Warm afternoons come to Bois-Grenier less often than to 88% of mainland French towns
The depth of winter brings overnight lows near 1.7°C. Seasons differ by 22°C, from the coldest nights to the warmest afternoons. Windscreens need scraping on about 37 mornings a year, the nights the air drops below 0°C.
These are the figures of Météo-France’s Lille-Lesquin station, 18 km south-east.
A year in Bois-Grenier at a glance
Each month’s typical high and low in °C, at the Lille-Lesquin station.
What a year in Bois-Grenier feels like
Typical highs and lows by season and by month, from Météo-France’s 1991–2020 normals at Lille-Lesquin.
About 740 mm of rain a year
November is the wettest month and April the driest. About 20 days a year bring 10 mm or more. 15th wettest of 200 towns of 2,500+ in Nord.
Rain by month
Millimeters
Sunshine by month
Hours of sunshine at Lille-Lesquin
37 frosts and 34 days of 25°C a year
On about 37 nights a year the air drops to 0°C or below, and on about 6 days it stays below freezing all day. About 34 days a year reach 25°C, and 7 reach 30°C.
Day counts are Météo-France’s 1991–2020 normals at Lille-Lesquin: 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 Lille-Lesquin
Lille-Lesquin is 18 km south-east of Bois-Grenier. Every figure on this page is the station’s, not a measurement in Bois-Grenier itself.
| Station (Météo-France number) | Lille-Lesquin (59343001) |
| Distance from the town | 18 km south-east |
| Station altitude | 47 m |
| Town altitude (its center) | 19 m |
| Period | 1991–2020 |
| 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 Bois-Grenier 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 Nord.
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 |
|---|---|---|---|---|
| Bois-Grenier | Lille-Lesquin | 23.7°C | 1.7°C | 740 mm |
| Fleurbaix 2.8 km | same station | 23.7°C about the same | 1.7°C about the same | 740 mm |
| La Chapelle-d'Armentières 3 km | same station | 23.7°C about the same | 1.7°C about the same | 740 mm |
| Erquinghem-Lys 3.7 km | same station | 23.7°C about the same | 1.7°C about the same | 740 mm |
| Armentières 4.7 km | same station | 23.7°C about the same | 1.7°C about the same | 740 mm |
| Houplines 5.4 km | same station | 23.7°C about the same | 1.7°C about the same | 740 mm |
| Nieppe 6.2 km | same station | 23.7°C about the same | 1.7°C about the same | 740 mm |
Bois-Grenier weather by month
Average daily high and low, mean temperature and rain, 1991–2020, at the Lille-Lesquin station.
| Month | High | Low | Mean | Rain | Sun (hours) |
|---|---|---|---|---|---|
| January | 6.6°C | 1.7°C | 4.1°C | 58 mm | 62 |
| February | 7.5°C | 1.9°C | 4.7°C | 51 mm | 74 |
| March | 11.2°C | 3.8°C | 7.5°C | 52 mm | 127 |
| April | 15.0°C | 5.9°C | 10.5°C | 45 mm | 176 |
| May | 18.4°C | 9.3°C | 13.8°C | 62 mm | 196 |
| June | 21.3°C | 12.1°C | 16.7°C | 64 mm | 202 |
| July | 23.7°C | 14.2°C | 18.9°C | 68 mm | 210 |
| August | 23.7°C | 14.0°C | 18.8°C | 71 mm | 197 |
| September | 20.2°C | 11.4°C | 15.8°C | 57 mm | 155 |
| October | 15.4°C | 8.4°C | 11.9°C | 64 mm | 115 |
| November | 10.3°C | 4.9°C | 7.6°C | 75 mm | 62 |
| December | 7.0°C | 2.3°C | 4.7°C | 73 mm | 53 |
| Year | 15.0°C | 7.5°C | 11.3°C | 740 mm | 1,627 |
Where Bois-Grenier’s numbers come from
Averages over 30 years, not a forecast.
- Temperature, rain and day counts: Météo-France’s fiche climatologique for Lille-Lesquin, 18 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, Lille-Lesquin, 18 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 Nord.
Météo-France fiches climatologiques · IGN RGE ALTI®. Licence Ouverte 2.0.
Questions about Bois-Grenier’s climate
How warm does Bois-Grenier get in summer?
July is the warmest month, with average highs of 23.7°C. About 34 days a year reach 25°C, fewer than 88% of mainland French towns, and about 7 reach 30°C.
How cold does Bois-Grenier get in winter?
January nights average 1.7°C. The air drops to 0°C or below on about 37 nights a year, and about 6 days a year stay below freezing all day.
How much rain does Bois-Grenier get?
About 740 mm a year, less than 56% of mainland French towns. November is the wettest month (75 mm) and April the driest (45 mm).
How sunny is it?
The nearest Météo-France station that records sunshine, Lille-Lesquin (18 km away), averages 1,627 hours of sunshine a year.
Are these figures for Bois-Grenier itself?
No: they are the normals of the Météo-France station matched to Bois-Grenier, Lille-Lesquin, 18 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 LILLE-LESQUIN, edited 15/10/2026); altitude: IGN, RGE ALTI®. Licence Ouverte 2.0. Today’s forecast for Bois-Grenier →
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.