Tomorrow's Weather Forecast - Montreal

Tomorrow's weather in Montreal. high 16°C (61°F), low 8°C (46°F). Sunny.

Tomorrow’s Outlook

Tomorrow will be 5°C cooler than today. Mild conditions with dry weather expected all day. Humidity holds around 73%, giving the air a damp, heavy feel even without much heat behind it. A light breeze near 17 km/h is expected. Sunrise is at 6:28 AM and sunset at 7:12 PM, for about 12h 45m of daylight.

Tomorrow
16°/ 8°
Today21° / 12°

Tomorrow’s Hourly Weather Outlook

Morning6 AM – Noon10°
Rain probability
0%
Wind speed
14 km/h
AfternoonNoon – 6 PM15°
Rain probability
0%
Wind speed
17 km/h
Evening6 PM – Midn13°
Rain probability
0%
Wind speed
10 km/h
NightMidn – 6 AM10°
Rain probability
0%
Wind speed
14 km/h

24-Hour Rain & Temperature Forecast

Tomorrow11 Sep
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Temperature · peaks at +16°C

Planning Advice for Tomorrow

Clothing
Warm jacket and comfortable layers recommended.
Outdoor
Good conditions for outdoor activities.
Travel
Standard travel conditions expected.

Sunrise & Sunset

Sunrise
Dawn 5:58 AM
Total Daylight
Full day forecastSolar noon 12:50 PM
Sunset
Dusk 7:42 PM
vs today-3 min daylight
Sunrise shift2 min later
Sunset shift2 min earlier

5-Day Weather Forecast

Full 15-Day Forecast
Today10 Sep
Rainy
21°/ 12°
58%
Rain
13–24
Wind
Tomorrow11 Sep
Sunny
16°/ 8°
8–17
Wind
Sat12 Sep
Overcast
23°/ 10°
4%
Rain
6–14
Wind
Sun13 Sep
Thunderstorm
22°/ 17°
46%
Rain
8–17
Wind
Mon14 Sep
Drizzle
18°/ 11°
15%
Rain
5–19
Wind

Weather Insight

Montreal is forecast to reach a high of 16°C tomorrow, with an overnight low around 8°C. That's 7° below the long-term average high of 23°C for this time of year. It continues a recent pattern — 2 of the last 20 days with published data have run cooler than normal. Expect little chance of rain (0% probability) and a gentle breeze averaging 17 km/h. Air quality is currently good (AQI 35), with no notable outdoor health concerns.

Today vs Normal

21°C-2° below normal

The long-term average high for today is 23°C.

2 of the last 20 days with published data ran above normal.

It continues that pattern - today's forecast is also running below normal.

2026-08-19: 24°C24°2026-08-20: 23°C23°2026-08-21: 24°C24°2026-08-22: 26°C26°2026-08-23: 23°C23°2026-08-24: 22°C22°2026-08-25: 23°C23°2026-08-26: 25°C25°2026-08-27: 26°C26°2026-08-28: 22°C22°2026-08-29: 23°C23°2026-08-30: 23°C23°

Red = above normal, blue = at or below · last 12 days

Air Quality

Air Quality
Good

Air quality is considered satisfactory, and air pollution poses little or no risk. It’s a good day to be active outside.