Less rain falls on Coolus than on 89% of mainland French towns: 632 mm a year
July afternoons average 25.9°C. In January, nights here are colder than in 80% of mainland French towns. The rainiest month is December; the driest is April. Warm coats and heating bills mark the months from November to March, when means dip under 10°C.
Figures from Météo-France’s Fagnières-Inrae station, 3.8 km north-west.
A year in Coolus at a glance
Each month’s typical high and low in °C, at the Fagnières-Inrae station.
What a year in Coolus feels like
Typical highs and lows by season and by month, from Météo-France’s 1991–2020 normals at Fagnières-Inrae.
About 632 mm of rain a year
December is the wettest month and April the driest. About 15 days a year bring 10 mm or more. 19th wettest of 22 towns of 2,500+ in Marne.
Rain by month
Millimeters
Sunshine by month
Hours of sunshine at Saint-Dizier
A frosty town: 54 frosts and 54 days of 25°C a year
On about 54 nights a year the air drops to 0°C or below, and on about 6 days it stays below freezing all day. About 54 days a year reach 25°C, and 14 reach 30°C.
Day counts are Météo-France’s 1991–2020 normals at Fagnières-Inrae: 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 Fagnières-Inrae
Fagnières-Inrae is 3.8 km north-west of Coolus. Every figure on this page is the station’s, not a measurement in Coolus itself.
| Station (Météo-France number) | Fagnières-Inrae (51242001) |
| Distance from the town | 3.8 km north-west |
| Station altitude | 105 m |
| Town altitude (its center) | 84 m |
| Period | 1991–2020 |
| Sunshine measured at | Saint-Dizier, 52 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 Coolus 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 |
|---|---|---|---|---|
| Coolus | Fagnières-Inrae | 25.9°C | 0.5°C | 632 mm |
| Châlons-en-Champagne 3.4 km | same station | 25.9°C about the same | 0.5°C about the same | 632 mm |
| Saint-Memmie 3.8 km | same station | 25.9°C about the same | 0.5°C about the same | 632 mm |
| Fagnières 3.9 km | same station | 25.9°C about the same | 0.5°C about the same | 632 mm |
| Mourmelon-le-Grand 23 km | Bouzy-Civc | 25.5°C about the same | 1.1°C 0.6°C milder | 688 mm |
| Blancs-Coteaux 25 km | same station | 25.9°C about the same | 0.5°C about the same | 632 mm |
| Suippes 26 km | Sommepy | 25.3°C 0.6°C cooler | 0.5°C about the same | 771 mm |
Coolus weather by month
Average daily high and low, mean temperature and rain, 1991–2020, at the Fagnières-Inrae station; sunshine at Saint-Dizier.
| Month | High | Low | Mean | Rain | Sun (hours) |
|---|---|---|---|---|---|
| January | 6.2°C | 0.5°C | 3.4°C | 49 mm | 61 |
| February | 7.6°C | 0.6°C | 4.1°C | 44 mm | 81 |
| March | 12.0°C | 2.6°C | 7.3°C | 44 mm | 143 |
| April | 16.0°C | 4.8°C | 10.4°C | 43 mm | 183 |
| May | 19.7°C | 8.5°C | 14.1°C | 55 mm | 216 |
| June | 23.1°C | 11.3°C | 17.2°C | 57 mm | 228 |
| July | 25.9°C | 13.4°C | 19.6°C | 56 mm | 235 |
| August | 25.6°C | 13.2°C | 19.4°C | 57 mm | 224 |
| September | 21.2°C | 10.1°C | 15.7°C | 49 mm | 173 |
| October | 16.0°C | 7.5°C | 11.7°C | 60 mm | 116 |
| November | 10.0°C | 3.8°C | 6.9°C | 55 mm | 63 |
| December | 6.7°C | 1.4°C | 4.1°C | 63 mm | 53 |
| Year | 15.8°C | 6.5°C | 11.2°C | 632 mm | 1,776 |
Where Coolus’s numbers come from
Averages over 30 years, not a forecast.
- Temperature, rain and day counts: Météo-France’s fiche climatologique for Fagnières-Inrae, 3.8 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, Saint-Dizier, 52 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 Coolus’s climate
How warm does Coolus get in summer?
July is the warmest month, with average highs of 25.9°C. About 54 days a year reach 25°C, fewer than 64% of mainland French towns, and about 14 reach 30°C.
How cold does Coolus get in winter?
January nights average 0.5°C. The air drops to 0°C or below on about 54 nights a year, and about 6 days a year stay below freezing all day.
How much rain does Coolus get?
About 632 mm a year, less than 89% of mainland French towns. December is the wettest month (63 mm) and April the driest (43 mm).
How sunny is it?
The nearest Météo-France station that records sunshine, Saint-Dizier (52 km away), averages 1,776 hours of sunshine a year.
Are these figures for Coolus itself?
No: they are the normals of the Météo-France station matched to Coolus, Fagnières-Inrae, 3.8 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 FAGNIERES-INRAE, edited 15/10/2026); altitude: IGN, RGE ALTI®. Licence Ouverte 2.0. Today’s forecast for Coolus →
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.