🇨🇦 Weather in Saint-Jean-sur-Richelieu
Map Overlays:
Hourly Forecast for Saint-Jean-sur-Richelieu
10:00
19°
50%
11:00
21°
36%
12:00
22°
36%
13:00
22°
36%
14:00
22°
36%
15:00
22°
36%
16:00
21°
39%
17:00
21°
17%
18:00
20°
7%
19:00
19°
24%
20:00
17°
31%
21:00
16°
41%
22:00
16°
42%
23:00
16°
40%
00:00
16°
27%
01:00
14°
16%
02:00
14°
16%
03:00
13°
42%
04:00
13°
42%
05:00
12°
42%
06:00
12°
42%
07:00
14°
20%
08:00
15°
15%
09:00
17°
14%
14-Day Forecast for Saint-Jean-sur-Richelieu
2026-08-25
Patchy rain nearby
22° /
15°
2026-08-26
Sunny
23° /
12°
2026-08-27
Overcast
27° /
15°
2026-08-28
Patchy rain nearby
22° /
15°
2026-08-29
Sunny
21° /
8°
2026-08-30
Overcast
24° /
13°
2026-08-31
Overcast
18° /
9°
Additional Forecasts for Saint-Jean-sur-Richelieu
Air Quality
💨 US EPA Index 1 (Good)
CO (Carbon Monoxide) 163.0 μg/m³
O₃ (Ozone) 44.0 μg/m³
NO₂ (Nitrogen Dioxide) 5.4 μg/m³
SO₂ (Sulphur Dioxide) 1.8 μg/m³
PM2.5 (Fine particles) 1.8 μg/m³
PM10 (Coarse particles) 1.8 μg/m³
Historical Weather
Weather Forecasts for Other Cities in Canada
Weather in Saint-Jean-sur-Richelieu — FAQ
Answers refreshed each request based on current conditions in Saint-Jean-sur-Richelieu.
What is the weather like right now in Saint-Jean-sur-Richelieu?
Right now in Saint-Jean-sur-Richelieu, Canada the temperature is 17.8°C (feels like 17.3°C), with light drizzle. Relative humidity is 88% and wind is 12.6 km/h.
What is today's high and low temperature in Saint-Jean-sur-Richelieu?
Today's forecast high in Saint-Jean-sur-Richelieu is 22.1°C and the overnight low is 14.7°C. The diurnal range — high minus low — depends on cloud cover; clear days swing more than overcast ones.
Will it rain in Saint-Jean-sur-Richelieu today?
The chance of precipitation in Saint-Jean-sur-Richelieu today is 79%. Forecast accuracy is highest within the next 6 hours and decreases steadily out to 14 days.
How often does the weather here update?
Current observations refresh every 15-60 minutes from the nearest monitoring stations operated by national meteorological agencies. The hourly forecast updates approximately every hour; the 7- and 14-day outlook is recomputed several times per day.
What does 'feels like' temperature mean?
Feels-like (apparent) temperature accounts for humidity, wind chill and direct sunshine — variables that change how the human body perceives heat or cold. On hot, humid days it can be 3-7°C above the actual reading; on cold windy days it can be 5-15°C below.
Why does the temperature in Saint-Jean-sur-Richelieu differ from nearby cities?
Even short distances can change temperatures noticeably. Saint-Jean-sur-Richelieu's reading reflects altitude, proximity to large bodies of water, urban heat island effects, and the exact location of the monitoring stations supplying the data. Coastal cities are typically milder and more humid than inland equivalents.