Monnetier-Mornex is among the wettest of mainland French towns: 1,170 mm of rain a year
Midwinter brings lows of about −1.0°C. Only 27°C separates winter nights from summer afternoons. Winter nights are cold: in January they are colder than in 94% of mainland French towns. Frost greets about 72 mornings a year, so leave time to clear the car.
These are the figures of Météo-France’s Archamps station, 7.1 km south-west.
A year in Monnetier-Mornex at a glance
Each month’s typical high and low in °C, at the Archamps station.
What a year in Monnetier-Mornex feels like
Typical highs and lows by season and by month, from Météo-France’s 1991–2020 normals at Archamps.
About 1,170 mm of rain a year
December is the wettest month and February the driest. About 41 days a year bring 10 mm or more. 38th wettest of 69 towns of 2,500+ in Haute-Savoie.
Rain by month
Millimeters
Sunshine by month
Hours of sunshine at Meythet
A frosty town: 72 frosts and 62 days of 25°C a year
On about 72 nights a year the air drops to 0°C or below, and on about 15 days it stays below freezing all day. About 62 days a year reach 25°C, and 17 reach 30°C.
Day counts are Météo-France’s 1991–2020 normals at Archamps: 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 Archamps
Archamps is 7.1 km south-west of Monnetier-Mornex. Every figure on this page is the station’s, not a measurement in Monnetier-Mornex itself.
| Station (Météo-France number) | Archamps (74016001) |
| Distance from the town | 7.1 km south-west |
| Station altitude | 560 m |
| Town altitude (its center) | 601 m |
| Period | 1993–2020 (the station’s own record) |
| Nearest station of any kind | 2.3 km |
| Sunshine measured at | Meythet, 27 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 Monnetier-Mornex 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 Haute-Savoie.
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 |
|---|---|---|---|---|
| Monnetier-Mornex | Archamps | 26.4°C | −1.0°C | 1,170 mm |
| Étrembières 2 km | Gaillard | 27.6°C 1.2°C warmer | −1.1°C about the same | 967 mm |
| Gaillard 3.6 km | Gaillard | 27.6°C 1.2°C warmer | −1.1°C about the same | 967 mm |
| Vétraz-Monthoux 3.8 km | same station | 26.4°C about the same | −1.0°C about the same | 1,170 mm |
| Annemasse 3.9 km | Gaillard | 27.6°C 1.2°C warmer | −1.1°C about the same | 967 mm |
| Reignier-Ésery 4.1 km | Gaillard | 27.6°C 1.2°C warmer | −1.1°C about the same | 967 mm |
| Ambilly 4.2 km | Gaillard | 27.6°C 1.2°C warmer | −1.1°C about the same | 967 mm |
Monnetier-Mornex weather by month
Average daily high and low, mean temperature and rain, 1991–2020, at the Archamps station; sunshine at Meythet.
| Month | High | Low | Mean | Rain | Sun (hours) |
|---|---|---|---|---|---|
| January | 4.2°C | −1.0°C | 1.6°C | 97 mm | 88 |
| February | 6.4°C | −0.6°C | 2.9°C | 79 mm | 113 |
| March | 11.2°C | 2.0°C | 6.6°C | 83 mm | 174 |
| April | 15.4°C | 4.7°C | 10.0°C | 94 mm | 191 |
| May | 19.9°C | 8.5°C | 14.2°C | 99 mm | 220 |
| June | 24.2°C | 12.1°C | 18.2°C | 97 mm | 256 |
| July | 26.4°C | 14.0°C | 20.2°C | 88 mm | 274 |
| August | 25.5°C | 13.8°C | 19.7°C | 100 mm | 249 |
| September | 20.4°C | 10.3°C | 15.4°C | 106 mm | 195 |
| October | 14.9°C | 7.1°C | 11.0°C | 112 mm | 141 |
| November | 8.3°C | 2.6°C | 5.5°C | 104 mm | 91 |
| December | 5.0°C | −0.2°C | 2.4°C | 113 mm | 78 |
| Year | 15.2°C | 6.1°C | 10.6°C | 1,170 mm | 2,069 |
Where Monnetier-Mornex’s numbers come from
Averages over 30 years, not a forecast.
- Temperature, rain and day counts: Météo-France’s fiche climatologique for Archamps, 7.1 km away: statistics for 1991–2020 (the station’s own years, 1993–2020, where its record is shorter).
- 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, Meythet, 27 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 Haute-Savoie.
Météo-France fiches climatologiques · IGN RGE ALTI®. Licence Ouverte 2.0.
Questions about Monnetier-Mornex’s climate
How warm does Monnetier-Mornex get in summer?
July is the warmest month, with average highs of 26.4°C. About 62 days a year reach 25°C, more than 51% of mainland French towns, and about 17 reach 30°C.
How cold does Monnetier-Mornex get in winter?
January nights average −1.0°C. The air drops to 0°C or below on about 72 nights a year, and about 15 days a year stay below freezing all day.
How much rain does Monnetier-Mornex get?
About 1,170 mm a year, more than 95% of mainland French towns. December is the wettest month (113 mm) and February the driest (79 mm).
How sunny is it?
The nearest Météo-France station that records sunshine, Meythet (27 km away), averages 2,069 hours of sunshine a year.
Are these figures for Monnetier-Mornex itself?
No: they are the normals of the Météo-France station matched to Monnetier-Mornex, Archamps, 7.1 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 ARCHAMPS, edited 15/10/2026); altitude: IGN, RGE ALTI®. Licence Ouverte 2.0. Today’s forecast for Monnetier-Mornex →
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.