See exactly when rain will start and stop with a minute-by-minute precipitation nowcast for the next hour.
18°
Overcast
Feels Like: 17°
Min: 18°
Max: 24°
The next few hours will be overcast, with today reaching 24°C and dropping to 17°C. The coming days will be partly cloudy
Compare today's weather with yesterday's data and track temperature trends over time.
Hourly Forecast
Daylight Hours
07:42
Sunrise
19:11
Sunset
Moon
Waning Gibbous
20:55
Moonrise
12:16
Moonset
Daily Forecast
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Thursday
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Air Quality Data Available
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View stargazing scoreWeather in Saint-Jean-de-Moirans today, September 30, 2026
Saint-Jean-de-Moirans starts September 30, 2026 looking damp, with rain in the forecast and wetter spells likely at times. Waterproof kit is the safer call for early plans. The morning sky stays heavily clouded, with cover near 100% around 11:00. Grey conditions set the early tone before any later change.
Expect highs of 24°C and cooler readings close to 18°C. The air stays humid, with relative humidity between 40% and 91% and the peak around 23:00. Airflow remains manageable, reaching about 2.5 km/h around 14:00.
Afternoon showers stay in play, peaking near 58% around 20:00. Skies remain cluttered, with cover about 100% by 13:00. Horizontal visibility sits around 36.5 km, briefly nearer 15.5 km. Expect sunrise at 07:42, sunset at 19:11, and 11 hours 29 minutes of sunlight today overall.
Taken together, Saint-Jean-de-Moirans looks wet enough on September 30, 2026 that flexible outdoor plans work best, with temperatures peaking near 24°C.
Frequently asked questions about weather in Saint-Jean-de-Moirans
How warm does it get in Saint-Jean-de-Moirans?
The warmest month in Saint-Jean-de-Moirans is August, with average high temperatures of 27°C. The average temperature during this period is around 21°C.
How cold does it get in Saint-Jean-de-Moirans?
The coldest month in Saint-Jean-de-Moirans is January, with average low temperatures of -1°C. The average temperature during this period is around 3°C.
What is the wettest time of year in Saint-Jean-de-Moirans?
The wettest month in Saint-Jean-de-Moirans is May, with an average of 156mm of precipitation.
What is the driest time of year in Saint-Jean-de-Moirans?
The driest month in Saint-Jean-de-Moirans is August, with an average of 80mm of precipitation.
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