Summer arrives softly in Hercé, cooler than in 90% of mainland French towns
In January the night’s low is typically 2.3°C. December is the wettest month, July the driest. None of the 19 towns of 2,500+ in Mayenne gets more rain. Expect about 36 frosty starts a year, nights when the air falls below freezing.
These are the figures of Météo-France’s Saint-Mars/la-Futa station, 12 km west.
A year in Hercé at a glance
Each month’s typical high and low in °C, at the Saint-Mars/la-Futa station.
What a year in Hercé feels like
Typical highs and lows by season and by month, from Météo-France’s 1991–2020 normals at Saint-Mars/la-Futa.
About 929 mm of rain a year
December is the wettest month and July the driest. About 27 days a year bring 10 mm or more. The wettest of 19 towns of 2,500+ in Mayenne.
Rain by month
Millimeters
36 frosts and 32 days of 25°C a year
On about 36 nights a year the air drops to 0°C or below, and on about 2 days it stays below freezing all day. About 32 days a year reach 25°C, and 6 reach 30°C.
Day counts are Météo-France’s 1991–2020 normals at Saint-Mars/la-Futa: 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-Mars/la-Futa
Saint-Mars/la-Futa is 12 km west of Hercé. Every figure on this page is the station’s, not a measurement in Hercé itself.
| Station (Météo-France number) | Saint-Mars/la-Futa (53238002) |
| Distance from the town | 12 km west |
| Station altitude | 208 m |
| Town altitude (its center) | 188 m |
| Period | 1991–2019 (the station’s own record) |
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 Hercé 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 Mayenne.
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 |
|---|---|---|---|---|
| Hercé | Saint-Mars/la-Futa | 23.5°C | 2.3°C | 929 mm |
| Ernée 15 km | Mayenne | 24.4°C 0.9°C warmer | 2.3°C about the same | 850 mm |
| Ambrières-les-Vallées 17 km | Mayenne | 24.4°C 0.9°C warmer | 2.3°C about the same | 850 mm |
| Louvigné-du-Désert 21 km | Louvigné-du-Désert | 22.9°C 0.6°C cooler | 2.4°C about the same | 941 mm |
| Mayenne 22 km | Mayenne | 24.4°C 0.9°C warmer | 2.3°C about the same | 850 mm |
| Mortain-Bocage 24 km | Saint-Hilaire-du-H | 23.7°C about the same | 2.7°C about the same | 930 mm |
| Domfront en Poiraie 24 km | Saint-Fraimbault | 23.7°C about the same | 2.1°C about the same | 850 mm |
Hercé weather by month
Average daily high and low, mean temperature and rain, 1991–2020, at the Saint-Mars/la-Futa station.
| Month | High | Low | Mean | Rain |
|---|---|---|---|---|
| January | 7.7°C | 2.3°C | 5.0°C | 91 mm |
| February | 8.8°C | 2.2°C | 5.5°C | 74 mm |
| March | 11.8°C | 3.9°C | 7.8°C | 67 mm |
| April | 14.7°C | 5.4°C | 10.1°C | 64 mm |
| May | 18.0°C | 8.7°C | 13.3°C | 75 mm |
| June | 21.4°C | 11.4°C | 16.4°C | 63 mm |
| July | 23.5°C | 13.1°C | 18.3°C | 63 mm |
| August | 23.4°C | 13.1°C | 18.2°C | 63 mm |
| September | 20.4°C | 10.7°C | 15.6°C | 72 mm |
| October | 15.9°C | 8.5°C | 12.2°C | 93 mm |
| November | 11.1°C | 5.1°C | 8.1°C | 97 mm |
| December | 8.3°C | 2.7°C | 5.5°C | 108 mm |
| Year | 15.4°C | 7.3°C | 11.3°C | 929 mm |
Where Hercé’s numbers come from
Averages over 30 years, not a forecast.
- Temperature, rain and day counts: Météo-France’s fiche climatologique for Saint-Mars/la-Futa, 12 km away: statistics for 1991–2020 (the station’s own years, 1991–2019, 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.
- Comparisons: every town of 2,500 or more in mainland France, read the same way; the dots are the towns of 2,500+ in Mayenne.
Météo-France fiches climatologiques · IGN RGE ALTI®. Licence Ouverte 2.0.
Questions about Hercé’s climate
How warm does Hercé get in summer?
July is the warmest month, with average highs of 23.5°C. About 32 days a year reach 25°C, fewer than 90% of mainland French towns, and about 6 reach 30°C.
How cold does Hercé get in winter?
February nights average 2.2°C. The air drops to 0°C or below on about 36 nights a year, and about 2 days a year stay below freezing all day.
How much rain does Hercé get?
About 929 mm a year, more than 82% of mainland French towns. December is the wettest month (108 mm) and July the driest (63 mm).
Are these figures for Hercé itself?
No: they are the normals of the Météo-France station matched to Hercé, Saint-Mars/la-Futa, 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 ST-MARS/LA-FUTA, edited 15/10/2026); altitude: IGN, RGE ALTI®. Licence Ouverte 2.0. Today’s forecast for Hercé →
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.