}}
Montréal
Showers
16°
Québec
Showers
12°
Laval
Showers
16°
Gatineau
Partly cloudy
16°
Longueuil
Showers
16°
🌤️
Saguenay
Data sources · Monday, August 31
Where the Châteauguay forecast comes from
This page blends NOAA/NWS model guidance with global ensembles for the 10-day outlook, air quality and alerts. Data refreshes every hour, current conditions every 15 minutes. Coordinates: 45.3834°N, -73.7492°.
NBM + global weather models
Updated: 1:06 AM
Weather in Châteauguay
Over the next 10 days Châteauguay tops out around 24° (Tuesday) and dips to 12° on the coolest night (Monday). About 1.1 in of precipitation is expected in total; the most likely wet day is Wednesday (90% chance). Hold onto the patio furniture Wednesday: gusts could hit 27 mph. Heads up: 4 NWS alerts are active right now, including a squall — details on the alerts tab. Right now Châteauguay is running about 50° warmer than Québec. Longer view: four full seasons with serious winter and real summer heat.
Châteauguay, QC · Elev 62 ft · 45.38°N, 73.75°W · Quebec · Forecast computed for these exact coordinates
Powered by NWS/NOAA guidance, multi-model forecasts and official environmental feeds · NOAA/NWS · EPA AirNow · MET Norway · global models
Updated: 1:06 AM