Saint-Cassien

Isère, Auvergne-Rhône-Alpes, France

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Current Weather

17°

Overcast

Feels Like: 18°

Min: 17°

Max: 21°

The next few hours will be overcast, with today reaching 21°C and dropping to 16°C. The coming days will be mostly cloudy

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Hourly Forecast

17° 17° 17° 17° 17° 17° 17° 19° 20° 21° 21° 21° 21° 21° 21° 21° 20° 19° 18° 17° 17° 16° 16° 16°
42%
46%
46%
46%
3am
4am
5am
6am
7am
8am
9am
10am
11am
12pm
1pm
2pm
3pm
4pm
5pm
6pm
7pm
8pm
9pm
10pm
11pm
12am
1am
2am
Today
Tomorrow

Daylight Hours

07:42

Sunrise

19:11

Sunset

11 hours 29 minutes of sunlight today

Moon

Waning Gibbous

20:55

Moonrise

12:16

Moonset

Daily Forecast

Today

17°
21°

Thursday

14°
18°

Friday

13°
19°

Saturday

14°
22°

Sunday

14°
21°

Monday

14°
19°

Tuesday

12°
21°

Wednesday

14°
23°

Thursday

11°
17°

Friday

6°
13°

Air Quality Data Available

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UV Index

No protection needed
0 Low
Low Extreme

Humidity

67% Comfortable
Low High

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Weather in Saint-Cassien today, September 30, 2026

Rain features in Saint-Cassien on September 30, 2026, so keep waterproofs handy through the day. The damp theme is strongest where shower chances rise. Cloud leads the morning, peaking close to 100% near 07:00. Sunshine has little room until later in the day.

Temperatures climb from an overnight low near 17°C toward a daytime high of about 21°C. The air stays humid, with relative humidity between 48% and 90% and the peak around 23:00. Airflow remains manageable, reaching about 1.4 km/h around 13:00.

Through the afternoon wet weather remains a factor, with rain chances near 42% around 23:00. Cloud also stays substantial, close to 100% near 12:00. Expect visibility near 38.0 km, with poorer spells close to 22.5 km. Expect sunrise at 07:42, sunset at 19:11, and 11 hours 29 minutes of sunlight today overall.

Overall, Saint-Cassien on September 30, 2026 suits indoor plans or waterproof kit, especially while rain chances stay near 42% and the high sits around 21°C.

Frequently asked questions about weather in Saint-Cassien

How warm does it get in Saint-Cassien?

The warmest month in Saint-Cassien 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-Cassien?

The coldest month in Saint-Cassien 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-Cassien?

The wettest month in Saint-Cassien is May, with an average of 156mm of precipitation.

What is the driest time of year in Saint-Cassien?

The driest month in Saint-Cassien is August, with an average of 80mm of precipitation.

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Metric (°C, km/h)