See exactly when rain will start and stop with a minute-by-minute precipitation nowcast for the next hour.
20°
Overcast
Feels Like: 19°
Min: 19°
Max: 23°
The next few hours will be overcast, with today reaching 23°C and dropping to 16°C. The coming days will be mostly clear
Compare today's weather with yesterday's data and track temperature trends over time.
Hourly Forecast
Daylight Hours
07:57
Sunrise
19:22
Sunset
Moon
Waning Gibbous
20:53
Moonrise
12:45
Moonset
Daily Forecast
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View stargazing scoreWeather in Saint-Germain-lès-Arpajon today, September 30, 2026
Expect unsettled, showery conditions in Saint-Germain-lès-Arpajon on September 30, 2026 as rain moves through. The day opens on a wet note and needs flexible outdoor plans. The morning carries the wetter risk, with rain chances near 28% and the highest odds around 09:00. Cloud is also thick early on, peaking near 100% around 06:00.
The temperature range runs from about 19°C up to 23°C. Expect humidity between 68% and 95%, most humid near 21:00. A lighter breeze peaks around 23:00 near 5.4 km/h.
Through the afternoon wet weather remains a factor, with rain chances near 98% around 18:00. Cloud also stays substantial, close to 100% near 12:00. Horizontal visibility sits around 26.2 km, briefly nearer 9.7 km. Expect sunrise at 07:57, sunset at 19:22, and 11 hours 25 minutes of sunlight today overall.
In short, treat September 30, 2026 in Saint-Germain-lès-Arpajon as a damp day: pack covers, watch the wetter hours, and expect a high near 23°C.
Frequently asked questions about weather in Saint-Germain-lès-Arpajon
How warm does it get in Saint-Germain-lès-Arpajon?
The warmest month in Saint-Germain-lès-Arpajon is July, with average high temperatures of 26°C. The average temperature during this period is around 21°C.
How cold does it get in Saint-Germain-lès-Arpajon?
The coldest month in Saint-Germain-lès-Arpajon 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 Saint-Germain-lès-Arpajon?
The wettest month in Saint-Germain-lès-Arpajon is October, with an average of 80mm of precipitation.
What is the driest time of year in Saint-Germain-lès-Arpajon?
The driest month in Saint-Germain-lès-Arpajon is July, with an average of 45mm of precipitation.
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