Winter nights in Grandfontaine are colder than in 95% of mainland French towns
Peak summer warmth arrives in July, with afternoons near 23.7°C. Of the 79 towns of 2,500+ in Bas-Rhin, it is the wettest. The gap between a January night and a July afternoon is 25°C. Wet days, with 1 mm of rain or more, come about 146 times a year.
These are the figures of Météo-France’s Wangenbourg station, 20 km north-east.
A year in Grandfontaine at a glance
Each month’s typical high and low in °C, at the Wangenbourg station.
What a year in Grandfontaine feels like
Typical highs and lows by season and by month, from Météo-France’s 1991–2020 normals at Wangenbourg.
About 1,132 mm of rain a year
December is the wettest month and April the driest. About 37 days a year bring 10 mm or more. The wettest of 79 towns of 2,500+ in Bas-Rhin.
Rain by month
Millimeters
A frosty town: 71 frosts and 37 days of 25°C a year
On about 71 nights a year the air drops to 0°C or below, and on about 22 days it stays below freezing all day. About 37 days a year reach 25°C, and 7 reach 30°C.
Day counts are Météo-France’s 1991–2020 normals at Wangenbourg: 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 Wangenbourg
Wangenbourg is 20 km north-east of Grandfontaine. Every figure on this page is the station’s, not a measurement in Grandfontaine itself.
| Station (Météo-France number) | Wangenbourg (67122001) |
| Distance from the town | 20 km north-east |
| Station altitude | 460 m |
| Town altitude (its center) | 471 m |
| Period | 1991–2020 |
| Nearest station of any kind | 10 km |
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 Grandfontaine 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 Bas-Rhin.
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 |
|---|---|---|---|---|
| Grandfontaine | Wangenbourg | 23.7°C | −1.2°C | 1,132 mm |
| La Broque 4.2 km | Villé | 26.7°C 3°C warmer | −0.4°C 0.8°C milder | 958 mm |
| Mutzig 22 km | Strasbourg-Entzheim | 26.4°C 2.7°C warmer | −0.2°C 1°C milder | 636 mm |
| Moyenmoutier 22 km | Badonviller | 25.3°C 1.6°C warmer | −1.3°C about the same | 1,066 mm |
| Rosheim 23 km | Strasbourg-Entzheim | 26.4°C 2.7°C warmer | −0.2°C 1°C milder | 636 mm |
| Barr 23 km | Villé | 26.7°C 3°C warmer | −0.4°C 0.8°C milder | 958 mm |
| Dorlisheim 24 km | Strasbourg-Entzheim | 26.4°C 2.7°C warmer | −0.2°C 1°C milder | 636 mm |
Grandfontaine weather by month
Average daily high and low, mean temperature and rain, 1991–2020, at the Wangenbourg station.
| Month | High | Low | Mean | Rain |
|---|---|---|---|---|
| January | 3.8°C | −1.2°C | 1.3°C | 103 mm |
| February | 5.1°C | −0.8°C | 2.1°C | 97 mm |
| March | 9.3°C | 1.9°C | 5.6°C | 96 mm |
| April | 14.1°C | 4.9°C | 9.5°C | 72 mm |
| May | 18.0°C | 8.8°C | 13.4°C | 98 mm |
| June | 21.8°C | 12.1°C | 17.0°C | 80 mm |
| July | 23.7°C | 14.2°C | 18.9°C | 85 mm |
| August | 23.5°C | 14.1°C | 18.8°C | 82 mm |
| September | 18.8°C | 10.5°C | 14.7°C | 83 mm |
| October | 13.3°C | 6.8°C | 10.1°C | 102 mm |
| November | 7.7°C | 2.6°C | 5.1°C | 106 mm |
| December | 4.6°C | −0.1°C | 2.2°C | 126 mm |
| Year | 13.6°C | 6.2°C | 9.9°C | 1,132 mm |
Where Grandfontaine’s numbers come from
Averages over 30 years, not a forecast.
- Temperature, rain and day counts: Météo-France’s fiche climatologique for Wangenbourg, 20 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.
- Comparisons: every town of 2,500 or more in mainland France, read the same way; the dots are the towns of 2,500+ in Bas-Rhin.
Météo-France fiches climatologiques · IGN RGE ALTI®. Licence Ouverte 2.0.
Questions about Grandfontaine’s climate
How warm does Grandfontaine get in summer?
July is the warmest month, with average highs of 23.7°C. About 37 days a year reach 25°C, fewer than 85% of mainland French towns, and about 7 reach 30°C.
How cold does Grandfontaine get in winter?
January nights average −1.2°C. The air drops to 0°C or below on about 71 nights a year, and about 22 days a year stay below freezing all day.
How much rain does Grandfontaine get?
About 1,132 mm a year, more than 93% of mainland French towns. December is the wettest month (126 mm) and April the driest (72 mm).
Are these figures for Grandfontaine itself?
No: they are the normals of the Météo-France station matched to Grandfontaine, Wangenbourg, 20 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 WANGENBOURG_SAPC, edited 15/10/2026); altitude: IGN, RGE ALTI®. Licence Ouverte 2.0. Today’s forecast for Grandfontaine →
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.