Sillery gets fewer days of 25 degrees or more than 78% of mainland French towns
In January the night’s low is typically 1.2°C. Winter nights are cold: in January they are colder than in 70% of mainland French towns. The rainiest month is December; the driest is April. Gritters and ice scrapers earn their keep on roughly 45 nights a year below 0°C.
These are the figures of Météo-France’s Mailly-Civc station, 4.9 km south.
A year in Sillery at a glance
Each month’s typical high and low in °C, at the Mailly-Civc station.
What a year in Sillery feels like
Typical highs and lows by season and by month, from Météo-France’s 1991–2020 normals at Mailly-Civc.
About 756 mm of rain a year
December is the wettest month and April the driest. About 22 days a year bring 10 mm or more. 4th wettest of 22 towns of 2,500+ in Marne.
Rain by month
Millimeters
Sunshine by month
Hours of sunshine at Charleville-Mez
45 frosts and 43 days of 25°C a year
On about 45 nights a year the air drops to 0°C or below, and on about 8 days it stays below freezing all day. About 43 days a year reach 25°C, and 9 reach 30°C.
Day counts are Météo-France’s 1991–2020 normals at Mailly-Civc: 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 Mailly-Civc
Mailly-Civc is 4.9 km south of Sillery. Every figure on this page is the station’s, not a measurement in Sillery itself.
| Station (Météo-France number) | Mailly-Civc (51338001) |
| Distance from the town | 4.9 km south |
| Station altitude | 182 m |
| Town altitude (its center) | 90 m |
| Period | 1991–2020 |
| Sunshine measured at | Charleville-Mez, 75 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 Sillery 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 Marne.
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 |
|---|---|---|---|---|
| Sillery | Mailly-Civc | 24.8°C | 1.2°C | 756 mm |
| Cormontreuil 6.7 km | same station | 24.8°C about the same | 1.2°C about the same | 756 mm |
| Reims 9.6 km | same station | 24.8°C about the same | 1.2°C about the same | 756 mm |
| Bezannes 10 km | Chambrecy-Civc | 25.4°C 0.6°C warmer | 0.4°C 0.8°C colder | 734 mm |
| Witry-lès-Reims 10 km | same station | 24.8°C about the same | 1.2°C about the same | 756 mm |
| Bétheny 11 km | same station | 24.8°C about the same | 1.2°C about the same | 756 mm |
| Tinqueux 12 km | Chambrecy-Civc | 25.4°C 0.6°C warmer | 0.4°C 0.8°C colder | 734 mm |
Sillery weather by month
Average daily high and low, mean temperature and rain, 1991–2020, at the Mailly-Civc station; sunshine at Charleville-Mez.
| Month | High | Low | Mean | Rain | Sun (hours) |
|---|---|---|---|---|---|
| January | 5.8°C | 1.2°C | 3.5°C | 69 mm | 50 |
| February | 6.9°C | 1.2°C | 4.0°C | 56 mm | 69 |
| March | 11.2°C | 3.6°C | 7.4°C | 52 mm | 128 |
| April | 15.2°C | 6.1°C | 10.6°C | 46 mm | 177 |
| May | 19.0°C | 9.7°C | 14.3°C | 61 mm | 197 |
| June | 22.3°C | 12.5°C | 17.4°C | 65 mm | 203 |
| July | 24.8°C | 14.4°C | 19.6°C | 64 mm | 214 |
| August | 24.5°C | 14.1°C | 19.3°C | 63 mm | 199 |
| September | 20.2°C | 11.1°C | 15.6°C | 56 mm | 153 |
| October | 15.2°C | 8.4°C | 11.8°C | 69 mm | 97 |
| November | 9.5°C | 4.5°C | 7.0°C | 70 mm | 48 |
| December | 6.4°C | 2.0°C | 4.2°C | 86 mm | 41 |
| Year | 15.1°C | 7.4°C | 11.2°C | 756 mm | 1,576 |
Where Sillery’s numbers come from
Averages over 30 years, not a forecast.
- Temperature, rain and day counts: Météo-France’s fiche climatologique for Mailly-Civc, 4.9 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, Charleville-Mez, 75 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 Marne.
Météo-France fiches climatologiques · IGN RGE ALTI®. Licence Ouverte 2.0.
Questions about Sillery’s climate
How warm does Sillery get in summer?
July is the warmest month, with average highs of 24.8°C. About 43 days a year reach 25°C, fewer than 78% of mainland French towns, and about 9 reach 30°C.
How cold does Sillery get in winter?
January nights average 1.2°C. The air drops to 0°C or below on about 45 nights a year, and about 8 days a year stay below freezing all day.
How much rain does Sillery get?
About 756 mm a year, more than 50% of mainland French towns. December is the wettest month (86 mm) and April the driest (46 mm).
How sunny is it?
The nearest Météo-France station that records sunshine, Charleville-Mez (75 km away), averages 1,576 hours of sunshine a year.
Are these figures for Sillery itself?
No: they are the normals of the Météo-France station matched to Sillery, Mailly-Civc, 4.9 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 MAILLY-CIVC, edited 15/10/2026); altitude: IGN, RGE ALTI®. Licence Ouverte 2.0. Today’s forecast for Sillery →
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.