Hardly any mainland French towns collect more rain than Annoisin-Chatelans: 1,512 mm a year
The coldest hours of a January night bottom out at −0.7°C on average. November is the wettest month, August the driest. About 76 nights a year bring a frost, more than in 93% of mainland French towns. Gritters and ice scrapers earn their keep on roughly 76 nights a year below 0°C.
These are the figures of Météo-France’s Saint-Rambert-en-Bugey station, 22 km north-east.
A year in Annoisin-Chatelans at a glance
Each month’s typical high and low in °C, at the Saint-Rambert-en-Bugey station.
What a year in Annoisin-Chatelans feels like
Typical highs and lows by season and by month, from Météo-France’s 1991–2020 normals at Saint-Rambert-en-Bugey.
About 1,512 mm of rain a year
November is the wettest month and August the driest. About 52 days a year bring 10 mm or more. The wettest of 110 towns of 2,500+ in Isère.
Rain by month
Millimeters
Sunshine by month
Hours of sunshine at Lyon-Saint-Exupery
A frosty town: 76 frosts and 81 days of 25°C a year
On about 76 nights a year the air drops to 0°C or below, and on about 7 days it stays below freezing all day. About 81 days a year reach 25°C, and 28 reach 30°C.
Day counts are Météo-France’s 1991–2020 normals at Saint-Rambert-en-Bugey: 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-Rambert-en-Bugey
Saint-Rambert-en-Bugey is 22 km north-east of Annoisin-Chatelans. Every figure on this page is the station’s, not a measurement in Annoisin-Chatelans itself.
| Station (Météo-France number) | Saint-Rambert-en-Bugey (01384001) |
| Distance from the town | 22 km north-east |
| Station altitude | 287 m |
| Town altitude (its center) | 424 m |
| Period | 1991–2020 |
| Nearest station of any kind | 14 km |
| Sunshine measured at | Lyon-Saint-Exupery, 17 km away |
Annoisin-Chatelans sits 137 m higher than the station. Air usually cools by about 0.65°C every 100 m, so expect Annoisin-Chatelans to run about 0.9°C cooler than these figures.
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 Annoisin-Chatelans 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, each with its own matched station.
| Town | Station | July high | January low | Rain a year |
|---|---|---|---|---|
| Annoisin-Chatelans | Saint-Rambert-en-Bugey | 27.6°C | −0.7°C | 1,512 mm |
| Crémieu 5.1 km | Lyon-Saint-Exupery | 27.5°C about the same | 1.1°C 1.8°C milder | 863 mm |
| Saint-Romain-de-Jalionas 5.8 km | Lyon-Saint-Exupery | 27.5°C about the same | 1.1°C 1.8°C milder | 863 mm |
| Loyettes 6.9 km | Lyon-Saint-Exupery | 27.5°C about the same | 1.1°C 1.8°C milder | 863 mm |
| Chavanoz 8.7 km | Lyon-Saint-Exupery | 27.5°C about the same | 1.1°C 1.8°C milder | 863 mm |
| Tignieu-Jameyzieu 8.7 km | Lyon-Saint-Exupery | 27.5°C about the same | 1.1°C 1.8°C milder | 863 mm |
| Pont-de-Chéruy 9.2 km | Lyon-Saint-Exupery | 27.5°C about the same | 1.1°C 1.8°C milder | 863 mm |
Annoisin-Chatelans weather by month
Average daily high and low, mean temperature and rain, 1991–2020, at the Saint-Rambert-en-Bugey station; sunshine at Lyon-Saint-Exupery.
| Month | High | Low | Mean | Rain | Sun (hours) |
|---|---|---|---|---|---|
| January | 6.0°C | −0.7°C | 2.6°C | 134 mm | 73 |
| February | 8.2°C | −0.7°C | 3.8°C | 114 mm | 99 |
| March | 13.5°C | 1.6°C | 7.5°C | 112 mm | 168 |
| April | 17.4°C | 4.6°C | 11.0°C | 123 mm | 183 |
| May | 21.5°C | 8.4°C | 14.9°C | 135 mm | 217 |
| June | 25.3°C | 11.5°C | 18.4°C | 105 mm | 252 |
| July | 27.6°C | 13.2°C | 20.4°C | 108 mm | 279 |
| August | 27.2°C | 12.9°C | 20.1°C | 99 mm | 247 |
| September | 22.4°C | 9.8°C | 16.1°C | 128 mm | 186 |
| October | 17.1°C | 7.1°C | 12.1°C | 151 mm | 124 |
| November | 10.4°C | 2.9°C | 6.7°C | 159 mm | 72 |
| December | 6.2°C | 0.2°C | 3.2°C | 145 mm | 50 |
| Year | 16.9°C | 5.9°C | 11.4°C | 1,512 mm | 1,947 |
Where Annoisin-Chatelans’s numbers come from
Averages over 30 years, not a forecast.
- Temperature, rain and day counts: Météo-France’s fiche climatologique for Saint-Rambert-en-Bugey, 22 km away: statistics for 1991–2020.
- 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-Saint-Exupery, 17 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 Annoisin-Chatelans’s climate
How warm does Annoisin-Chatelans get in summer?
July is the warmest month, with average highs of 27.6°C. About 81 days a year reach 25°C, more than 72% of mainland French towns, and about 28 reach 30°C.
How cold does Annoisin-Chatelans get in winter?
January nights average −0.7°C. The air drops to 0°C or below on about 76 nights a year, and about 7 days a year stay below freezing all day.
How much rain does Annoisin-Chatelans get?
About 1,512 mm a year, more than almost every mainland French town. November is the wettest month (159 mm) and August the driest (99 mm).
How sunny is it?
The nearest Météo-France station that records sunshine, Lyon-Saint-Exupery (17 km away), averages 1,947 hours of sunshine a year.
Are these figures for Annoisin-Chatelans itself?
No: they are the normals of the Météo-France station matched to Annoisin-Chatelans, Saint-Rambert-en-Bugey, 22 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 SAINT RAMBERT EN BUGEY, edited 15/10/2026); altitude: IGN, RGE ALTI®. Licence Ouverte 2.0. Today’s forecast for Annoisin-Chatelans →
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.