Summers in Le Tartre-Gaudran are cooler than in 75% of mainland French towns
Nights in January average 1.3°C. Only 24°C separates winter nights from summer afternoons. About 54 nights a year bring a frost, more than in 74% of mainland French towns. Gritters and ice scrapers earn their keep on roughly 54 nights a year below 0°C.
Figures from Météo-France’s Saint-Léger station, 11 km east.
A year in Le Tartre-Gaudran at a glance
Each month’s typical high and low in °C, at the Saint-Léger station.
What a year in Le Tartre-Gaudran feels like
Typical highs and lows by season and by month, from Météo-France’s 1991–2020 normals at Saint-Léger.
About 706 mm of rain a year
December is the wettest month and March the driest. About 19 days a year bring 10 mm or more. 3rd wettest of 95 towns of 2,500+ in Yvelines.
Rain by month
Millimeters
Sunshine by month
Hours of sunshine at Chartres
A frosty town: 54 frosts and 46 days of 25°C a year
On about 54 nights a year the air drops to 0°C or below, and on about 5 days it stays below freezing all day. About 46 days a year reach 25°C, and 10 reach 30°C.
Day counts are Météo-France’s 1991–2020 normals at Saint-Léger: 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 Saint-Léger
Saint-Léger is 11 km east of Le Tartre-Gaudran. Every figure on this page is the station’s, not a measurement in Le Tartre-Gaudran itself.
| Station (Météo-France number) | Saint-Léger (78562001) |
| Distance from the town | 11 km east |
| Station altitude | 176 m |
| Town altitude (its center) | 144 m |
| Period | 1992–2020 (the station’s own record) |
| Sunshine measured at | Chartres, 28 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 Le Tartre-Gaudran 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 Yvelines.
Nearby towns’ climate
The nearest towns of 2,500+ within 29 km, each with its own matched station.
| Town | Station | July high | January low | Rain a year |
|---|---|---|---|---|
| Le Tartre-Gaudran | Saint-Léger | 24.8°C | 1.3°C | 706 mm |
| Nogent-le-Roi 8.4 km | Houx | 25.7°C 0.9°C warmer | 1.2°C about the same | 622 mm |
| Houdan 10 km | Bû | 25.1°C about the same | 1.7°C about the same | 633 mm |
| Gambais 11 km | Bû | 25.1°C about the same | 1.7°C about the same | 633 mm |
| Hanches 11 km | Houx | 25.7°C 0.9°C warmer | 1.2°C about the same | 622 mm |
| Épernon 12 km | Houx | 25.7°C 0.9°C warmer | 1.2°C about the same | 622 mm |
| Pierres 12 km | Houx | 25.7°C 0.9°C warmer | 1.2°C about the same | 622 mm |
Le Tartre-Gaudran weather by month
Average daily high and low, mean temperature and rain, 1991–2020, at the Saint-Léger station; sunshine at Chartres.
| Month | High | Low | Mean | Rain | Sun (hours) |
|---|---|---|---|---|---|
| January | 6.8°C | 1.3°C | 4.0°C | 58 mm | 64 |
| February | 8.1°C | 1.2°C | 4.6°C | 50 mm | 88 |
| March | 12.1°C | 2.8°C | 7.4°C | 50 mm | 140 |
| April | 15.7°C | 4.7°C | 10.2°C | 51 mm | 184 |
| May | 19.0°C | 8.0°C | 13.5°C | 74 mm | 209 |
| June | 22.5°C | 11.0°C | 16.8°C | 57 mm | 222 |
| July | 24.8°C | 12.7°C | 18.8°C | 54 mm | 230 |
| August | 24.8°C | 12.6°C | 18.7°C | 60 mm | 220 |
| September | 20.9°C | 9.9°C | 15.4°C | 51 mm | 181 |
| October | 15.8°C | 7.6°C | 11.7°C | 64 mm | 118 |
| November | 10.3°C | 4.0°C | 7.1°C | 64 mm | 72 |
| December | 6.9°C | 1.7°C | 4.3°C | 75 mm | 60 |
| Year | 15.6°C | 6.5°C | 11.0°C | 706 mm | 1,787 |
Where Le Tartre-Gaudran’s numbers come from
Averages over 30 years, not a forecast.
- Temperature, rain and day counts: Météo-France’s fiche climatologique for Saint-Léger, 11 km away: statistics for 1991–2020 (the station’s own years, 1992–2020, where its record is shorter).
- 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, 28 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 Yvelines.
Météo-France fiches climatologiques · IGN RGE ALTI®. Licence Ouverte 2.0.
Questions about Le Tartre-Gaudran’s climate
How warm does Le Tartre-Gaudran get in summer?
July is the warmest month, with average highs of 24.8°C. About 46 days a year reach 25°C, fewer than 74% of mainland French towns, and about 10 reach 30°C.
How cold does Le Tartre-Gaudran get in winter?
February nights average 1.2°C. The air drops to 0°C or below on about 54 nights a year, and about 5 days a year stay below freezing all day.
How much rain does Le Tartre-Gaudran get?
About 706 mm a year, less than 66% of mainland French towns. December is the wettest month (75 mm) and March the driest (50 mm).
How sunny is it?
The nearest Météo-France station that records sunshine, Chartres (28 km away), averages 1,787 hours of sunshine a year.
Are these figures for Le Tartre-Gaudran itself?
No: they are the normals of the Météo-France station matched to Le Tartre-Gaudran, Saint-Léger, 11 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 ST-LEGER_SAPC, edited 15/10/2026); altitude: IGN, RGE ALTI®. Licence Ouverte 2.0. Today’s forecast for Le Tartre-Gaudran →
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.