The climate in Mortery sits close to the middle of mainland French towns
About 741 mm of rain falls in a typical year; July afternoons reach 25.6°C and January nights drop to 1.2°C. Of all months, December brings the most rain and April the least. Its January nights bite harder than in 70% of mainland French towns. Frost greets about 47 mornings a year, so leave time to clear the car.
Figures from Météo-France’s Voulton station, 7 km east.
A year in Mortery at a glance
Each month’s typical high and low in °C, at the Voulton station.
What a year in Mortery feels like
Typical highs and lows by season and by month, from Météo-France’s 1991–2020 normals at Voulton.
About 741 mm of rain a year
December is the wettest month and April the driest. About 21 days a year bring 10 mm or more. The wettest of 116 towns of 2,500+ in Seine-et-Marne.
Rain by month
Millimeters
Sunshine by month
Hours of sunshine at Melun
47 frosts and 51 days of 25°C a year
On about 47 nights a year the air drops to 0°C or below, and on about 7 days it stays below freezing all day. About 51 days a year reach 25°C, and 13 reach 30°C.
Day counts are Météo-France’s 1991–2020 normals at Voulton: 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 Voulton
Voulton is 7 km east of Mortery. Every figure on this page is the station’s, not a measurement in Mortery itself.
| Station (Météo-France number) | Voulton (77530001) |
| Distance from the town | 7 km east |
| Station altitude | 175 m |
| Town altitude (its center) | 145 m |
| Period | 1991–2020 |
| Sunshine measured at | Melun, 43 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 Mortery 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 Seine-et-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 |
|---|---|---|---|---|
| Mortery | Voulton | 25.6°C | 1.2°C | 741 mm |
| Provins 5.4 km | same station | 25.6°C about the same | 1.2°C about the same | 741 mm |
| Donnemarie-Dontilly 16 km | La Brosse-Mx | 26.4°C 0.8°C warmer | 2.0°C 0.8°C milder | 653 mm |
| Nangis 18 km | Nangis | 25.3°C about the same | 1.3°C about the same | 704 mm |
| La Ferté-Gaucher 21 km | Chevru | 25.3°C about the same | 1.3°C about the same | 698 mm |
| Nogent-sur-Seine 22 km | Bouy-sur-Orvin | 26.3°C 0.7°C warmer | 1.3°C about the same | 636 mm |
| Villenauxe-la-Grande 22 km | Romilly | 26.2°C 0.6°C warmer | 0.8°C about the same | 620 mm |
Mortery weather by month
Average daily high and low, mean temperature and rain, 1991–2020, at the Voulton station; sunshine at Melun.
| Month | High | Low | Mean | Rain | Sun (hours) |
|---|---|---|---|---|---|
| January | 6.0°C | 1.2°C | 3.6°C | 64 mm | 60 |
| February | 7.4°C | 1.3°C | 4.3°C | 57 mm | 83 |
| March | 11.7°C | 3.3°C | 7.5°C | 56 mm | 143 |
| April | 15.6°C | 5.4°C | 10.5°C | 52 mm | 188 |
| May | 19.2°C | 8.7°C | 14.0°C | 65 mm | 216 |
| June | 22.8°C | 11.7°C | 17.2°C | 57 mm | 226 |
| July | 25.6°C | 13.7°C | 19.6°C | 59 mm | 235 |
| August | 25.6°C | 13.6°C | 19.6°C | 55 mm | 225 |
| September | 21.2°C | 10.7°C | 16.0°C | 57 mm | 180 |
| October | 15.8°C | 8.1°C | 11.9°C | 70 mm | 119 |
| November | 9.9°C | 4.4°C | 7.1°C | 67 mm | 68 |
| December | 6.6°C | 2.0°C | 4.3°C | 83 mm | 54 |
| Year | 15.6°C | 7.0°C | 11.3°C | 741 mm | 1,798 |
Where Mortery’s numbers come from
Averages over 30 years, not a forecast.
- Temperature, rain and day counts: Météo-France’s fiche climatologique for Voulton, 7 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, Melun, 43 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 Seine-et-Marne.
Météo-France fiches climatologiques · IGN RGE ALTI®. Licence Ouverte 2.0.
Questions about Mortery’s climate
How warm does Mortery get in summer?
July is the warmest month, with average highs of 25.6°C. About 51 days a year reach 25°C, fewer than 68% of mainland French towns, and about 13 reach 30°C.
How cold does Mortery get in winter?
January nights average 1.2°C. The air drops to 0°C or below on about 47 nights a year, and about 7 days a year stay below freezing all day.
How much rain does Mortery get?
About 741 mm a year, less than 54% of mainland French towns. December is the wettest month (83 mm) and April the driest (52 mm).
How sunny is it?
The nearest Météo-France station that records sunshine, Melun (43 km away), averages 1,798 hours of sunshine a year.
Are these figures for Mortery itself?
No: they are the normals of the Météo-France station matched to Mortery, Voulton, 7 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 VOULTON_SAPC, edited 15/10/2026); altitude: IGN, RGE ALTI®. Licence Ouverte 2.0. Today’s forecast for Mortery →
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.