Photo: ℍenry Salomé · CC BY-SA 3.0Garancières is drier than 85% of mainland French towns: 642 mm of rain a year
Peak summer warmth arrives in July, with afternoons near 25.5°C. By warm days alone, it ranks cooler than 69% of mainland French towns. Only 24°C separates winter nights from summer afternoons. Keep the boiler serviced for the months from November to March, which average under 10°C.
These are the figures of Météo-France’s Magnanville station, 17 km north.
A year in Garancières at a glance
Each month’s typical high and low in °C, at the Magnanville station.
What a year in Garancières feels like
Typical highs and lows by season and by month, from Météo-France’s 1991–2020 normals at Magnanville.
About 642 mm of rain a year
December is the wettest month and September the driest. About 16 days a year bring 10 mm or more. 70th wettest of 95 towns of 2,500+ in Yvelines.
Rain by month
Millimeters
Sunshine by month
Hours of sunshine at Trappes
40 frosts and 49 days of 25°C a year
On about 40 nights a year the air drops to 0°C or below, and on about 4 days it stays below freezing all day. About 49 days a year reach 25°C, and 12 reach 30°C.
Day counts are Météo-France’s 1991–2020 normals at Magnanville: 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 Magnanville
Magnanville is 17 km north of Garancières. Every figure on this page is the station’s, not a measurement in Garancières itself.
| Station (Météo-France number) | Magnanville (78354001) |
| Distance from the town | 17 km north |
| Station altitude | 123 m |
| Town altitude (its center) | 104 m |
| Period | 1995–2020 (the station’s own record) |
| Nearest station of any kind | 12 km |
| Sunshine measured at | Trappes, 19 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 Garancières 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 |
|---|---|---|---|---|
| Garancières | Magnanville | 25.5°C | 1.7°C | 642 mm |
| La Queue-les-Yvelines 2 km | Saint-Léger | 24.8°C 0.7°C cooler | 1.3°C about the same | 706 mm |
| Montfort-l'Amaury 6.3 km | Saint-Léger | 24.8°C 0.7°C cooler | 1.3°C about the same | 706 mm |
| Gambais 7.3 km | Bû | 25.1°C about the same | 1.7°C about the same | 633 mm |
| Villiers-Saint-Frédéric 9.7 km | Trappes | 24.6°C 0.9°C cooler | 1.9°C about the same | 686 mm |
| Beynes 10 km | Maule | 26.2°C 0.7°C warmer | 1.7°C about the same | 677 mm |
| Neauphle-le-Château 11 km | Trappes | 24.6°C 0.9°C cooler | 1.9°C about the same | 686 mm |
Garancières weather by month
Average daily high and low, mean temperature and rain, 1991–2020, at the Magnanville station; sunshine at Trappes.
| Month | High | Low | Mean | Rain | Sun (hours) |
|---|---|---|---|---|---|
| January | 6.8°C | 1.7°C | 4.3°C | 49 mm | 57 |
| February | 8.4°C | 1.8°C | 5.1°C | 48 mm | 81 |
| March | 12.1°C | 3.6°C | 7.8°C | 48 mm | 134 |
| April | 15.8°C | 5.5°C | 10.7°C | 43 mm | 176 |
| May | 19.1°C | 8.6°C | 13.9°C | 62 mm | 202 |
| June | 22.8°C | 11.6°C | 17.2°C | 54 mm | 210 |
| July | 25.5°C | 13.4°C | 19.5°C | 52 mm | 222 |
| August | 25.3°C | 13.6°C | 19.5°C | 57 mm | 216 |
| September | 21.4°C | 10.9°C | 16.2°C | 41 mm | 177 |
| October | 16.5°C | 8.6°C | 12.5°C | 65 mm | 117 |
| November | 10.7°C | 4.8°C | 7.7°C | 57 mm | 68 |
| December | 7.2°C | 2.3°C | 4.8°C | 67 mm | 55 |
| Year | 16.0°C | 7.2°C | 11.6°C | 642 mm | 1,714 |
Where Garancières’s numbers come from
Averages over 30 years, not a forecast.
- Temperature, rain and day counts: Météo-France’s fiche climatologique for Magnanville, 17 km away: statistics for 1991–2020 (the station’s own years, 1995–2020, 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, Trappes, 19 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 Garancières’s climate
How warm does Garancières get in summer?
July is the warmest month, with average highs of 25.5°C. About 49 days a year reach 25°C, fewer than 69% of mainland French towns, and about 12 reach 30°C.
How cold does Garancières get in winter?
January nights average 1.7°C. The air drops to 0°C or below on about 40 nights a year, and about 4 days a year stay below freezing all day.
How much rain does Garancières get?
About 642 mm a year, less than 85% of mainland French towns. December is the wettest month (67 mm) and September the driest (41 mm).
How sunny is it?
The nearest Météo-France station that records sunshine, Trappes (19 km away), averages 1,714 hours of sunshine a year.
Are these figures for Garancières itself?
No: they are the normals of the Météo-France station matched to Garancières, Magnanville, 17 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 MAGNANVILLE, edited 15/10/2026); altitude: IGN, RGE ALTI®. Licence Ouverte 2.0. Today’s forecast for Garancières →
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.