Ice on the ground: Acy-en-Multien sees more frosts than 90% of mainland French towns
July afternoons average 25.9°C. Of all months, December brings the most rain and April the least. None of the 59 towns of 2,500+ in Oise gets more rain. Wet days, with 1 mm of rain or more, come about 119 times a year.
These are the figures of Météo-France’s Ussy-sur-Marne station, 18 km south-east.
A year in Acy-en-Multien at a glance
Each month’s typical high and low in °C, at the Ussy-sur-Marne station.
What a year in Acy-en-Multien 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. The wettest of 59 towns of 2,500+ in Oise.
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 18 km south-east of Acy-en-Multien. Every figure on this page is the station’s, not a measurement in Acy-en-Multien itself.
| Station (Météo-France number) | Ussy-sur-Marne (77478001) |
| Distance from the town | 18 km south-east |
| Station altitude | 69 m |
| Town altitude (its center) | 91 m |
| Period | 1991–2020 |
| Nearest station of any kind | 16 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 Acy-en-Multien 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 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 |
|---|---|---|---|---|
| Acy-en-Multien | Ussy-sur-Marne | 25.9°C | 0.9°C | 727 mm |
| Lizy-sur-Ourcq 9.8 km | same station | 25.9°C about the same | 0.9°C about the same | 727 mm |
| Nanteuil-le-Haudouin 11 km | Roissy | 25.1°C 0.8°C cooler | 2.3°C 1.4°C milder | 694 mm |
| Saint-Pathus 12 km | Roissy | 25.1°C 0.8°C cooler | 2.3°C 1.4°C milder | 694 mm |
| Saint-Soupplets 13 km | Roissy | 25.1°C 0.8°C cooler | 2.3°C 1.4°C milder | 694 mm |
| Le Plessis-Belleville 14 km | Roissy | 25.1°C 0.8°C cooler | 2.3°C 1.4°C milder | 694 mm |
| Crépy-en-Valois 15 km | Margny-lès-Compiègne | 24.7°C 1.2°C cooler | 1.5°C 0.6°C milder | 634 mm |
Acy-en-Multien 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 Acy-en-Multien’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, 18 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 Oise.
Météo-France fiches climatologiques · IGN RGE ALTI®. Licence Ouverte 2.0.
Questions about Acy-en-Multien’s climate
How warm does Acy-en-Multien 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 Acy-en-Multien 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 Acy-en-Multien 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 Acy-en-Multien itself?
No: they are the normals of the Météo-France station matched to Acy-en-Multien, Ussy-sur-Marne, 18 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 Acy-en-Multien →
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.