Few mainland French towns get more rain than Châtelblanc: 1,787 mm a year
July afternoons average 22.0°C. Wet weather is most frequent in December and least in April. By frosts alone, it ranks colder than almost every mainland French town. Keep the boiler serviced for the months from October to April, which average under 10°C.
These are the figures of Météo-France’s Cerniébaud station, 7.1 km north.
A year in Châtelblanc at a glance
Each month’s typical high and low in °C, at the Cerniébaud station.
What a year in Châtelblanc feels like
Typical highs and lows by season and by month, from Météo-France’s 1991–2020 normals at Cerniébaud.
About 1,787 mm of rain a year
December is the wettest month and April the driest. About 66 days a year bring 10 mm or more. The wettest of 34 towns of 2,500+ in Doubs.
Rain by month
Millimeters
Sunshine by month
Hours of sunshine at Besançon
A frosty town: 127 frosts and 27 days of 25°C a year
On about 127 nights a year the air drops to 0°C or below, and on about 20 days it stays below freezing all day. About 27 days a year reach 25°C, and 4 reach 30°C.
Day counts are Météo-France’s 1991–2020 normals at Cerniébaud: 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 Cerniébaud
Cerniébaud is 7.1 km north of Châtelblanc. Every figure on this page is the station’s, not a measurement in Châtelblanc itself.
| Station (Météo-France number) | Cerniébaud (39085002) |
| Distance from the town | 7.1 km north |
| Station altitude | 966 m |
| Town altitude (its center) | 1,024 m |
| Period | 1991–2020 |
| Sunshine measured at | Besançon, 65 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 Châtelblanc 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 Doubs.
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 |
|---|---|---|---|---|
| Châtelblanc | Cerniébaud | 22.0°C | −3.9°C | 1,787 mm |
| Champagnole 18 km | Champagnole | 24.8°C 2.8°C warmer | −3.1°C 0.8°C milder | 1,573 mm |
| Hauts de Bienne 18 km | Saint-Claude | 26.9°C 4.9°C warmer | −2.3°C 1.6°C milder | 1,869 mm |
| Les Rousses 21 km | La Pesse | 20.0°C 2°C cooler | −4.2°C about the same | 1,660 mm |
Châtelblanc weather by month
Average daily high and low, mean temperature and rain, 1991–2020, at the Cerniébaud station; sunshine at Besançon.
| Month | High | Low | Mean | Rain | Sun (hours) |
|---|---|---|---|---|---|
| January | 4.1°C | −3.9°C | 0.1°C | 155 mm | 68 |
| February | 4.7°C | −4.2°C | 0.2°C | 133 mm | 97 |
| March | 8.4°C | −1.3°C | 3.6°C | 136 mm | 153 |
| April | 12.1°C | 1.6°C | 6.8°C | 130 mm | 184 |
| May | 16.0°C | 5.5°C | 10.8°C | 162 mm | 208 |
| June | 19.9°C | 8.8°C | 14.4°C | 142 mm | 231 |
| July | 22.0°C | 10.7°C | 16.4°C | 138 mm | 249 |
| August | 22.0°C | 10.6°C | 16.3°C | 136 mm | 237 |
| September | 17.6°C | 7.5°C | 12.6°C | 137 mm | 184 |
| October | 13.8°C | 4.3°C | 9.0°C | 166 mm | 132 |
| November | 8.1°C | −0.1°C | 4.0°C | 166 mm | 75 |
| December | 4.7°C | −3.0°C | 0.9°C | 185 mm | 56 |
| Year | 12.8°C | 3.0°C | 7.9°C | 1,787 mm | 1,873 |
Where Châtelblanc’s numbers come from
Averages over 30 years, not a forecast.
- Temperature, rain and day counts: Météo-France’s fiche climatologique for Cerniébaud, 7.1 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, Besançon, 65 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 Doubs.
Météo-France fiches climatologiques · IGN RGE ALTI®. Licence Ouverte 2.0.
Questions about Châtelblanc’s climate
How warm does Châtelblanc get in summer?
July is the warmest month, with average highs of 22.0°C. About 27 days a year reach 25°C, fewer than 93% of mainland French towns, and about 4 reach 30°C.
How cold does Châtelblanc get in winter?
February nights average −4.2°C. The air drops to 0°C or below on about 127 nights a year, and about 20 days a year stay below freezing all day.
How much rain does Châtelblanc get?
About 1,787 mm a year, more than almost every mainland French town. December is the wettest month (185 mm) and April the driest (130 mm).
How sunny is it?
The nearest Météo-France station that records sunshine, Besançon (65 km away), averages 1,873 hours of sunshine a year.
Are these figures for Châtelblanc itself?
No: they are the normals of the Météo-France station matched to Châtelblanc, Cerniébaud, 7.1 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 CERNIEBAUD, edited 15/10/2026); altitude: IGN, RGE ALTI®. Licence Ouverte 2.0. Today’s forecast for Châtelblanc →
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.