Afternoon heat in Tronchy beats that of 83% of mainland French towns
Midwinter brings lows of about 0.7°C. Winter nights are cold: in January they are colder than in 78% of mainland French towns. Only 28°C separates winter nights from summer afternoons. The heating season runs November to March: each of those months averages under 10°C.
These are the figures of Météo-France’s Saint-Marcel station, 14 km north-west.
A year in Tronchy at a glance
Each month’s typical high and low in °C, at the Saint-Marcel station.
What a year in Tronchy feels like
Typical highs and lows by season and by month, from Météo-France’s 1991–2020 normals at Saint-Marcel.
About 818 mm of rain a year
November is the wettest month and February the driest. About 26 days a year bring 10 mm or more. 19th 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: 58 frosts and 88 days of 25°C a year
On about 58 nights a year the air drops to 0°C or below, and on about 7 days it stays below freezing all day. About 88 days a year reach 25°C, and 36 reach 30°C.
Day counts are Météo-France’s 1991–2020 normals at Saint-Marcel: 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 Saint-Marcel
Saint-Marcel is 14 km north-west of Tronchy. Every figure on this page is the station’s, not a measurement in Tronchy itself.
| Station (Météo-France number) | Saint-Marcel (71445001) |
| Distance from the town | 14 km north-west |
| Station altitude | 187 m |
| Town altitude (its center) | 206 m |
| Period | 1991–2020 |
| Sunshine measured at | Tavaux Sa, 44 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 Tronchy 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 |
|---|---|---|---|---|
| Tronchy | Saint-Marcel | 28.3°C | 0.7°C | 818 mm |
| Ouroux-sur-Saône 9.6 km | same station | 28.3°C about the same | 0.7°C about the same | 818 mm |
| Saint-Marcel 15 km | same station | 28.3°C about the same | 0.7°C about the same | 818 mm |
| Louhans-Châteaurenaud 16 km | Montpont | 27.3°C 1°C cooler | 0.2°C about the same | 1,026 mm |
| Chalon-sur-Saône 18 km | same station | 28.3°C about the same | 0.7°C about the same | 818 mm |
| Sennecey-le-Grand 19 km | same station | 28.3°C about the same | 0.7°C about the same | 818 mm |
| Gergy 19 km | Chalon-Champfo | 26.7°C 1.6°C cooler | −0.2°C 0.9°C colder | 737 mm |
Tronchy weather by month
Average daily high and low, mean temperature and rain, 1991–2020, at the Saint-Marcel station; sunshine at Tavaux Sa.
| Month | High | Low | Mean | Rain | Sun (hours) |
|---|---|---|---|---|---|
| January | 6.0°C | 0.7°C | 3.3°C | 61 mm | 57 |
| February | 8.3°C | 0.6°C | 4.5°C | 48 mm | 100 |
| March | 13.6°C | 3.1°C | 8.4°C | 51 mm | 186 |
| April | 17.7°C | 5.8°C | 11.8°C | 61 mm | 215 |
| May | 21.8°C | 9.8°C | 15.8°C | 76 mm | 221 |
| June | 26.0°C | 13.4°C | 19.7°C | 66 mm | 252 |
| July | 28.3°C | 15.2°C | 21.8°C | 69 mm | 276 |
| August | 28.1°C | 14.7°C | 21.4°C | 70 mm | 251 |
| September | 23.2°C | 11.2°C | 17.2°C | 72 mm | 205 |
| October | 17.2°C | 8.2°C | 12.7°C | 87 mm | 128 |
| November | 10.4°C | 4.0°C | 7.2°C | 91 mm | 67 |
| December | 6.5°C | 1.5°C | 4.0°C | 67 mm | 54 |
| Year | 17.3°C | 7.3°C | 12.3°C | 818 mm | 2,012 |
Where Tronchy’s numbers come from
Averages over 30 years, not a forecast.
- Temperature, rain and day counts: Météo-France’s fiche climatologique for Saint-Marcel, 14 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, 44 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 Tronchy’s climate
How warm does Tronchy get in summer?
July is the warmest month, with average highs of 28.3°C. About 88 days a year reach 25°C, more than 79% of mainland French towns, and about 36 reach 30°C.
How cold does Tronchy get in winter?
February nights average 0.6°C. The air drops to 0°C or below on about 58 nights a year, and about 7 days a year stay below freezing all day.
How much rain does Tronchy get?
About 818 mm a year, more than 63% of mainland French towns. November is the wettest month (91 mm) and February the driest (48 mm).
How sunny is it?
The nearest Météo-France station that records sunshine, Tavaux Sa (44 km away), averages 2,012 hours of sunshine a year.
Are these figures for Tronchy itself?
No: they are the normals of the Météo-France station matched to Tronchy, Saint-Marcel, 14 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 ST-MARCEL, edited 15/10/2026); altitude: IGN, RGE ALTI®. Licence Ouverte 2.0. Today’s forecast for Tronchy →
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.