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Montreal weather

Quebec · 1,762,949 inhabitants · Thursday, October 29 · updated 12:56

Air: Poor

3°

Clear sky

Feels like 1°C

Wind

11 km/h

Gusts

16 km/h

Humidity

91 %

Pressure

1020 hPa

Clouds

1 %

Storm

Rise 07:29 Set 17:46 Day 10 h 16 min UV 4 · Moderate

Morning, afternoon, evening

Trend

Afternoon

Overcast

19°18°

Feels like 19°

Wind ↑ WSW 24 km/h

Gusts 53 km/h

Humidity 56 %

Evening

Light rain

17°15°

Feels like 17°

Wind ↑ SW 20 km/h

Gusts 56 km/h

Humidity 71 %

💧 1.7 mm

14:00

19°

SSW 17

17:00

18°

WSW 24

Montreal forecast in charts · next 7 days

The week ahead: highs and lows

▲ This week runs +5.9° warmer than usual

Highs Lows Usual for the season (1991–2020 average)

Hourly detail

Temperature (°C) Rain (mm) Wind (km/h)

Montreal climate: what a normal year looks like

Nights typically freeze from November to March, the coldest averaging −13 °C in January.

The hottest stretch is July, when afternoons average 26 °C; the coldest is January, when nights average −13 °C. Between those two months the average temperature changes by 31 °C.

From 15 h 41 min of daylight in late June to 8 h 42 min in late December.

There is no real dry season: monthly rainfall stays between 66 mm and 114 mm on average.

Forecast highs for the coming week average 16 °C, 3 °C warmer than a normal October (13 °C).

30-year averages (1991–2020)
Month	Typical high	Typical low	Rainfall
Jan	−5 °C	−13 °C	80 mm
Feb	−3 °C	−12 °C	66 mm
Mar	2 °C	−6 °C	78 mm
Apr	10 °C	1 °C	106 mm
May	19 °C	9 °C	101 mm
Jun	24 °C	14 °C	108 mm
Jul	27 °C	17 °C	100 mm
Aug	25 °C	16 °C	103 mm
Sep	21 °C	12 °C	98 mm
Oct	13 °C	6 °C	114 mm
Nov	6 °C	−1 °C	92 mm
Dec	−1 °C	−8 °C	92 mm
Whole year	12 °C	3 °C	1,140 mm

Source: our own processing of the ERA5 reanalysis (Copernicus/ECMWF) for 45.51° N, 73.59° W, 1991–2020. ERA5 averages over a 0.25° grid (about 25 km): hills, a coastline or the heat of the city itself can shift local values by a degree or two.

Air you breathe in Montreal: pollution and pollen

4/6

Poor

European Air Quality Index (EAQI), from Copernicus CAMS

PM2.535µg/m³

PM1035µg/m³

Copernicus CAMS model, updated several times a day.

Rain radar around Montreal

Rain observed over the last two hours by official weather radars around Montreal, followed by the radar forecast for the next hour where the weather service provides one.

Rain radar Last two hours, then forecast where available · drag the timeline

Moon over Montreal

Waning gibbous

87 % illuminated · 18.3 days

Rise 15:47 Set 08:00

Fri 30/10 79%

Sat 31/10 69%

Sun 1/11 59%

Mon 2/11 49% Last quarter

Tue 3/11 38%

Wed 4/11 28%

Thu 5/11 19%

Fri 6/11 12%

Sat 7/11 6%

Sun 8/11 2%

Mon 9/11 0%

Tue 10/11 1% New moon

Moonrise and moonset in local time (America/Toronto); phase and lit fraction from a synodic calculation.

Look up a past day in Montreal

Curious about the weather in Montreal on a given day? Choose a date: we read it from the ERA5 reanalysis (ECMWF / Copernicus C3S), which runs until about a week ago.

Montreal weather at a glance

This page gathers everything about the weather in Montreal, Quebec: conditions now, the forecast for each part of the day and the trend for the coming week. At the moment the sky is “clear sky”, it is 3 °C (feels like 1 °C) and the wind blows at 11 km/h.

Expected range today: 3 °C to 19 °C and a dry sky. The forecast comes from the AtmoAtlas engine, which combines ECMWF-AIFS, NOAA GFS and DWD ICON, adjusts cloud cover with METAR reports and uses convective energy (CAPE) to flag storms.

Other big cities nearby

Montreal weather data for developers

Use the Montreal forecast in your own website or app: one JSON call returns weather, air quality, tides and sun and moon times. The free key needs no card.

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Where does this forecast come from? Our engine, checked every day against 1125 weather stations