In Bonchamp-lès-Laval, July heat, January chill and rainfall all sit near the middle of mainland French towns
A typical January night drops to 2.2°C and a July afternoon reaches 25.2°C; 781 mm of rain falls in a year. Rain peaks in December and eases off in July. Days of 25°C are scarce: about 50 a year, fewer than in 68% of mainland French towns. Long walks are most pleasant from May to September, when afternoons reach 20–25°C.
Figures from Météo-France’s Argentré station, 4.4 km north-east.
A year in Bonchamp-lès-Laval at a glance
Each month’s typical high and low in °C, at the Argentré station.
What a year in Bonchamp-lès-Laval feels like
Typical highs and lows by season and by month, from Météo-France’s 1991–2020 normals at Argentré.
About 781 mm of rain a year
December is the wettest month and July the driest. About 22 days a year bring 10 mm or more. 11th wettest of 19 towns of 2,500+ in Mayenne.
Rain by month
Millimeters
45 frosts and 50 days of 25°C a year
On about 45 nights a year the air drops to 0°C or below, and on about 2 days it stays below freezing all day. About 50 days a year reach 25°C, and 11 reach 30°C.
Day counts are Météo-France’s 1991–2020 normals at Argentré: 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 Argentré
Argentré is 4.4 km north-east of Bonchamp-lès-Laval. Every figure on this page is the station’s, not a measurement in Bonchamp-lès-Laval itself.
| Station (Météo-France number) | Argentré (53007001) |
| Distance from the town | 4.4 km north-east |
| Station altitude | 107 m |
| Town altitude (its center) | 84 m |
| Period | 1991–2020 |
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 Bonchamp-lès-Laval 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 |
|---|---|---|---|---|
| Bonchamp-lès-Laval | Argentré | 25.2°C | 2.2°C | 781 mm |
| Argentré 4.6 km | same station | 25.2°C about the same | 2.2°C about the same | 781 mm |
| Louverné 5.2 km | same station | 25.2°C about the same | 2.2°C about the same | 781 mm |
| Laval 5.2 km | Laval-Etronnier | 24.6°C 0.6°C cooler | 2.7°C 0.5°C milder | 757 mm |
| Changé 6.9 km | Laval-Etronnier | 24.6°C 0.6°C cooler | 2.7°C 0.5°C milder | 757 mm |
| L'Huisserie 7.5 km | Laval-Etronnier | 24.6°C 0.6°C cooler | 2.7°C 0.5°C milder | 757 mm |
| Saint-Berthevin 9.4 km | Laval-Etronnier | 24.6°C 0.6°C cooler | 2.7°C 0.5°C milder | 757 mm |
Bonchamp-lès-Laval weather by month
Average daily high and low, mean temperature and rain, 1991–2020, at the Argentré station.
| Month | High | Low | Mean | Rain |
|---|---|---|---|---|
| January | 8.3°C | 2.2°C | 5.3°C | 79 mm |
| February | 9.6°C | 1.8°C | 5.7°C | 60 mm |
| March | 12.9°C | 3.5°C | 8.2°C | 56 mm |
| April | 16.1°C | 5.1°C | 10.6°C | 56 mm |
| May | 19.6°C | 8.5°C | 14.0°C | 58 mm |
| June | 23.0°C | 11.4°C | 17.2°C | 53 mm |
| July | 25.2°C | 12.9°C | 19.0°C | 51 mm |
| August | 25.3°C | 12.9°C | 19.1°C | 52 mm |
| September | 21.9°C | 10.3°C | 16.1°C | 65 mm |
| October | 16.8°C | 8.2°C | 12.5°C | 80 mm |
| November | 11.7°C | 4.7°C | 8.2°C | 79 mm |
| December | 8.7°C | 2.5°C | 5.6°C | 91 mm |
| Year | 16.6°C | 7.0°C | 11.8°C | 781 mm |
Where Bonchamp-lès-Laval’s numbers come from
Averages over 30 years, not a forecast.
- Temperature, rain and day counts: Météo-France’s fiche climatologique for Argentré, 4.4 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.
- 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 Bonchamp-lès-Laval’s climate
How warm does Bonchamp-lès-Laval get in summer?
August is the warmest month, with average highs of 25.3°C. About 50 days a year reach 25°C, fewer than 68% of mainland French towns, and about 11 reach 30°C.
How cold does Bonchamp-lès-Laval get in winter?
February nights average 1.8°C. The air drops to 0°C or below on about 45 nights a year, and about 2 days a year stay below freezing all day.
How much rain does Bonchamp-lès-Laval get?
About 781 mm a year, more than 55% of mainland French towns. December is the wettest month (91 mm) and July the driest (51 mm).
Are these figures for Bonchamp-lès-Laval itself?
No: they are the normals of the Météo-France station matched to Bonchamp-lès-Laval, Argentré, 4.4 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 ARGENTRE, edited 15/10/2026); altitude: IGN, RGE ALTI®. Licence Ouverte 2.0. Today’s forecast for Bonchamp-lès-Laval →
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.