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Hourly Forecast
Daylight Hours
07:43
Sunrise
19:45
Sunset
Moon
Waxing Gibbous
17:26
Moonrise
01:13
Moonset
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View stargazing scoreWeather in Pontoise today, September 20, 2026
Cloud cover dominates in Pontoise on September 20, 2026, keeping sunshine limited. Expect a grey, overcast feel rather than long bright spells.
Expect highs of 22°C and cooler readings close to 14°C. Relative humidity sits between 72% and 83%, reaching its peak around 23:00. Expect gentle winds, highest near 17:00 at 2.8 km/h.
The afternoon keeps an overcast feel, as cloud reaches about 90% around 17:00. Outdoor plans may still want a flexible backup. Expect visibility around 16.1 km. Expect sunrise at 07:43, sunset at 19:45, and 12 hours 1 minutes of sunlight today overall.
In short, cloud leads the story in Pontoise on September 20, 2026; expect limited sun and a peak around 22°C.
Frequently asked questions about weather in Pontoise
How warm does it get in Pontoise?
The warmest month in Pontoise 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 Pontoise?
The coldest month in Pontoise 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 Pontoise?
The wettest month in Pontoise is October, with an average of 79mm of precipitation.
What is the driest time of year in Pontoise?
The driest month in Pontoise is July, with an average of 49mm of precipitation.
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