No extremes in Saint-Mars-du-Désert: its weather tracks the middle of mainland French towns
A typical July afternoon reaches 25.2°C, a January night drops to 2.1°C, and 804 mm of rain falls in a year. The rainiest month is December; the driest is August. Frost is common: about 49 nights a year drop below freezing, more than in 68% of mainland French towns. Waterproofs come out on about 122 days a year, each with 1 mm of rain or more.
These are the figures of Météo-France’s Évron station, 22 km south-west.
A year in Saint-Mars-du-Désert at a glance
Each month’s typical high and low in °C, at the Évron station.
What a year in Saint-Mars-du-Désert feels like
Typical highs and lows by season and by month, from Météo-France’s 1991–2020 normals at Évron.
About 804 mm of rain a year
December is the wettest month and August the driest. About 24 days a year bring 10 mm or more. 5th wettest of 19 towns of 2,500+ in Mayenne.
Rain by month
Millimeters
Sunshine by month
Hours of sunshine at Alençon
49 frosts and 51 days of 25°C a year
On about 49 nights a year the air drops to 0°C or below, and on about 2 days it stays below freezing all day. About 51 days a year reach 25°C, and 13 reach 30°C.
Day counts are Météo-France’s 1991–2020 normals at Évron: 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 Évron
Évron is 22 km south-west of Saint-Mars-du-Désert. Every figure on this page is the station’s, not a measurement in Saint-Mars-du-Désert itself.
| Station (Météo-France number) | Évron (53097001) |
| Distance from the town | 22 km south-west |
| Station altitude | 107 m |
| Town altitude (its center) | 143 m |
| Period | 1991–2020 |
| Nearest station of any kind | 18 km |
| Sunshine measured at | Alençon, 26 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 Saint-Mars-du-Désert 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. 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 |
|---|---|---|---|---|
| Saint-Mars-du-Désert | Évron | 25.2°C | 2.1°C | 804 mm |
| Villaines-la-Juhel 10 km | same station | 25.2°C about the same | 2.1°C about the same | 804 mm |
| Fresnay-sur-Sarthe 18 km | Alençon | 24.3°C 0.9°C cooler | 2.1°C about the same | 744 mm |
| Saint-Germain-du-Corbéis 22 km | Alençon | 24.3°C 0.9°C cooler | 2.1°C about the same | 744 mm |
| Évron 24 km | same station | 25.2°C about the same | 2.1°C about the same | 804 mm |
| Alençon 24 km | Alençon | 24.3°C 0.9°C cooler | 2.1°C about the same | 744 mm |
Saint-Mars-du-Désert weather by month
Average daily high and low, mean temperature and rain, 1991–2020, at the Évron station; sunshine at Alençon.
| Month | High | Low | Mean | Rain | Sun (hours) |
|---|---|---|---|---|---|
| January | 8.1°C | 2.1°C | 5.1°C | 81 mm | 60 |
| February | 9.4°C | 1.7°C | 5.5°C | 66 mm | 89 |
| March | 12.8°C | 3.4°C | 8.1°C | 58 mm | 134 |
| April | 16.0°C | 5.0°C | 10.5°C | 56 mm | 174 |
| May | 19.6°C | 8.5°C | 14.0°C | 61 mm | 198 |
| June | 23.0°C | 11.3°C | 17.1°C | 56 mm | 215 |
| July | 25.2°C | 12.9°C | 19.0°C | 53 mm | 222 |
| August | 25.2°C | 12.7°C | 19.0°C | 52 mm | 214 |
| September | 21.8°C | 10.0°C | 15.9°C | 64 mm | 174 |
| October | 16.6°C | 8.1°C | 12.4°C | 80 mm | 112 |
| November | 11.6°C | 4.6°C | 8.1°C | 84 mm | 73 |
| December | 8.6°C | 2.3°C | 5.5°C | 94 mm | 63 |
| Year | 16.5°C | 6.9°C | 11.7°C | 804 mm | 1,727 |
Where Saint-Mars-du-Désert’s numbers come from
Averages over 30 years, not a forecast.
- Temperature, rain and day counts: Météo-France’s fiche climatologique for Évron, 22 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, Alençon, 26 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 Mayenne.
Météo-France fiches climatologiques · IGN RGE ALTI®. Licence Ouverte 2.0.
Questions about Saint-Mars-du-Désert’s climate
How warm does Saint-Mars-du-Désert get in summer?
July is the warmest month, with average highs of 25.2°C. About 51 days a year reach 25°C, fewer than 66% of mainland French towns, and about 13 reach 30°C.
How cold does Saint-Mars-du-Désert get in winter?
February nights average 1.7°C. The air drops to 0°C or below on about 49 nights a year, and about 2 days a year stay below freezing all day.
How much rain does Saint-Mars-du-Désert get?
About 804 mm a year, more than 61% of mainland French towns. December is the wettest month (94 mm) and August the driest (52 mm).
How sunny is it?
The nearest Météo-France station that records sunshine, Alençon (26 km away), averages 1,727 hours of sunshine a year.
Are these figures for Saint-Mars-du-Désert itself?
No: they are the normals of the Météo-France station matched to Saint-Mars-du-Désert, Évron, 22 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 EVRON, edited 15/10/2026); altitude: IGN, RGE ALTI®. Licence Ouverte 2.0. Today’s forecast for Saint-Mars-du-Désert →
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.