July in Monsteroux-Milieu runs hotter than in 86% of mainland French towns
The coldest hours of a January night bottom out at 1.2°C on average. Its yearly rainfall tops that of 71% of mainland French towns. Of all months, October brings the most rain and February the least. Radiators earn their keep from November to March, the months that average under 10°C.
These are the figures of Météo-France’s Saint-Sorlin-en-Va station, 18 km south.
A year in Monsteroux-Milieu at a glance
Each month’s typical high and low in °C, at the Saint-Sorlin-en-Va station.
What a year in Monsteroux-Milieu feels like
Typical highs and lows by season and by month, from Météo-France’s 1991–2020 normals at Saint-Sorlin-en-Va.
About 855 mm of rain a year
October is the wettest month and February the driest. About 26 days a year bring 10 mm or more. 99th wettest of 110 towns of 2,500+ in Isère.
Rain by month
Millimeters
Sunshine by month
Hours of sunshine at Grenoble-Saint-Geoirs
43 frosts and 90 days of 25°C a year
On about 43 nights a year the air drops to 0°C or below, and on about 5 days it stays below freezing all day. About 90 days a year reach 25°C, and 34 reach 30°C.
Day counts are Météo-France’s 1991–2020 normals at Saint-Sorlin-en-Va: 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 Saint-Sorlin-en-Va
Saint-Sorlin-en-Va is 18 km south of Monsteroux-Milieu. Every figure on this page is the station’s, not a measurement in Monsteroux-Milieu itself.
| Station (Météo-France number) | Saint-Sorlin-en-Va (26330001) |
| Distance from the town | 18 km south |
| Station altitude | 237 m |
| Town altitude (its center) | 287 m |
| Period | 1991–2020 |
| Nearest station of any kind | 11 km |
| Sunshine measured at | Grenoble-Saint-Geoirs, 30 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 Monsteroux-Milieu 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 Isère.
Nearby towns’ climate
The nearest towns of 2,500+ within 29 km, each with its own matched station.
| Town | Station | July high | January low | Rain a year |
|---|---|---|---|---|
| Monsteroux-Milieu | Saint-Sorlin-en-Va | 28.6°C | 1.2°C | 855 mm |
| Estrablin 8.7 km | Lyon-Bron | 28.2°C about the same | 1.1°C about the same | 821 mm |
| Pont-Évêque 11 km | Lyon-Bron | 28.2°C about the same | 1.1°C about the same | 821 mm |
| Vienne 11 km | Lyon-Bron | 28.2°C about the same | 1.1°C about the same | 821 mm |
| Ampuis 12 km | Sablons | 30.2°C 1.6°C warmer | 0.7°C 0.5°C colder | 805 mm |
| Roussillon 12 km | Sablons | 30.2°C 1.6°C warmer | 0.7°C 0.5°C colder | 805 mm |
| Saint-Clair-du-Rhône 13 km | Sablons | 30.2°C 1.6°C warmer | 0.7°C 0.5°C colder | 805 mm |
Monsteroux-Milieu weather by month
Average daily high and low, mean temperature and rain, 1991–2020, at the Saint-Sorlin-en-Va station; sunshine at Grenoble-Saint-Geoirs.
| Month | High | Low | Mean | Rain | Sun (hours) |
|---|---|---|---|---|---|
| January | 7.4°C | 1.2°C | 4.3°C | 56 mm | 91 |
| February | 9.2°C | 1.4°C | 5.3°C | 41 mm | 112 |
| March | 14.1°C | 4.2°C | 9.2°C | 49 mm | 173 |
| April | 17.8°C | 7.0°C | 12.4°C | 69 mm | 190 |
| May | 21.9°C | 10.8°C | 16.3°C | 80 mm | 221 |
| June | 26.1°C | 14.2°C | 20.1°C | 66 mm | 258 |
| July | 28.6°C | 15.9°C | 22.2°C | 63 mm | 292 |
| August | 28.4°C | 15.5°C | 21.9°C | 60 mm | 263 |
| September | 23.5°C | 12.1°C | 17.8°C | 92 mm | 199 |
| October | 18.1°C | 9.3°C | 13.7°C | 115 mm | 140 |
| November | 11.7°C | 4.8°C | 8.2°C | 108 mm | 91 |
| December | 7.8°C | 1.9°C | 4.9°C | 56 mm | 78 |
| Year | 17.9°C | 8.2°C | 13.0°C | 855 mm | 2,108 |
Where Monsteroux-Milieu’s numbers come from
Averages over 30 years, not a forecast.
- Temperature, rain and day counts: Météo-France’s fiche climatologique for Saint-Sorlin-en-Va, 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.
- Sunshine: the nearest station with at least 10 years of sunshine records, Grenoble-Saint-Geoirs, 30 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 Isère.
Météo-France fiches climatologiques · IGN RGE ALTI®. Licence Ouverte 2.0.
Questions about Monsteroux-Milieu’s climate
How warm does Monsteroux-Milieu get in summer?
July is the warmest month, with average highs of 28.6°C. About 90 days a year reach 25°C, more than 82% of mainland French towns, and about 34 reach 30°C.
How cold does Monsteroux-Milieu get in winter?
January nights average 1.2°C. The air drops to 0°C or below on about 43 nights a year, and about 5 days a year stay below freezing all day.
How much rain does Monsteroux-Milieu get?
About 855 mm a year, more than 71% of mainland French towns. October is the wettest month (115 mm) and February the driest (41 mm).
How sunny is it?
The nearest Météo-France station that records sunshine, Grenoble-Saint-Geoirs (30 km away), averages 2,108 hours of sunshine a year.
Are these figures for Monsteroux-Milieu itself?
No: they are the normals of the Météo-France station matched to Monsteroux-Milieu, Saint-Sorlin-en-Va, 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 ST-SORLIN-EN-VA, edited 15/10/2026); altitude: IGN, RGE ALTI®. Licence Ouverte 2.0. Today’s forecast for Monsteroux-Milieu →
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.