Fewer days reach 25 degrees in Saint-Léger than in 73% of mainland French towns
In January the night’s low is typically 1.3°C. It is a dry place: less rain falls here than on 68% of mainland French towns. Of all months, December brings the most rain and March the least. Warm coats and heating bills mark the months from November to March, when means dip under 10°C.
Figures from Météo-France’s Chevru station, 14 km south.
A year in Saint-Léger at a glance
Each month’s typical high and low in °C, at the Chevru station.
What a year in Saint-Léger feels like
Typical highs and lows by season and by month, from Météo-France’s 1991–2020 normals at Chevru.
About 698 mm of rain a year
December is the wettest month and March the driest. About 18 days a year bring 10 mm or more. 75th wettest of 116 towns of 2,500+ in Seine-et-Marne.
Rain by month
Millimeters
Sunshine by month
Hours of sunshine at Melun
48 frosts and 47 days of 25°C a year
On about 48 nights a year the air drops to 0°C or below, and on about 6 days it stays below freezing all day. About 47 days a year reach 25°C, and 12 reach 30°C.
Day counts are Météo-France’s 1991–2020 normals at Chevru: 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 Chevru
Chevru is 14 km south of Saint-Léger. Every figure on this page is the station’s, not a measurement in Saint-Léger itself.
| Station (Météo-France number) | Chevru (77113002) |
| Distance from the town | 14 km south |
| Station altitude | 158 m |
| Town altitude (its center) | 169 m |
| Period | 1991–2020 |
| Nearest station of any kind | 9.5 km |
| Sunshine measured at | Melun, 51 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-Léger 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 Seine-et-Marne.
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-Léger | Chevru | 25.3°C | 1.3°C | 698 mm |
| La Ferté-Gaucher 7.5 km | same station | 25.3°C about the same | 1.3°C about the same | 698 mm |
| Boissy-le-Châtel 11 km | Mouroux | 25.0°C about the same | 1.3°C about the same | 721 mm |
| Jouarre 13 km | Mouroux | 25.0°C about the same | 1.3°C about the same | 721 mm |
| Charly-sur-Marne 14 km | Saint-Cyr/Morin-Bg | 25.5°C about the same | 1.0°C about the same | 815 mm |
| Coulommiers 14 km | Mouroux | 25.0°C about the same | 1.3°C about the same | 721 mm |
| La Ferté-sous-Jouarre 15 km | Ussy-sur-Marne | 25.9°C 0.6°C warmer | 0.9°C about the same | 727 mm |
Saint-Léger weather by month
Average daily high and low, mean temperature and rain, 1991–2020, at the Chevru station; sunshine at Melun.
| Month | High | Low | Mean | Rain | Sun (hours) |
|---|---|---|---|---|---|
| January | 6.1°C | 1.3°C | 3.7°C | 58 mm | 60 |
| February | 7.4°C | 1.3°C | 4.4°C | 53 mm | 83 |
| March | 11.7°C | 3.3°C | 7.5°C | 51 mm | 143 |
| April | 15.3°C | 5.1°C | 10.2°C | 52 mm | 188 |
| May | 19.0°C | 8.7°C | 13.9°C | 67 mm | 216 |
| June | 22.5°C | 11.5°C | 17.0°C | 52 mm | 226 |
| July | 25.3°C | 13.3°C | 19.3°C | 56 mm | 235 |
| August | 25.3°C | 13.2°C | 19.2°C | 56 mm | 225 |
| September | 21.0°C | 10.4°C | 15.7°C | 56 mm | 180 |
| October | 15.7°C | 7.8°C | 11.8°C | 65 mm | 119 |
| November | 9.9°C | 4.2°C | 7.1°C | 61 mm | 68 |
| December | 6.7°C | 2.0°C | 4.4°C | 72 mm | 54 |
| Year | 15.5°C | 6.8°C | 11.2°C | 698 mm | 1,798 |
Where Saint-Léger’s numbers come from
Averages over 30 years, not a forecast.
- Temperature, rain and day counts: Météo-France’s fiche climatologique for Chevru, 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, Melun, 51 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 Seine-et-Marne.
Météo-France fiches climatologiques · IGN RGE ALTI®. Licence Ouverte 2.0.
Questions about Saint-Léger’s climate
How warm does Saint-Léger get in summer?
July is the warmest month, with average highs of 25.3°C. About 47 days a year reach 25°C, fewer than 73% of mainland French towns, and about 12 reach 30°C.
How cold does Saint-Léger get in winter?
January nights average 1.3°C. The air drops to 0°C or below on about 48 nights a year, and about 6 days a year stay below freezing all day.
How much rain does Saint-Léger get?
About 698 mm a year, less than 68% of mainland French towns. December is the wettest month (72 mm) and March the driest (51 mm).
How sunny is it?
The nearest Météo-France station that records sunshine, Melun (51 km away), averages 1,798 hours of sunshine a year.
Are these figures for Saint-Léger itself?
No: they are the normals of the Météo-France station matched to Saint-Léger, Chevru, 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 CHEVRU, edited 15/10/2026); altitude: IGN, RGE ALTI®. Licence Ouverte 2.0. Today’s forecast for Saint-Léger →
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.