Less rain falls on Saint-Gratien than on 93% of mainland French towns: 616 mm a year
In January the night’s low is typically 2.3°C. Only 23°C separates winter nights from summer afternoons. Only about 51 days a year reach 25°C, fewer than in 67% of mainland French towns. An umbrella earns its place on about 110 days a year with 1 mm of rain or more.
These are the figures of Météo-France’s Le Bourget station, 10 km east.
A year in Saint-Gratien at a glance
Each month’s typical high and low in °C, at the Le Bourget station.
What a year in Saint-Gratien feels like
Typical highs and lows by season and by month, from Météo-France’s 1991–2020 normals at Le Bourget.
About 616 mm of rain a year
December is the wettest month and February the driest. About 16 days a year bring 10 mm or more. 51st wettest of 76 towns of 2,500+ in Val-d'Oise.
Rain by month
Millimeters
Sunshine by month
Hours of sunshine at Le Bourget
37 frosts and 51 days of 25°C a year
On about 37 nights a year the air drops to 0°C or below, and on about 3 days it stays below freezing all day. About 51 days a year reach 25°C, and 13 reach 30°C.
Day counts are Météo-France’s 1991–2020 normals at Le Bourget: 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 Le Bourget
Le Bourget is 10 km east of Saint-Gratien. Every figure on this page is the station’s, not a measurement in Saint-Gratien itself.
| Station (Météo-France number) | Le Bourget (95088001) |
| Distance from the town | 10 km east |
| Station altitude | 49 m |
| Town altitude (its center) | 45 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 Saint-Gratien 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 Val-d'Oise.
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 |
|---|---|---|---|---|
| Saint-Gratien | Le Bourget | 25.5°C | 2.3°C | 616 mm |
| Enghien-les-Bains 1.6 km | same station | 25.5°C about the same | 2.3°C about the same | 616 mm |
| Épinay-sur-Seine 2.3 km | same station | 25.5°C about the same | 2.3°C about the same | 616 mm |
| Sannois 2.4 km | same station | 25.5°C about the same | 2.3°C about the same | 616 mm |
| Soisy-sous-Montmorency 2.7 km | same station | 25.5°C about the same | 2.3°C about the same | 616 mm |
| Eaubonne 2.8 km | same station | 25.5°C about the same | 2.3°C about the same | 616 mm |
| Deuil-la-Barre 3 km | same station | 25.5°C about the same | 2.3°C about the same | 616 mm |
Saint-Gratien weather by month
Average daily high and low, mean temperature and rain, 1991–2020, at the Le Bourget station.
| Month | High | Low | Mean | Rain | Sun (hours) |
|---|---|---|---|---|---|
| January | 7.5°C | 2.3°C | 4.9°C | 47 mm | 57 |
| February | 8.7°C | 2.1°C | 5.4°C | 41 mm | 74 |
| March | 12.6°C | 4.2°C | 8.4°C | 44 mm | 129 |
| April | 16.1°C | 6.3°C | 11.2°C | 43 mm | 171 |
| May | 19.6°C | 9.8°C | 14.7°C | 61 mm | 189 |
| June | 23.0°C | 13.0°C | 18.0°C | 54 mm | 203 |
| July | 25.5°C | 14.9°C | 20.2°C | 56 mm | 213 |
| August | 25.4°C | 14.6°C | 20.0°C | 53 mm | 206 |
| September | 21.5°C | 11.5°C | 16.5°C | 45 mm | 162 |
| October | 16.5°C | 8.8°C | 12.7°C | 57 mm | 111 |
| November | 11.1°C | 5.2°C | 8.1°C | 54 mm | 64 |
| December | 7.9°C | 2.8°C | 5.4°C | 63 mm | 54 |
| Year | 16.3°C | 8.0°C | 12.1°C | 616 mm | 1,634 |
Where Saint-Gratien’s numbers come from
Averages over 30 years, not a forecast.
- Temperature, rain and day counts: Météo-France’s fiche climatologique for Le Bourget, 10 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, Le Bourget, 10 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 Val-d'Oise.
Météo-France fiches climatologiques · IGN RGE ALTI®. Licence Ouverte 2.0.
Questions about Saint-Gratien’s climate
How warm does Saint-Gratien get in summer?
July is the warmest month, with average highs of 25.5°C. About 51 days a year reach 25°C, fewer than 67% of mainland French towns, and about 13 reach 30°C.
How cold does Saint-Gratien get in winter?
February nights average 2.1°C. The air drops to 0°C or below on about 37 nights a year, and about 3 days a year stay below freezing all day.
How much rain does Saint-Gratien get?
About 616 mm a year, less than 93% of mainland French towns. December is the wettest month (63 mm) and February the driest (41 mm).
How sunny is it?
The nearest Météo-France station that records sunshine, Le Bourget (10 km away), averages 1,634 hours of sunshine a year.
Are these figures for Saint-Gratien itself?
No: they are the normals of the Météo-France station matched to Saint-Gratien, Le Bourget, 10 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 LE BOURGET, edited 15/10/2026); altitude: IGN, RGE ALTI®. Licence Ouverte 2.0. Today’s forecast for Saint-Gratien →
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.