Ice on the ground: Gergy sees more frosts than 91% of mainland French towns
July afternoons average 26.7°C. Summer afternoons here are warmer than in 64% of mainland French towns. Wet weather is most frequent in November and least in February. For walks and days out, the stretch from May to September brings highs of 21–27°C.
These are the figures of Météo-France’s Chalon-Champfo station, 10 km south-west.
A year in Gergy at a glance
Each month’s typical high and low in °C, at the Chalon-Champfo station.
What a year in Gergy feels like
Typical highs and lows by season and by month, from Météo-France’s 1991–2020 normals at Chalon-Champfo.
About 737 mm of rain a year
November is the wettest month and February the driest. About 22 days a year bring 10 mm or more. 28th wettest of 32 towns of 2,500+ in Saône-et-Loire.
Rain by month
Millimeters
Sunshine by month
Hours of sunshine at Tavaux Sa
A frosty town: 70 frosts and 68 days of 25°C a year
On about 70 nights a year the air drops to 0°C or below, and on about 7 days it stays below freezing all day. About 68 days a year reach 25°C, and 20 reach 30°C.
Day counts are Météo-France’s 1991–2020 normals at Chalon-Champfo: 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 Chalon-Champfo
Chalon-Champfo is 10 km south-west of Gergy. Every figure on this page is the station’s, not a measurement in Gergy itself.
| Station (Météo-France number) | Chalon-Champfo (71081001) |
| Distance from the town | 10 km south-west |
| Station altitude | 187 m |
| Town altitude (its center) | 188 m |
| Period | 1991–2020 |
| Nearest station of any kind | 8.7 km |
| Sunshine measured at | Tavaux Sa, 42 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 Gergy 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 Saône-et-Loire.
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.
| Town | Station | July high | January low | Rain a year |
|---|---|---|---|---|
| Gergy | Chalon-Champfo | 26.7°C | −0.2°C | 737 mm |
| Champforgeuil 10 km | same station | 26.7°C about the same | −0.2°C about the same | 737 mm |
| Chalon-sur-Saône 11 km | Saint-Marcel | 28.3°C 1.6°C warmer | 0.7°C 0.9°C milder | 818 mm |
| Saint-Marcel 11 km | Saint-Marcel | 28.3°C 1.6°C warmer | 0.7°C 0.9°C milder | 818 mm |
| Châtenoy-le-Royal 13 km | same station | 26.7°C about the same | −0.2°C about the same | 737 mm |
| Saint-Rémy 14 km | Saint-Marcel | 28.3°C 1.6°C warmer | 0.7°C 0.9°C milder | 818 mm |
| Chagny 15 km | same station | 26.7°C about the same | −0.2°C about the same | 737 mm |
Gergy weather by month
Average daily high and low, mean temperature and rain, 1991–2020, at the Chalon-Champfo station; sunshine at Tavaux Sa.
| Month | High | Low | Mean | Rain | Sun (hours) |
|---|---|---|---|---|---|
| January | 6.2°C | −0.2°C | 3.0°C | 54 mm | 57 |
| February | 8.2°C | 0.0°C | 4.1°C | 43 mm | 100 |
| March | 12.9°C | 2.0°C | 7.5°C | 44 mm | 186 |
| April | 16.7°C | 4.5°C | 10.6°C | 58 mm | 215 |
| May | 20.8°C | 8.4°C | 14.6°C | 73 mm | 221 |
| June | 24.6°C | 12.0°C | 18.3°C | 58 mm | 252 |
| July | 26.7°C | 13.8°C | 20.2°C | 68 mm | 276 |
| August | 26.5°C | 13.3°C | 19.9°C | 58 mm | 251 |
| September | 22.0°C | 9.9°C | 16.0°C | 64 mm | 205 |
| October | 16.6°C | 7.0°C | 11.8°C | 78 mm | 128 |
| November | 10.3°C | 2.9°C | 6.6°C | 80 mm | 67 |
| December | 6.7°C | 0.5°C | 3.6°C | 59 mm | 54 |
| Year | 16.5°C | 6.2°C | 11.4°C | 737 mm | 2,012 |
Where Gergy’s numbers come from
Averages over 30 years, not a forecast.
- Temperature, rain and day counts: Météo-France’s fiche climatologique for Chalon-Champfo, 10 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, Tavaux Sa, 42 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 Saône-et-Loire.
Météo-France fiches climatologiques · IGN RGE ALTI®. Licence Ouverte 2.0.
Questions about Gergy’s climate
How warm does Gergy get in summer?
July is the warmest month, with average highs of 26.7°C. About 68 days a year reach 25°C, more than 61% of mainland French towns, and about 20 reach 30°C.
How cold does Gergy get in winter?
January nights average −0.2°C. The air drops to 0°C or below on about 70 nights a year, and about 7 days a year stay below freezing all day.
How much rain does Gergy get?
About 737 mm a year, less than 57% of mainland French towns. November is the wettest month (80 mm) and February the driest (43 mm).
How sunny is it?
The nearest Météo-France station that records sunshine, Tavaux Sa (42 km away), averages 2,012 hours of sunshine a year.
Are these figures for Gergy itself?
No: they are the normals of the Météo-France station matched to Gergy, Chalon-Champfo, 10 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 CHALON-CHAMPFO, edited 15/10/2026); altitude: IGN, RGE ALTI®. Licence Ouverte 2.0. Today’s forecast for Gergy →
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.