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Hourly Forecast
Daylight Hours
07:42
Sunrise
19:44
Sunset
Moon
Waxing Gibbous
17:25
Moonrise
01:13
Moonset
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View stargazing scoreWeather in Argenteuil tomorrow, September 21, 2026
Argenteuil starts September 21, 2026 under largely sunny skies, with bright spells setting the tone from the outset. Outdoor plans should enjoy long stretches of open sky as the day unfolds. Expect a grey start, with morning cloud around 100% by 05:00. Outdoor plans early on should not rely on bright skies.
The day peaks near 23°C and cools toward 12°C. Moisture in the air spans 37%-93%, with the highest values around 08:00. Winds stay light, near 2.3 km/h by 18:00, so the day feels still more than breezy.
Through the afternoon cloud remains the main feature, with cover near 100% around 12:00. Bright spells should stay limited even as the day wears on. Horizontal visibility sits around 32.3 km, briefly nearer 18.1 km. Daylight runs from 07:44 to 19:42, lasting 11 hours 58 minutes of sunlight today.
The practical takeaway for Argenteuil is a bright September 21, 2026, ideal for outdoor errands before temperatures ease from about 23°C.
Frequently asked questions about weather in Argenteuil
How warm does it get in Argenteuil?
The warmest month in Argenteuil is July, with average high temperatures of 25°C. The average temperature during this period is around 20°C.
How cold does it get in Argenteuil?
The coldest month in Argenteuil is January, with average low temperatures of 2°C. The average temperature during this period is around 5°C.
What is the wettest time of year in Argenteuil?
The wettest month in Argenteuil is October, with an average of 80mm of precipitation.
What is the driest time of year in Argenteuil?
The driest month in Argenteuil is July, with an average of 50mm of precipitation.
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