Frost comes to Les Châtelets more often than to 94% of mainland French towns
Expect July afternoons of about 25.2°C. The gap between a January night and a July afternoon is 26°C. By rainfall alone, it ranks drier than 80% of mainland French towns. An umbrella earns its place on about 118 days a year with 1 mm of rain or more.
Figures from Météo-France’s Rueil station, 7.1 km north-west.
A year in Les Châtelets at a glance
Each month’s typical high and low in °C, at the Rueil station.
What a year in Les Châtelets feels like
Typical highs and lows by season and by month, from Météo-France’s 1991–2020 normals at Rueil.
About 663 mm of rain a year
December is the wettest month and April the driest. About 16 days a year bring 10 mm or more. 5th wettest of 33 towns of 2,500+ in Eure-et-Loir.
Rain by month
Millimeters
Sunshine by month
Hours of sunshine at Chartres
A frosty town: 79 frosts and 53 days of 25°C a year
On about 79 nights a year the air drops to 0°C or below, and on about 4 days it stays below freezing all day. About 53 days a year reach 25°C, and 13 reach 30°C.
Day counts are Météo-France’s 1991–2020 normals at Rueil: 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 Rueil
Rueil is 7.1 km north-west of Les Châtelets. Every figure on this page is the station’s, not a measurement in Les Châtelets itself.
| Station (Météo-France number) | Rueil (28322001) |
| Distance from the town | 7.1 km north-west |
| Station altitude | 157 m |
| Town altitude (its center) | 173 m |
| Period | 1991–2020 |
| Sunshine measured at | Chartres, 42 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 Les Châtelets 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 Eure-et-Loir.
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 |
|---|---|---|---|---|
| Les Châtelets | Rueil | 25.2°C | 0.6°C | 663 mm |
| Senonches 11 km | Senonches | 24.7°C 0.5°C cooler | 1.1°C 0.5°C milder | 817 mm |
| Verneuil d'Avre et d'Iton 12 km | same station | 25.2°C about the same | 0.6°C about the same | 663 mm |
| Saint-Lubin-des-Joncherets 17 km | Marville | 25.5°C about the same | 1.6°C 1°C milder | 572 mm |
| Châteauneuf-en-Thymerais 18 km | Thimert | 26.0°C 0.8°C warmer | 1.7°C 1.1°C milder | 635 mm |
| Saint-Rémy-sur-Avre 19 km | Marville | 25.5°C about the same | 1.6°C 1°C milder | 572 mm |
| Breteuil 20 km | Breteuil | 25.2°C about the same | 1.2°C 0.6°C milder | 698 mm |
Les Châtelets weather by month
Average daily high and low, mean temperature and rain, 1991–2020, at the Rueil station; sunshine at Chartres.
| Month | High | Low | Mean | Rain | Sun (hours) |
|---|---|---|---|---|---|
| January | 7.6°C | 0.6°C | 4.1°C | 59 mm | 64 |
| February | 8.9°C | −0.1°C | 4.4°C | 50 mm | 88 |
| March | 12.5°C | 1.4°C | 7.0°C | 48 mm | 140 |
| April | 16.1°C | 2.5°C | 9.3°C | 45 mm | 184 |
| May | 19.5°C | 6.1°C | 12.8°C | 57 mm | 209 |
| June | 22.9°C | 9.2°C | 16.0°C | 54 mm | 222 |
| July | 25.2°C | 11.1°C | 18.2°C | 55 mm | 230 |
| August | 25.4°C | 11.0°C | 18.2°C | 49 mm | 220 |
| September | 21.7°C | 8.2°C | 15.0°C | 50 mm | 181 |
| October | 16.5°C | 6.3°C | 11.4°C | 63 mm | 118 |
| November | 11.2°C | 3.2°C | 7.2°C | 63 mm | 72 |
| December | 7.9°C | 1.0°C | 4.4°C | 71 mm | 60 |
| Year | 16.3°C | 5.0°C | 10.7°C | 663 mm | 1,787 |
Where Les Châtelets’s numbers come from
Averages over 30 years, not a forecast.
- Temperature, rain and day counts: Météo-France’s fiche climatologique for Rueil, 7.1 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, Chartres, 42 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 Eure-et-Loir.
Météo-France fiches climatologiques · IGN RGE ALTI®. Licence Ouverte 2.0.
Questions about Les Châtelets’s climate
How warm does Les Châtelets get in summer?
August is the warmest month, with average highs of 25.4°C. About 53 days a year reach 25°C, fewer than 65% of mainland French towns, and about 13 reach 30°C.
How cold does Les Châtelets get in winter?
February nights average −0.1°C. The air drops to 0°C or below on about 79 nights a year, and about 4 days a year stay below freezing all day.
How much rain does Les Châtelets get?
About 663 mm a year, less than 80% of mainland French towns. December is the wettest month (71 mm) and April the driest (45 mm).
How sunny is it?
The nearest Météo-France station that records sunshine, Chartres (42 km away), averages 1,787 hours of sunshine a year.
Are these figures for Les Châtelets itself?
No: they are the normals of the Météo-France station matched to Les Châtelets, Rueil, 7.1 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 RUEIL, edited 15/10/2026); altitude: IGN, RGE ALTI®. Licence Ouverte 2.0. Today’s forecast for Les Châtelets →
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.