Plan-de-Baix is among the frostiest of mainland French towns
In July the day’s top temperature is typically 24.8°C. None of the 40 towns of 2,500+ in Drôme gets more rain. Of all months, November brings the most rain and July the least. Plan time outside from June to September, when highs sit at 19–25°C.
Figures from Météo-France’s Chapelle-en-Vercors station, 26 km north-east: at that distance, read them as the area’s climate rather than the town’s.
A year in Plan-de-Baix at a glance
Each month’s typical high and low in °C, at the Chapelle-en-Vercors station.
What a year in Plan-de-Baix feels like
Typical highs and lows by season and by month, from Météo-France’s 1991–2020 normals at Chapelle-en-Vercors.
About 1,326 mm of rain a year
November is the wettest month and July the driest. About 46 days a year bring 10 mm or more. The wettest of 40 towns of 2,500+ in Drôme.
Rain by month
Millimeters
Sunshine by month
Hours of sunshine at Montélimar
A frosty town: 103 frosts and 44 days of 25°C a year
On about 103 nights a year the air drops to 0°C or below, and on about 14 days it stays below freezing all day. About 44 days a year reach 25°C, and 9 reach 30°C.
Day counts are Météo-France’s 1991–2020 normals at Chapelle-en-Vercors: 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 Chapelle-en-Vercors
Chapelle-en-Vercors is 26 km north-east of Plan-de-Baix. Every figure on this page is the station’s, not a measurement in Plan-de-Baix itself.
| Station (Météo-France number) | Chapelle-en-Vercors (26074001) |
| Distance from the town | 26 km north-east |
| Station altitude | 879 m |
| Town altitude (its center) | 791 m |
| Period | 1994–2020 (the station’s own record) |
| Nearest station of any kind | 5.3 km |
| Sunshine measured at | Montélimar, 43 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 Plan-de-Baix 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 Drôme.
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 |
|---|---|---|---|---|
| Plan-de-Baix | Chapelle-en-Vercors | 24.8°C | −2.6°C | 1,326 mm |
| Aouste-sur-Sye 15 km | Puy-Saint-Martin | 30.2°C 5.4°C warmer | 1.8°C 4.4°C milder | 923 mm |
| Montmeyran 15 km | Valence-Chabeui | 29.4°C 4.6°C warmer | 1.0°C 3.6°C milder | 874 mm |
| Crest 15 km | Puy-Saint-Martin | 30.2°C 5.4°C warmer | 1.8°C 4.4°C milder | 923 mm |
| Chabeuil 15 km | Valence-Chabeui | 29.4°C 4.6°C warmer | 1.0°C 3.6°C milder | 874 mm |
| Montélier 17 km | Valence-Chabeui | 29.4°C 4.6°C warmer | 1.0°C 3.6°C milder | 874 mm |
| Beaumont-lès-Valence 18 km | Étoile | 29.2°C 4.4°C warmer | 1.7°C 4.3°C milder | 905 mm |
Plan-de-Baix weather by month
Average daily high and low, mean temperature and rain, 1991–2020, at the Chapelle-en-Vercors station; sunshine at Montélimar.
| Month | High | Low | Mean | Rain | Sun (hours) |
|---|---|---|---|---|---|
| January | 5.7°C | −2.6°C | 1.6°C | 108 mm | 107 |
| February | 6.5°C | −2.7°C | 1.9°C | 95 mm | 136 |
| March | 10.3°C | −0.3°C | 5.0°C | 103 mm | 200 |
| April | 13.7°C | 2.7°C | 8.2°C | 117 mm | 219 |
| May | 17.7°C | 6.4°C | 12.0°C | 132 mm | 260 |
| June | 22.0°C | 9.6°C | 15.8°C | 91 mm | 300 |
| July | 24.8°C | 11.5°C | 18.2°C | 90 mm | 330 |
| August | 24.4°C | 11.4°C | 17.9°C | 93 mm | 299 |
| September | 19.4°C | 8.1°C | 13.7°C | 120 mm | 231 |
| October | 15.6°C | 5.6°C | 10.6°C | 120 mm | 156 |
| November | 9.5°C | 1.2°C | 5.4°C | 147 mm | 110 |
| December | 6.2°C | −1.7°C | 2.3°C | 112 mm | 95 |
| Year | 14.7°C | 4.1°C | 9.4°C | 1,326 mm | 2,441 |
Where Plan-de-Baix’s numbers come from
Averages over 30 years, not a forecast.
- Temperature, rain and day counts: Météo-France’s fiche climatologique for Chapelle-en-Vercors, 26 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, Montélimar, 43 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 Drôme.
Météo-France fiches climatologiques · IGN RGE ALTI®. Licence Ouverte 2.0.
Questions about Plan-de-Baix’s climate
How warm does Plan-de-Baix get in summer?
July is the warmest month, with average highs of 24.8°C. About 44 days a year reach 25°C, fewer than 75% of mainland French towns, and about 9 reach 30°C.
How cold does Plan-de-Baix get in winter?
February nights average −2.7°C. The air drops to 0°C or below on about 103 nights a year, and about 14 days a year stay below freezing all day.
How much rain does Plan-de-Baix get?
About 1,326 mm a year, more than 98% of mainland French towns. November is the wettest month (147 mm) and July the driest (90 mm).
How sunny is it?
The nearest Météo-France station that records sunshine, Montélimar (43 km away), averages 2,441 hours of sunshine a year.
Are these figures for Plan-de-Baix itself?
No: they are the normals of the Météo-France station matched to Plan-de-Baix, Chapelle-en-Vercors, 26 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 CHAPELLE-EN-VERCORS_SAPC, edited 15/10/2026); altitude: IGN, RGE ALTI®. Licence Ouverte 2.0. Today’s forecast for Plan-de-Baix →
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.