July in Chonas-l'Amballan runs hotter than in 86% of mainland French towns
January nights here settle around 1.5°C. It is a dry place: less rain falls here than on 67% of mainland French towns. Rain follows the seasons: October brings about 3.1 times as much as February. Central heating does most of its work from November to March, in months below 10°C on average.
Figures from Météo-France’s Saint-Désirat Sa station, 23 km south.
A year in Chonas-l'Amballan at a glance
Each month’s typical high and low in °C, at the Saint-Désirat Sa station.
What a year in Chonas-l'Amballan feels like
Typical highs and lows by season and by month, from Météo-France’s 1991–2020 normals at Saint-Désirat Sa.
About 698 mm of rain a year
October is the wettest month and February the driest. About 22 days a year bring 10 mm or more. 111th wettest of 110 towns of 2,500+ in Isère.
Rain by month
Millimeters
Sunshine by month
Hours of sunshine at Lyon-Bron
37 frosts and 90 days of 25°C a year
On about 37 nights a year the air drops to 0°C or below, and on about 4 days it stays below freezing all day. About 90 days a year reach 25°C, and 34 reach 30°C.
Day counts are Météo-France’s 1991–2020 normals at Saint-Désirat Sa: a frost is a night of 0°C or below, a summer day (jour d’été) 25°C or more, a hot day (forte chaleur) 30°C or more.
The Météo-France station at Saint-Désirat Sa
Saint-Désirat Sa is 23 km south of Chonas-l'Amballan. Every figure on this page is the station’s, not a measurement in Chonas-l'Amballan itself.
| Station (Météo-France number) | Saint-Désirat Sa (07228001) |
| Distance from the town | 23 km south |
| Station altitude | 275 m |
| Town altitude (its center) | 267 m |
| Period | 1994–2020 (the station’s own record) |
| Nearest station of any kind | 1.8 km |
| Sunshine measured at | Lyon-Bron, 31 km away |
TownRatings matches each commune to one station with at least 24 years of temperature and rain records: the nearest, counting every 100 m of height difference as 10 km, never across the sea.
How Chonas-l'Amballan compares
Against the 4,385 towns of 2,500 or more in mainland France, each read from its own matched station. The dots are the other towns of 2,500+ in Isère.
Nearby towns’ climate
The nearest towns of 2,500+ within 29 km. Where a neighbor uses the same station its figures are the same: the differences you’d feel over a few kilometers aren’t in the normals.
| Town | Station | July high | January low | Rain a year |
|---|---|---|---|---|
| Chonas-l'Amballan | Saint-Désirat Sa | 28.6°C | 1.5°C | 698 mm |
| Ampuis 3.4 km | Sablons | 30.2°C 1.6°C warmer | 0.7°C 0.8°C colder | 805 mm |
| Condrieu 3.6 km | Sablons | 30.2°C 1.6°C warmer | 0.7°C 0.8°C colder | 805 mm |
| Saint-Clair-du-Rhône 4 km | Sablons | 30.2°C 1.6°C warmer | 0.7°C 0.8°C colder | 805 mm |
| Chavanay 8.2 km | same station | 28.6°C about the same | 1.5°C about the same | 698 mm |
| Saint-Maurice-l'Exil 8.4 km | Sablons | 30.2°C 1.6°C warmer | 0.7°C 0.8°C colder | 805 mm |
| Vienne 8.7 km | Lyon-Bron | 28.2°C about the same | 1.1°C about the same | 821 mm |
Chonas-l'Amballan weather by month
Average daily high and low, mean temperature and rain, 1991–2020, at the Saint-Désirat Sa station; sunshine at Lyon-Bron.
| Month | High | Low | Mean | Rain | Sun (hours) |
|---|---|---|---|---|---|
| January | 7.7°C | 1.5°C | 4.6°C | 45 mm | 71 |
| February | 9.6°C | 1.9°C | 5.7°C | 30 mm | 102 |
| March | 14.2°C | 4.5°C | 9.4°C | 36 mm | 174 |
| April | 17.9°C | 7.5°C | 12.7°C | 54 mm | 198 |
| May | 21.8°C | 11.1°C | 16.5°C | 70 mm | 224 |
| June | 26.1°C | 14.6°C | 20.3°C | 56 mm | 257 |
| July | 28.6°C | 16.5°C | 22.5°C | 57 mm | 288 |
| August | 28.3°C | 16.1°C | 22.2°C | 49 mm | 263 |
| September | 23.6°C | 12.6°C | 18.1°C | 66 mm | 204 |
| October | 18.5°C | 9.7°C | 14.1°C | 94 mm | 131 |
| November | 11.9°C | 5.1°C | 8.5°C | 94 mm | 79 |
| December | 8.2°C | 2.2°C | 5.2°C | 47 mm | 59 |
| Year | 18.0°C | 8.6°C | 13.3°C | 698 mm | 2,050 |
Where Chonas-l'Amballan’s numbers come from
Averages over 30 years, not a forecast.
- Temperature, rain and day counts: Météo-France’s fiche climatologique for Saint-Désirat Sa, 23 km away: statistics for 1991–2020 (the station’s own years, 1994–2020, where its record is shorter).
- Which station: among stations with at least 24 of the 30 years of temperature and rain, the nearest to the commune’s population-weighted center, counting each 100 m of height difference as 10 km; mainland towns use mainland stations and each overseas département its own.
- Altitudes: the town’s from IGN’s RGE ALTI® at its population-weighted center; the station’s from Météo-France.
- Sunshine: the nearest station with at least 10 years of sunshine records, Lyon-Bron, 31 km away.
- Comparisons: every town of 2,500 or more in mainland France, read the same way; the dots are the towns of 2,500+ in Isère.
Météo-France fiches climatologiques · IGN RGE ALTI®. Licence Ouverte 2.0.
Questions about Chonas-l'Amballan’s climate
How warm does Chonas-l'Amballan get in summer?
July is the warmest month, with average highs of 28.6°C. About 90 days a year reach 25°C, more than 82% of mainland French towns, and about 34 reach 30°C.
How cold does Chonas-l'Amballan get in winter?
January nights average 1.5°C. The air drops to 0°C or below on about 37 nights a year, and about 4 days a year stay below freezing all day.
How much rain does Chonas-l'Amballan get?
About 698 mm a year, less than 67% of mainland French towns. October is the wettest month (94 mm) and February the driest (30 mm).
How sunny is it?
The nearest Météo-France station that records sunshine, Lyon-Bron (31 km away), averages 2,050 hours of sunshine a year.
Are these figures for Chonas-l'Amballan itself?
No: they are the normals of the Météo-France station matched to Chonas-l'Amballan, Saint-Désirat Sa, 23 km away. France publishes its climate normals by station, not by commune; a valley, a hill or the sea can make a difference over a few kilometers.
Where do these figures come from?
Météo-France’s fiches climatologiques: 30-year averages (1991–2020) for each of its long-running stations, published as open data since 2024. They are normals, not a forecast.
Source: Météo-France, fiches climatologiques, 1991–2020 statistics (station ST-DESIRAT SA, edited 15/10/2026); altitude: IGN, RGE ALTI®. Licence Ouverte 2.0. Today’s forecast for Chonas-l'Amballan →
Contains public sector information under the Licence Ouverte / Open Licence 2.0 (Etalab): INSEE, DGFiP, the Interior Ministry’s statistics service (SSMSI), the Ministry of Education (DEPP), the Health Ministry’s statistics service (DREES) and the Housing Ministry (Carte des loyers). Commune boundaries: IGN Admin Express.