Longchamp has colder winter nights than 93% of mainland French towns
The warmest part of a July day comes in at 24.7°C on average. By July afternoons alone, it runs cooler than 76% of mainland French towns. From frosty January to warm July, readings climb 26°C. The outdoor season runs from June to September, with highs of 20–25°C.
These are the figures of Météo-France’s Is-en-Bassigny station, 12 km south.
A year in Longchamp at a glance
Each month’s typical high and low in °C, at the Is-en-Bassigny station.
What a year in Longchamp feels like
Typical highs and lows by season and by month, from Météo-France’s 1991–2020 normals at Is-en-Bassigny.
About 874 mm of rain a year
December is the wettest month and April the driest. About 27 days a year bring 10 mm or more. 5th wettest of 6 towns of 2,500+ in Haute-Marne.
Rain by month
Millimeters
Sunshine by month
Hours of sunshine at Langres
A frosty town: 73 frosts and 44 days of 25°C a year
On about 73 nights a year the air drops to 0°C or below, and on about 13 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 Is-en-Bassigny: 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 Is-en-Bassigny
Is-en-Bassigny is 12 km south of Longchamp. Every figure on this page is the station’s, not a measurement in Longchamp itself.
| Station (Météo-France number) | Is-en-Bassigny (52248002) |
| Distance from the town | 12 km south |
| Station altitude | 403 m |
| Town altitude (its center) | 428 m |
| Period | 1991–2020 |
| Nearest station of any kind | 7.8 km |
| Sunshine measured at | Langres, 33 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 Longchamp 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 Haute-Marne.
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.
Longchamp weather by month
Average daily high and low, mean temperature and rain, 1991–2020, at the Is-en-Bassigny station; sunshine at Langres.
| Month | High | Low | Mean | Rain | Sun (hours) |
|---|---|---|---|---|---|
| January | 4.2°C | −0.8°C | 1.7°C | 80 mm | 57 |
| February | 6.0°C | −0.4°C | 2.8°C | 61 mm | 87 |
| March | 10.4°C | 1.6°C | 6.0°C | 66 mm | 147 |
| April | 14.5°C | 4.0°C | 9.2°C | 59 mm | 181 |
| May | 18.5°C | 7.7°C | 13.1°C | 81 mm | 199 |
| June | 22.4°C | 10.8°C | 16.6°C | 61 mm | 219 |
| July | 24.7°C | 12.6°C | 18.7°C | 73 mm | 234 |
| August | 24.3°C | 12.6°C | 18.4°C | 66 mm | 223 |
| September | 19.6°C | 9.3°C | 14.4°C | 63 mm | 175 |
| October | 14.3°C | 6.7°C | 10.5°C | 86 mm | 113 |
| November | 8.3°C | 2.8°C | 5.5°C | 89 mm | 62 |
| December | 5.0°C | 0.3°C | 2.6°C | 89 mm | 50 |
| Year | 14.4°C | 5.6°C | 10.0°C | 874 mm | 1,747 |
Where Longchamp’s numbers come from
Averages over 30 years, not a forecast.
- Temperature, rain and day counts: Météo-France’s fiche climatologique for Is-en-Bassigny, 12 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, Langres, 33 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 Haute-Marne.
Météo-France fiches climatologiques · IGN RGE ALTI®. Licence Ouverte 2.0.
Questions about Longchamp’s climate
How warm does Longchamp get in summer?
July is the warmest month, with average highs of 24.7°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 Longchamp get in winter?
January nights average −0.8°C. The air drops to 0°C or below on about 73 nights a year, and about 13 days a year stay below freezing all day.
How much rain does Longchamp get?
About 874 mm a year, more than 74% of mainland French towns. December is the wettest month (89 mm) and April the driest (59 mm).
How sunny is it?
The nearest Météo-France station that records sunshine, Langres (33 km away), averages 1,747 hours of sunshine a year.
Are these figures for Longchamp itself?
No: they are the normals of the Météo-France station matched to Longchamp, Is-en-Bassigny, 12 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 IS-EN-BASSIGNY, edited 15/10/2026); altitude: IGN, RGE ALTI®. Licence Ouverte 2.0. Today’s forecast for Longchamp →
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.