See exactly when rain will start and stop with a minute-by-minute precipitation nowcast for the next hour.
Compare today's weather with yesterday's data and track temperature trends over time.
Hourly Forecast
Daylight Hours
07:41
Sunrise
19:09
Sunset
Moon
Waning Gibbous
20:50
Moonrise
12:18
Moonset
Daily Forecast
Today
Thursday
Friday
Saturday
Sunday
Monday
Tuesday
Wednesday
Thursday
Friday
Air Quality Data Available
Upgrade to access real-time air quality data for Sergy.
Resources
UV Index
Humidity
Current stargazing conditions?
See sky darkness, moon phase, and the best viewing window for Sergy.
View stargazing scoreWeather in Sergy today, September 30, 2026
Sergy stays under cloudy skies on September 30, 2026, with only brief brighter breaks. Plan for a day that feels grey more often than open.
The temperature range runs from about 18°C up to 24°C. Relative humidity sits between 41% and 58%, reaching its peak around 23:00. Airflow remains manageable, reaching about 2.5 km/h around 16:00.
Afternoon skies stay clogged, peaking close to 100% near 17:00. The grey theme continues rather than clearing out. Visibility holds near 41.8 km, though it can fall to 40.5 km. Expect sunrise at 07:41, sunset at 19:09, and 11 hours 28 minutes of sunlight today overall.
The practical takeaway for Sergy on September 30, 2026 is a cloudy day that stays usable, just not particularly bright, around 24°C.
Frequently asked questions about weather in Sergy
How warm does it get in Sergy?
The warmest month in Sergy is August, with average high temperatures of 25°C. The average temperature during this period is around 19°C.
How cold does it get in Sergy?
The coldest month in Sergy is January, with average low temperatures of -1°C. The average temperature during this period is around 2°C.
What is the wettest time of year in Sergy?
The wettest month in Sergy is December, with an average of 170mm of precipitation.
What is the driest time of year in Sergy?
The driest month in Sergy is February, with an average of 100mm of precipitation.
Explore more weather forecasts
- Saint-Julien-en-Genevois, Auvergne-Rhône-Alpes
- Paris, Île-de-France
- Gaillard, Auvergne-Rhône-Alpes
- Marseille, Provence-Alpes-Côte d'Azur
- Annemasse, Auvergne-Rhône-Alpes
- Lyon, Auvergne-Rhône-Alpes
- Bellegarde-sur-Valserine, Auvergne-Rhône-Alpes
- Toulouse, Occitanie
- Oyonnax, Auvergne-Rhône-Alpes
- Nice, Provence-Alpes-Côte d'Azur
- La Roche-sur-Foron, Auvergne-Rhône-Alpes
- Nantes, Pays de la Loire
- Bonneville, Auvergne-Rhône-Alpes
- Marne La Vallée, Île-de-France
- Annecy-le-Vieux, Auvergne-Rhône-Alpes
- Strasbourg, Grand Est
