7-day weather forecast for Montreal
7-day weather forecast for Montreal: 4°C, Overcast, Humidity 59%, Wind 17 km/h.
Montreal sits at 45.5° north latitude, in the temperate zone, 76 m above sea level, in the America/Toronto time zone. Over the week ahead highs range from 5° to 16° and lows from 1° to 7°, averaging 8°.
No significant rain is expected over the seven days. Today the sun rises at 07:13 and sets at 18:05: 10:52 of daylight.
| Conditions | high | low | rain | Wind | UV index | |
|---|---|---|---|---|---|---|
| Today | Overcast | 5° | 1° | 1% | 18 km/h | 4 |
| Tomorrow | Mainly clear | 12° | 1° | 2% | 16 km/h | 4 |
| Mon, Oct 19 | Clear sky | 16° | 5° | 0% | 17 km/h | 4 |
| Tue, Oct 20 | Mainly clear | 15° | 7° | 0% | 15 km/h | 4 |
| Wed, Oct 21 | Clear sky | 10° | 3° | 0% | 16 km/h | 4 |
| Thu, Oct 22 | Overcast | 12° | 3° | 1% | 15 km/h | 3 |
| Fri, Oct 23 | Overcast | 12° | 4° | 4% | 12 km/h | 3 |
Weather data by Open-Meteo (ECMWF, GFS, ICON models and national weather services). Updated every 15 minutes.
Weather in Montreal month by month
The table gathers the 2016-2025 climate normals for Montreal: average highs and lows, total rainfall and number of rainy days for each month of the year.
Montreal has an annual mean temperature of 7.7°. The warmest month is July, when highs sit around 26.7°; the coldest is January, with average lows of -12.3°. The 39° gap between those two ends of the calendar is the measure of how much the year swings here.
Rainfall totals about 1,144 mm a year, spread over roughly 142 rainy days. The wettest month is October, averaging 126.2 mm across 12 days; the driest is September, with 69.3 mm.
| Month | Average high | Average low | Rainfall | Rainy days |
|---|---|---|---|---|
| January | -4.3° | -12.3° | 77.9 mm | 12 |
| February | -2.3° | -11.6° | 81.1 mm | 12 |
| March | 3.4° | -5.7° | 84.2 mm | 12 |
| April | 10.8° | 0.8° | 116 mm | 12 |
| May | 18.9° | 8.5° | 81.1 mm | 11 |
| June | 24° | 14.6° | 111.3 mm | 13 |
| July | 26.7° | 18.1° | 105.1 mm | 12 |
| August | 25.4° | 17.2° | 119.2 mm | 12 |
| September | 21.5° | 13.1° | 69.3 mm | 8 |
| October | 14.6° | 7.1° | 126.2 mm | 12 |
| November | 5.6° | -0.8° | 85.5 mm | 13 |
| December | -1° | -8.1° | 87.4 mm | 13 |
When to visit Montreal
For travellers who plan around the weather, May and September tend to be the most comfortable stretch: average highs between 18.9° and 21.5° and rainfall below the yearly average.
What to expect each month
- In January, highs sit near -4.3° and lows near -12.3°, with about 77.9 mm of rain over 12 days.
- In February, highs sit near -2.3° and lows near -11.6°, with about 81.1 mm of rain over 12 days.
- In March, highs sit near 3.4° and lows near -5.7°, with about 84.2 mm of rain over 12 days.
- In April, highs sit near 10.8° and lows near 0.8°, with about 116 mm of rain over 12 days.
- In May, highs sit near 18.9° and lows near 8.5°, with about 81.1 mm of rain over 11 days.
- In June, highs sit near 24° and lows near 14.6°, with about 111.3 mm of rain over 13 days.
- In July, highs sit near 26.7° and lows near 18.1°, with about 105.1 mm of rain over 12 days.
- In August, highs sit near 25.4° and lows near 17.2°, with about 119.2 mm of rain over 12 days.
- In September, highs sit near 21.5° and lows near 13.1°, with about 69.3 mm of rain over 8 days.
- In October, highs sit near 14.6° and lows near 7.1°, with about 126.2 mm of rain over 12 days.
- In November, highs sit near 5.6° and lows near -0.8°, with about 85.5 mm of rain over 13 days.
- In December, highs sit near -1° and lows near -8.1°, with about 87.4 mm of rain over 13 days.
Recorded extremes
Across 2016-2025, the thermometer reached 34.8° at the top of the series and fell to -31.4° at the bottom. These are observed values, not averages: they show what the city has actually faced.
Normals computed from the ERA5 reanalysis (Copernicus/ECMWF), 2016-2025 series.
FAQ
What is the temperature in Montreal right now?
It is 4°C in Montreal right now, with overcast. It feels like -1°C.
Will it rain in Montreal today?
The peak chance of rain today is 1%, with about 0 mm expected.
What will the weather be tomorrow in Montreal?
Tomorrow the high is 12° and the low 1°, with mainly clear.
Where does the data come from and how often is it updated?
Data comes from the ECMWF, GFS and ICON models and national weather services via Open-Meteo, updated every 15 minutes.
What is the warmest month in Montreal?
The warmest month is July, with average highs of 26.7° and lows of 18.1°.
Does it rain a lot in Montreal?
The city gets about 1,144 mm a year over 142 rainy days. The wettest month is October, with 126.2 mm.
When is the best time to visit Montreal?
On weather grounds, May and September combine the most agreeable temperatures with below-average rainfall.