July in Marcollin runs hotter than in 86% of mainland French towns
The coldest hours of a January night bottom out at 1.2°C on average. It is a wet place: more rain falls here than on 71% of mainland French towns. Of all months, October brings the most rain and February the least. The heating season runs November to March: each of those months averages under 10°C.
Figures from Météo-France’s Saint-Sorlin-en-Va station, 13 km west.
A year in Marcollin at a glance
Each month’s typical high and low in °C, at the Saint-Sorlin-en-Va station.
What a year in Marcollin 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 13 km west of Marcollin. Every figure on this page is the station’s, not a measurement in Marcollin itself.
| Station (Météo-France number) | Saint-Sorlin-en-Va (26330001) |
| Distance from the town | 13 km west |
| Station altitude | 237 m |
| Town altitude (its center) | 317 m |
| Period | 1991–2020 |
| Nearest station of any kind | 8.7 km |
| Sunshine measured at | Grenoble-Saint-Geoirs, 19 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 Marcollin 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. 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 |
|---|---|---|---|---|
| Marcollin | Saint-Sorlin-en-Va | 28.6°C | 1.2°C | 855 mm |
| Beaurepaire 4.7 km | same station | 28.6°C about the same | 1.2°C about the same | 855 mm |
| Saint-Siméon-de-Bressieux 14 km | Grenoble-Saint-Geoirs | 27.1°C 1.5°C cooler | −0.7°C 1.9°C colder | 915 mm |
| Anneyron 16 km | same station | 28.6°C about the same | 1.2°C about the same | 855 mm |
| La Côte-Saint-André 16 km | Grenoble-Saint-Geoirs | 27.1°C 1.5°C cooler | −0.7°C 1.9°C colder | 915 mm |
| Saint-Étienne-de-Saint-Geoirs 20 km | Grenoble-Saint-Geoirs | 27.1°C 1.5°C cooler | −0.7°C 1.9°C colder | 915 mm |
| Saint-Rambert-d'Albon 21 km | Sablons | 30.2°C 1.6°C warmer | 0.7°C 0.5°C colder | 805 mm |
Marcollin 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 Marcollin’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, 13 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, 19 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 Marcollin’s climate
How warm does Marcollin 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 Marcollin 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 Marcollin 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 (19 km away), averages 2,108 hours of sunshine a year.
Are these figures for Marcollin itself?
No: they are the normals of the Météo-France station matched to Marcollin, Saint-Sorlin-en-Va, 13 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 Marcollin →
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.