Midwinter lows in Mercey-sur-Saône sink below those of 81% of mainland French towns
Expect July afternoons of about 26.4°C. Of the 11 towns of 2,500+ in Haute-Saône, it is the driest. October is the wettest month, February the driest. Wet days, with 1 mm of rain or more, come about 125 times a year.
These are the figures of Météo-France’s Chargey-lès-Gray station, 11 km west.
A year in Mercey-sur-Saône at a glance
Each month’s typical high and low in °C, at the Chargey-lès-Gray station.
What a year in Mercey-sur-Saône feels like
Typical highs and lows by season and by month, from Météo-France’s 1991–2020 normals at Chargey-lès-Gray.
About 834 mm of rain a year
October is the wettest month and February the driest. About 25 days a year bring 10 mm or more. 11th wettest of 11 towns of 2,500+ in Haute-Saône.
Rain by month
Millimeters
Sunshine by month
Hours of sunshine at Chargey-lès-Gray
A frosty town: 58 frosts and 63 days of 25°C a year
On about 58 nights a year the air drops to 0°C or below, and on about 8 days it stays below freezing all day. About 63 days a year reach 25°C, and 19 reach 30°C.
Day counts are Météo-France’s 1991–2020 normals at Chargey-lès-Gray: 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 Chargey-lès-Gray
Chargey-lès-Gray is 11 km west of Mercey-sur-Saône. Every figure on this page is the station’s, not a measurement in Mercey-sur-Saône itself.
| Station (Météo-France number) | Chargey-lès-Gray (70132001) |
| Distance from the town | 11 km west |
| Station altitude | 244 m |
| Town altitude (its center) | 205 m |
| Period | 1997–2020 (the station’s own record) |
| Sunshine measured at | the same station |
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 Mercey-sur-Saône 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-Saône.
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 |
|---|---|---|---|---|
| Mercey-sur-Saône | Chargey-lès-Gray | 26.4°C | 0.4°C | 834 mm |
| Gray 15 km | same station | 26.4°C about the same | 0.4°C about the same | 834 mm |
| Port-sur-Saône 29 km | Vesoul Ville | 27.2°C 0.8°C warmer | −0.4°C 0.8°C colder | 1,008 mm |
Mercey-sur-Saône weather by month
Average daily high and low, mean temperature and rain, 1991–2020, at the Chargey-lès-Gray station.
| Month | High | Low | Mean | Rain | Sun (hours) |
|---|---|---|---|---|---|
| January | 5.5°C | 0.4°C | 2.9°C | 61 mm | 70 |
| February | 7.4°C | 0.5°C | 3.9°C | 50 mm | 99 |
| March | 12.1°C | 2.9°C | 7.5°C | 60 mm | 165 |
| April | 16.4°C | 5.5°C | 11.0°C | 64 mm | 198 |
| May | 20.2°C | 9.2°C | 14.7°C | 82 mm | 222 |
| June | 24.5°C | 12.5°C | 18.5°C | 71 mm | 255 |
| July | 26.4°C | 14.2°C | 20.3°C | 77 mm | 254 |
| August | 25.9°C | 14.1°C | 20.0°C | 77 mm | 229 |
| September | 21.7°C | 10.9°C | 16.3°C | 62 mm | 189 |
| October | 16.1°C | 7.9°C | 12.0°C | 82 mm | 124 |
| November | 9.7°C | 3.6°C | 6.7°C | 80 mm | 72 |
| December | 6.0°C | 1.1°C | 3.6°C | 68 mm | 58 |
| Year | 16.0°C | 6.9°C | 11.5°C | 834 mm | 1,934 |
Where Mercey-sur-Saône’s numbers come from
Averages over 30 years, not a forecast.
- Temperature, rain and day counts: Météo-France’s fiche climatologique for Chargey-lès-Gray, 11 km away: statistics for 1991–2020 (the station’s own years, 1997–2020, 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, Chargey-lès-Gray, 11 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-Saône.
Météo-France fiches climatologiques · IGN RGE ALTI®. Licence Ouverte 2.0.
Questions about Mercey-sur-Saône’s climate
How warm does Mercey-sur-Saône get in summer?
July is the warmest month, with average highs of 26.4°C. About 63 days a year reach 25°C, more than 54% of mainland French towns, and about 19 reach 30°C.
How cold does Mercey-sur-Saône get in winter?
January nights average 0.4°C. The air drops to 0°C or below on about 58 nights a year, and about 8 days a year stay below freezing all day.
How much rain does Mercey-sur-Saône get?
About 834 mm a year, more than 68% of mainland French towns. October is the wettest month (82 mm) and February the driest (50 mm).
How sunny is it?
The nearest Météo-France station that records sunshine, Chargey-lès-Gray (11 km away), averages 1,934 hours of sunshine a year.
Are these figures for Mercey-sur-Saône itself?
No: they are the normals of the Météo-France station matched to Mercey-sur-Saône, Chargey-lès-Gray, 11 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 CHARGEY-LES-GRAY, edited 15/10/2026); altitude: IGN, RGE ALTI®. Licence Ouverte 2.0. Today’s forecast for Mercey-sur-Saône →
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.