Montreal 7-day weather forecast

Written by:
August 18, 2025
ESOlex // Shutterstock

Montreal 7-day weather forecast

Stacker created the forecast for Montreal, Quebec using data from OpenWeather. This week's high is 29 °C on Saturday, while the low is 12 °C on Monday. There is expected to be 1 sunny day and rain on 3 days this week.

There are currently no weather alerts.

Monday, August 18

- High of 26 °C, low of 12 °C (35% humidity)
- Mostly cloudy with a 0% chance of snow
- High risk of harm from sun exposure (7 UV index)
- Light breeze (14 km/h wind)
- Sunrise at 5:58 AM, sunset at 7:57 PM
1 / 6
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Tuesday, August 19

- High of 24 °C, low of 12 °C (37% humidity)
- Overcast with a 0% chance of snow
- Very high risk of harm from sun exposure (7 UV index)
- Light air (8 km/h wind)
- Sunrise at 6:00 AM, sunset at 7:55 PM
2 / 6
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Wednesday, August 20

- High of 17 °C, low of 13 °C (94% humidity)
- Overcast with a 100% chance of rain (9 mm of rain)
- Light air (11 km/h wind)
- Sunrise at 6:01 AM, sunset at 7:54 PM
3 / 6
Piyawat Nandeenopparit // Shutterstock

Thursday, August 21

- High of 25 °C, low of 12 °C (62% humidity)
- Sunny with a 0% chance of snow
- High risk of harm from sun exposure (7 UV index)
- Light air (7 km/h wind)
- Sunrise at 6:02 AM, sunset at 7:52 PM
4 / 6
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Friday, August 22

- High of 27 °C, low of 17 °C (49% humidity)
- Overcast with a 0% chance of snow
- Light air (11 km/h wind)
- Sunrise at 6:03 AM, sunset at 7:50 PM
5 / 6
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Saturday, August 23

- High of 29 °C, low of 18 °C (69% humidity)
- Overcast with a 100% chance of rain (8 mm of rain)
- Light air (12 km/h wind)
- Sunrise at 6:05 AM, sunset at 7:48 PM
- New moon
6 / 6
thaweerat // Shutterstock

Sunday, August 24

- High of 25 °C, low of 18 °C (71% humidity)
- Partly sunny with a 100% chance of rain (8 mm of rain)
- Light breeze (17 km/h wind)
- Sunrise at 6:06 AM, sunset at 7:47 PM

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