Ice on the ground: Trélou-sur-Marne sees more frosts than 91% of mainland French towns
High summer brings afternoon highs near 25.4°C. Expect the heaviest rain in December and the lightest in April. Its July afternoons stay fresher than in 66% of mainland French towns. Keep the boiler serviced for the months from November to April, which average under 10°C.
These are the figures of Météo-France’s Chambrecy-Civc station, 20 km north-east.
A year in Trélou-sur-Marne at a glance
Each month’s typical high and low in °C, at the Chambrecy-Civc station.
What a year in Trélou-sur-Marne feels like
Typical highs and lows by season and by month, from Météo-France’s 1991–2020 normals at Chambrecy-Civc.
About 734 mm of rain a year
December is the wettest month and April the driest. About 20 days a year bring 10 mm or more. 9th wettest of 24 towns of 2,500+ in Aisne.
Rain by month
Millimeters
A frosty town: 70 frosts and 52 days of 25°C a year
On about 70 nights a year the air drops to 0°C or below, and on about 5 days it stays below freezing all day. About 52 days a year reach 25°C, and 13 reach 30°C.
Day counts are Météo-France’s 1991–2020 normals at Chambrecy-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 Chambrecy-Civc
Chambrecy-Civc is 20 km north-east of Trélou-sur-Marne. Every figure on this page is the station’s, not a measurement in Trélou-sur-Marne itself.
| Station (Météo-France number) | Chambrecy-Civc (51111001) |
| Distance from the town | 20 km north-east |
| Station altitude | 150 m |
| Town altitude (its center) | 77 m |
| Period | 1991–2020 |
| Nearest station of any kind | 13 km |
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 Trélou-sur-Marne 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 Aisne.
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 |
|---|---|---|---|---|
| Trélou-sur-Marne | Chambrecy-Civc | 25.4°C | 0.4°C | 734 mm |
| Dormans 2.5 km | same station | 25.4°C about the same | 0.4°C about the same | 734 mm |
| Fère-en-Tardenois 15 km | Braine | 25.4°C about the same | 1.4°C 1°C milder | 663 mm |
| Château-Thierry 16 km | Blesmes | 24.4°C 1°C cooler | 0.8°C about the same | 713 mm |
| Essômes-sur-Marne 19 km | Saint-Cyr/Morin-Bg | 25.5°C about the same | 1.0°C 0.6°C milder | 815 mm |
| Montmirail 23 km | Esternay | 25.4°C about the same | 0.9°C 0.5°C milder | 701 mm |
| Épernay 26 km | Bouzy-Civc | 25.5°C about the same | 1.1°C 0.7°C milder | 688 mm |
Trélou-sur-Marne weather by month
Average daily high and low, mean temperature and rain, 1991–2020, at the Chambrecy-Civc station.
| Month | High | Low | Mean | Rain |
|---|---|---|---|---|
| January | 6.4°C | 0.4°C | 3.4°C | 67 mm |
| February | 7.7°C | 0.2°C | 4.0°C | 55 mm |
| March | 12.2°C | 1.8°C | 7.0°C | 54 mm |
| April | 16.2°C | 3.4°C | 9.8°C | 48 mm |
| May | 19.8°C | 7.0°C | 13.4°C | 61 mm |
| June | 23.1°C | 10.0°C | 16.6°C | 58 mm |
| July | 25.4°C | 12.0°C | 18.7°C | 68 mm |
| August | 25.2°C | 11.9°C | 18.5°C | 64 mm |
| September | 21.1°C | 9.1°C | 15.1°C | 53 mm |
| October | 16.0°C | 7.0°C | 11.5°C | 61 mm |
| November | 10.2°C | 3.5°C | 6.9°C | 63 mm |
| December | 6.9°C | 1.2°C | 4.0°C | 81 mm |
| Year | 15.8°C | 5.6°C | 10.7°C | 734 mm |
Where Trélou-sur-Marne’s numbers come from
Averages over 30 years, not a forecast.
- Temperature, rain and day counts: Météo-France’s fiche climatologique for Chambrecy-Civc, 20 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.
- Comparisons: every town of 2,500 or more in mainland France, read the same way; the dots are the towns of 2,500+ in Aisne.
Météo-France fiches climatologiques · IGN RGE ALTI®. Licence Ouverte 2.0.
Questions about Trélou-sur-Marne’s climate
How warm does Trélou-sur-Marne get in summer?
July is the warmest month, with average highs of 25.4°C. About 52 days a year reach 25°C, fewer than 65% of mainland French towns, and about 13 reach 30°C.
How cold does Trélou-sur-Marne get in winter?
February nights average 0.2°C. The air drops to 0°C or below on about 70 nights a year, and about 5 days a year stay below freezing all day.
How much rain does Trélou-sur-Marne get?
About 734 mm a year, less than 58% of mainland French towns. December is the wettest month (81 mm) and April the driest (48 mm).
Are these figures for Trélou-sur-Marne itself?
No: they are the normals of the Météo-France station matched to Trélou-sur-Marne, Chambrecy-Civc, 20 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 CHAMBRECY-CIVC, edited 15/10/2026); altitude: IGN, RGE ALTI®. Licence Ouverte 2.0. Today’s forecast for Trélou-sur-Marne →
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.