Champfromier is among the wettest of mainland French towns: 1,610 mm of rain a year
Nights in January average −2.8°C. Frosty nights outnumber those of almost every mainland French town. Seasons differ by 28°C, from the coldest nights to the warmest afternoons. An umbrella earns its place on about 140 days a year with 1 mm of rain or more.
Figures from Météo-France’s Vieu station, 24 km south-west.
A year in Champfromier at a glance
Each month’s typical high and low in °C, at the Vieu station.
What a year in Champfromier feels like
Typical highs and lows by season and by month, from Météo-France’s 1991–2020 normals at Vieu.
About 1,610 mm of rain a year
December is the wettest month and August the driest. About 56 days a year bring 10 mm or more. 3rd wettest of 60 towns of 2,500+ in Ain.
Rain by month
Millimeters
Sunshine by month
Hours of sunshine at Meythet
A frosty town: 107 frosts and 48 days of 25°C a year
On about 107 nights a year the air drops to 0°C or below, and on about 12 days it stays below freezing all day. About 48 days a year reach 25°C, and 10 reach 30°C.
Day counts are Météo-France’s 1991–2020 normals at Vieu: 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 Vieu
Vieu is 24 km south-west of Champfromier. Every figure on this page is the station’s, not a measurement in Champfromier itself.
| Station (Météo-France number) | Vieu (01441001) |
| Distance from the town | 24 km south-west |
| Station altitude | 616 m |
| Town altitude (its center) | 638 m |
| Period | 1991–2020 |
| Nearest station of any kind | 4.8 km |
| Sunshine measured at | Meythet, 37 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 Champfromier 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 Ain.
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 |
|---|---|---|---|---|
| Champfromier | Vieu | 24.7°C | −2.8°C | 1,610 mm |
| Péron 8.3 km | Archamps | 26.4°C 1.7°C warmer | −1.0°C 1.8°C milder | 1,170 mm |
| Valserhône 9.2 km | Bellegarde | 27.5°C 2.8°C warmer | −1.7°C 1.1°C milder | 1,185 mm |
| Thoiry 13 km | Archamps | 26.4°C 1.7°C warmer | −1.0°C 1.8°C milder | 1,170 mm |
| Arbent 14 km | Cernon | 25.4°C 0.7°C warmer | −1.5°C 1.3°C milder | 1,568 mm |
| Oyonnax 15 km | Cernon | 25.4°C 0.7°C warmer | −1.5°C 1.3°C milder | 1,568 mm |
| Valleiry 15 km | Archamps | 26.4°C 1.7°C warmer | −1.0°C 1.8°C milder | 1,170 mm |
Champfromier weather by month
Average daily high and low, mean temperature and rain, 1991–2020, at the Vieu station; sunshine at Meythet.
| Month | High | Low | Mean | Rain | Sun (hours) |
|---|---|---|---|---|---|
| January | 5.5°C | −2.8°C | 1.4°C | 143 mm | 88 |
| February | 6.7°C | −3.0°C | 1.8°C | 122 mm | 113 |
| March | 10.9°C | −0.5°C | 5.2°C | 125 mm | 174 |
| April | 14.5°C | 2.1°C | 8.3°C | 126 mm | 191 |
| May | 18.5°C | 6.2°C | 12.3°C | 138 mm | 220 |
| June | 22.4°C | 9.5°C | 16.0°C | 115 mm | 256 |
| July | 24.7°C | 11.4°C | 18.1°C | 124 mm | 274 |
| August | 24.6°C | 11.2°C | 17.9°C | 106 mm | 249 |
| September | 20.0°C | 8.0°C | 14.0°C | 127 mm | 195 |
| October | 15.5°C | 5.4°C | 10.4°C | 153 mm | 141 |
| November | 9.6°C | 1.0°C | 5.3°C | 165 mm | 91 |
| December | 6.3°C | −1.8°C | 2.2°C | 166 mm | 78 |
| Year | 14.9°C | 3.9°C | 9.4°C | 1,610 mm | 2,069 |
Where Champfromier’s numbers come from
Averages over 30 years, not a forecast.
- Temperature, rain and day counts: Météo-France’s fiche climatologique for Vieu, 24 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, Meythet, 37 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 Ain.
Météo-France fiches climatologiques · IGN RGE ALTI®. Licence Ouverte 2.0.
Questions about Champfromier’s climate
How warm does Champfromier get in summer?
July is the warmest month, with average highs of 24.7°C. About 48 days a year reach 25°C, fewer than 71% of mainland French towns, and about 10 reach 30°C.
How cold does Champfromier get in winter?
February nights average −3.0°C. The air drops to 0°C or below on about 107 nights a year, and about 12 days a year stay below freezing all day.
How much rain does Champfromier get?
About 1,610 mm a year, more than almost every mainland French town. December is the wettest month (166 mm) and August the driest (106 mm).
How sunny is it?
The nearest Météo-France station that records sunshine, Meythet (37 km away), averages 2,069 hours of sunshine a year.
Are these figures for Champfromier itself?
No: they are the normals of the Météo-France station matched to Champfromier, Vieu, 24 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 VIEU, edited 15/10/2026); altitude: IGN, RGE ALTI®. Licence Ouverte 2.0. Today’s forecast for Champfromier →
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.