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WeatherLive › Quebec › Saint-Jean-sur-Richelieu

Saint-Jean-sur-Richelieu, QC Weather

Today Hourly 10-Day Weekend Monthly Radar Air Quality Climate
Current WeatherSaint-Jean-sur-Richelieu · 2:42 PM EDT
21° | 14°
21°C
Feels like 19°
Mostly cloudy
WindNE 12 mph · Gusts 14 mph
Precip20% · –
Humidity72% · Dew point 15°
UV index4 Moderate
Air Quality39 Good
Pressure29.94 inHg
Visibility6 mi
Sunrise / Sunset6:19 AM · 7:23 PM · 13h 4m

Weather map — Saint-Jean-sur-Richelieu

Full radar →
Now
21°
14%
12 mph
15:00
20°
20%
11 mph
16:00
20°
20%
12 mph
17:00
17°
13%
11 mph
18:00
16°
26%
11 mph
19:00
15°
26%
8 mph
20:00
15°
25%
8 mph
21:00
15°
22%
12 mph
22:00
14°
22%
15 mph
23:00
14°
25%
13 mph
00:00
12°
37%
11 mph
01:00
11°
15%
8 mph
02:00
10°
15%
8 mph
03:00
10°
15%
8 mph
04:00
9°
19%
8 mph
05:00
9°
15%
7 mph
06:00
9°
15%
7 mph
07:00
9°
15%
6 mph
08:00
11°
11%
7 mph
09:00
14°
9%
7 mph
10:00
15°
8%
6 mph
11:00
15°
8%
8 mph
12:00
18°
13%
6 mph
13:00
18°
4%
5 mph

Today · Sat 9/5

High 21°
20% / –

Mostly cloudy. Winds NE at 15 mph.

Tonight · Sat 9/5

Low 9°
22% / –

Mostly cloudy. Winds N at 12 mph.

Tomorrow · Sun 9/6

21° | 9°
17% / –

Sunny. Winds NE at 11 mph.

7-day trend

Saint-Jean-sur-Richelieu · temperature + precipitation

10-day forecast

Updated 2:42 PM

Details & indices

Wind
12 mph NE
Gusts 14 mph
Humidity
72%
Dew point 15°
Pressure
29.94 inHg
Rising
UV index
4 — Moderate
High today
Air Quality
Good
AQI 39 · US EPA
Allergy
Very high
Ragweed
Visibility
6 mi
Clear view
Allergy — Saint-Jean-sur-Richelieu

🌿 Conditions right now

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Birch
None
Grass
Moderate
Oak
None
Alder
None
Hazel
None
Mugwort
Moderate
Ragweed
High

Sun & moon

Sunrise6:19 AM
Sunset7:23 PM
Length of day13h 4m
Moonrise—
Moonset4:16 PM
Moon phase🌗 Last Quarter · 34%
Next full moonSep 26 Harvest Moon
Latitude45.3071°N
Longitude-73.2626°E

Water temps nearby

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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
Fair
Line-drying weather
Grilling
Great
Fire up the grill
Running
Great
Lace up outside
Patio
Fair
Dinner outdoors
Nearby places in {{REGION}}
Montréal
Partly cloudy
18°
Québec
Partly cloudy
18°
Laval
Partly cloudy
18°
Gatineau
Partly cloudy
22°
Longueuil
Partly cloudy
19° 🌤️
Saguenay
—
—
Data sources · Saturday, September 5
Where the Saint-Jean-sur-Richelieu 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: 45.3071°N, -73.2626°.
NBM + global weather models
Updated: 2:42 PM
Weather in Saint-Jean-sur-Richelieu
The 10-day span for Saint-Jean-sur-Richelieu runs from a high near 23° on Monday down to 5° overnight on Friday. Models drop roughly 1.5 in of precipitation across the stretch — watch Wednesday (90%). Wind is the one to watch: gusts to 39 mph around Thursday. No watches or warnings are active for the area right now. Right now Saint-Jean-sur-Richelieu is running about 52° warmer than Trois-Rivières. Longer view: four full seasons with serious winter and real summer heat.
Saint-Jean-sur-Richelieu, QC · Elev 105 ft · 45.31°N, 73.26°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: 2:42 PM