Monnes gets more frosts than 90% of mainland French towns
January nights average 0.9°C, July afternoons 25.9°C, and a year brings 727 mm of rain. Rain is light here, less than falls on 61% of mainland French towns. Figures from Météo-France’s Ussy-sur-Marne station, 21 km south-west.
A year in Monnes at a glance
Each month’s typical high and low in °C, at the Ussy-sur-Marne station.
What a year in Monnes feels like
Typical highs and lows by season and by month, from Météo-France’s 1991–2020 normals at Ussy-sur-Marne.
About 727 mm of rain a year
December is the wettest month and April the driest. About 19 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: 68 frosts and 61 days of 25°C a year
On about 68 nights a year the air drops to 0°C or below, and on about 4 days it stays below freezing all day. About 61 days a year reach 25°C, and 17 reach 30°C.
Day counts are Météo-France’s 1991–2020 normals at Ussy-sur-Marne: 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 Ussy-sur-Marne
Ussy-sur-Marne is 21 km south-west of Monnes. Every figure on this page is the station’s, not a measurement in Monnes itself.
| Station (Météo-France number) | Ussy-sur-Marne (77478001) |
| Distance from the town | 21 km south-west |
| Station altitude | 69 m |
| Town altitude (its center) | 129 m |
| Period | 1991–2020 |
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 Monnes 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 |
|---|---|---|---|---|
| Monnes | Ussy-sur-Marne | 25.9°C | 0.9°C | 727 mm |
| Villers-Cotterêts 15 km | Margny-lès-Compiègne | 24.7°C 1.2°C cooler | 1.5°C 0.6°C milder | 634 mm |
| Essômes-sur-Marne 17 km | Saint-Cyr/Morin-Bg | 25.5°C about the same | 1.0°C about the same | 815 mm |
| Château-Thierry 17 km | Blesmes | 24.4°C 1.5°C cooler | 0.8°C about the same | 713 mm |
| Charly-sur-Marne 20 km | Saint-Cyr/Morin-Bg | 25.5°C about the same | 1.0°C about the same | 815 mm |
| Lizy-sur-Ourcq 20 km | same station | 25.9°C about the same | 0.9°C about the same | 727 mm |
| Fère-en-Tardenois 22 km | Braine | 25.4°C 0.5°C cooler | 1.4°C about the same | 663 mm |
Monnes weather by month
Average daily high and low, mean temperature and rain, 1991–2020, at the Ussy-sur-Marne station.
| Month | High | Low | Mean | Rain |
|---|---|---|---|---|
| January | 7.1°C | 0.9°C | 4.0°C | 62 mm |
| February | 8.4°C | 0.7°C | 4.5°C | 54 mm |
| March | 12.7°C | 2.4°C | 7.6°C | 50 mm |
| April | 16.5°C | 4.0°C | 10.3°C | 48 mm |
| May | 20.1°C | 7.7°C | 13.9°C | 67 mm |
| June | 23.3°C | 10.6°C | 17.0°C | 59 mm |
| July | 25.9°C | 12.6°C | 19.2°C | 66 mm |
| August | 25.8°C | 12.2°C | 19.0°C | 62 mm |
| September | 21.8°C | 9.3°C | 15.6°C | 52 mm |
| October | 16.7°C | 7.3°C | 12.0°C | 63 mm |
| November | 10.9°C | 3.9°C | 7.4°C | 63 mm |
| December | 7.6°C | 1.5°C | 4.6°C | 80 mm |
| Year | 16.4°C | 6.1°C | 11.3°C | 727 mm |
Where Monnes’s numbers come from
Averages over 30 years, not a forecast.
- Temperature, rain and day counts: Météo-France’s fiche climatologique for Ussy-sur-Marne, 21 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 Monnes’s climate
How warm does Monnes get in summer?
July is the warmest month, with average highs of 25.9°C. About 61 days a year reach 25°C, more than 51% of mainland French towns, and about 17 reach 30°C.
How cold does Monnes get in winter?
February nights average 0.7°C. The air drops to 0°C or below on about 68 nights a year, and about 4 days a year stay below freezing all day.
How much rain does Monnes get?
About 727 mm a year, less than 61% of mainland French towns. December is the wettest month (80 mm) and April the driest (48 mm).
Are these figures for Monnes itself?
No: they are the normals of the Météo-France station matched to Monnes, Ussy-sur-Marne, 21 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 USSY-SUR-MARNE, edited 15/10/2026); altitude: IGN, RGE ALTI®. Licence Ouverte 2.0. Today’s forecast for Monnes →
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.