Hardly any mainland French towns see harsher January nights than Ponsonnas
On a normal July day the thermometer tops out near 25.0°C. Rain is plentiful here, more than falls on 89% of mainland French towns. Expect the heaviest rain in November and the lightest in July. Picnics, hikes and garden evenings come into their own from June to September, with highs of 20–25°C.
These are the figures of Météo-France’s Monestier station, 13 km west.
A year in Ponsonnas at a glance
Each month’s typical high and low in °C, at the Monestier station.
What a year in Ponsonnas feels like
Typical highs and lows by season and by month, from Météo-France’s 1991–2020 normals at Monestier.
About 1,063 mm of rain a year
November is the wettest month and July the driest. About 36 days a year bring 10 mm or more. 43rd wettest of 110 towns of 2,500+ in Isère.
Rain by month
Millimeters
Sunshine by month
Hours of sunshine at Grenoble-Saint-Geoirs
A frosty town: 93 frosts and 50 days of 25°C a year
On about 93 nights a year the air drops to 0°C or below, and on about 17 days it stays below freezing all day. About 50 days a year reach 25°C, and 11 reach 30°C.
Day counts are Météo-France’s 1991–2020 normals at Monestier: 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 Monestier
Monestier is 13 km west of Ponsonnas. Every figure on this page is the station’s, not a measurement in Ponsonnas itself.
| Station (Météo-France number) | Monestier (38242001) |
| Distance from the town | 13 km west |
| Station altitude | 806 m |
| Town altitude (its center) | 828 m |
| Period | 1991–2020 |
| Nearest station of any kind | 5 km |
| Sunshine measured at | Grenoble-Saint-Geoirs, 65 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 Ponsonnas 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 |
|---|---|---|---|---|
| Ponsonnas | Monestier | 25.0°C | −2.1°C | 1,063 mm |
| La Mure 1.7 km | same station | 25.0°C about the same | −2.1°C about the same | 1,063 mm |
| Saint-Georges-de-Commiers 18 km | Saint-Jean-en-Roya | 28.5°C 3.5°C warmer | −0.1°C 2°C milder | 1,136 mm |
| Vif 20 km | Saint-Jean-en-Roya | 28.5°C 3.5°C warmer | −0.1°C 2°C milder | 1,136 mm |
| Vizille 21 km | Chatte | 28.3°C 3.3°C warmer | −0.5°C 1.6°C milder | 968 mm |
| Champ-sur-Drac 21 km | Chatte | 28.3°C 3.3°C warmer | −0.5°C 1.6°C milder | 968 mm |
| Jarrie 24 km | Saint-Jean-en-Roya | 28.5°C 3.5°C warmer | −0.1°C 2°C milder | 1,136 mm |
Ponsonnas weather by month
Average daily high and low, mean temperature and rain, 1991–2020, at the Monestier station; sunshine at Grenoble-Saint-Geoirs.
| Month | High | Low | Mean | Rain | Sun (hours) |
|---|---|---|---|---|---|
| January | 4.9°C | −2.1°C | 1.4°C | 95 mm | 91 |
| February | 6.3°C | −2.0°C | 2.2°C | 71 mm | 112 |
| March | 10.8°C | 0.9°C | 5.9°C | 80 mm | 173 |
| April | 14.1°C | 3.6°C | 8.9°C | 85 mm | 190 |
| May | 18.4°C | 7.4°C | 12.9°C | 94 mm | 221 |
| June | 22.4°C | 10.9°C | 16.7°C | 75 mm | 258 |
| July | 25.0°C | 12.7°C | 18.9°C | 67 mm | 292 |
| August | 24.6°C | 12.8°C | 18.7°C | 80 mm | 263 |
| September | 19.8°C | 9.6°C | 14.7°C | 93 mm | 199 |
| October | 15.2°C | 6.5°C | 10.8°C | 103 mm | 140 |
| November | 9.0°C | 1.8°C | 5.4°C | 119 mm | 91 |
| December | 5.3°C | −1.1°C | 2.1°C | 102 mm | 78 |
| Year | 14.7°C | 5.1°C | 9.9°C | 1,063 mm | 2,108 |
Where Ponsonnas’s numbers come from
Averages over 30 years, not a forecast.
- Temperature, rain and day counts: Météo-France’s fiche climatologique for Monestier, 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, 65 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 Ponsonnas’s climate
How warm does Ponsonnas get in summer?
July is the warmest month, with average highs of 25.0°C. About 50 days a year reach 25°C, fewer than 68% of mainland French towns, and about 11 reach 30°C.
How cold does Ponsonnas get in winter?
January nights average −2.1°C. The air drops to 0°C or below on about 93 nights a year, and about 17 days a year stay below freezing all day.
How much rain does Ponsonnas get?
About 1,063 mm a year, more than 89% of mainland French towns. November is the wettest month (119 mm) and July the driest (67 mm).
How sunny is it?
The nearest Météo-France station that records sunshine, Grenoble-Saint-Geoirs (65 km away), averages 2,108 hours of sunshine a year.
Are these figures for Ponsonnas itself?
No: they are the normals of the Météo-France station matched to Ponsonnas, Monestier, 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 MONESTIER, edited 15/10/2026); altitude: IGN, RGE ALTI®. Licence Ouverte 2.0. Today’s forecast for Ponsonnas →
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.