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Grenoble, Rhône-Alpes Weather by Month and Climate Averages
Monthly normals · Rain · Snow
Sunshine · Freeze dates · Records · Best time to visit
What is the weather like in Grenoble, Rhône-Alpes?
Grenoble, Rhône-Alpes gets 823 mm of precipitation a year over about 141 rainy days. July is the warmest month (average high 28°C) and January the coldest (average low 1°C).
Humid subtropical climate
Grenoble, Rhône-Alpes has warm summers and chilly winters. Daytime highs range from about 7°C in January to 28°C in July. October is usually the wettest month. The most comfortable time to visit is typically April to June and September, when daytime highs sit near 22°C.
| Season | Months | Avg low | Avg high |
|---|---|---|---|
| Winter | Dec–Feb | 1° | 8° |
| Spring | Mar–May | 7° | 18° |
| Summer | Jun–Aug | 16° | 27° |
| Autumn | Sep–Nov | 8° | 17° |
How much rain does Grenoble get?
Grenoble gets 823 mm of precipitation in an average year, spread over about 141 days with measurable rain. That is fewer rainy days than 71% of France.
October is the wettest month, with 93 mm. February is the driest, with 46 mm. October has the most rainy days, about 14.
The longest dry spell in the last five years lasted 21 days, to January 31, 2022.
Grenoble weather by month
Grenoble weather in January
In January, Grenoble averages a high of 7°C and a low of 1°C. It gets 54 mm of precipitation over about 13 rainy days. Estimated sunshine is 36% of daylight hours, derived from ERA5 cloud cover. The January record high is 21°C (2015) and the record low is -18°C (1985).
Grenoble weather in February
In February, Grenoble averages a high of 9°C and a low of 1°C. It gets 46 mm of precipitation over about 11 rainy days. Estimated sunshine is 42% of daylight hours, derived from ERA5 cloud cover. The February record high is 22°C (1990) and the record low is -12°C (2012).
Grenoble weather in March
In March, Grenoble averages a high of 14°C and a low of 4°C. It gets 52 mm of precipitation over about 12 rainy days. Estimated sunshine is 40% of daylight hours, derived from ERA5 cloud cover. The March record high is 26°C (1990) and the record low is -9°C (2005).
Grenoble weather in April
In April, Grenoble averages a high of 17°C and a low of 7°C. It gets 66 mm of precipitation over about 11 rainy days. Estimated sunshine is 42% of daylight hours, derived from ERA5 cloud cover. The April record high is 29°C (2024) and the record low is -3°C (2003). April is one of the most comfortable months to visit.
Grenoble weather in May
In May, Grenoble averages a high of 22°C and a low of 11°C. It gets 81 mm of precipitation over about 13 rainy days. Estimated sunshine is 35% of daylight hours, derived from ERA5 cloud cover. The May record high is 33°C (2009) and the record low is 0°C (1976). May is one of the most comfortable months to visit.
Grenoble weather in June
In June, Grenoble averages a high of 26°C and a low of 14°C. It gets 68 mm of precipitation over about 11 rainy days. Estimated sunshine is 40% of daylight hours, derived from ERA5 cloud cover. The June record high is 38°C (2003) and the record low is 4°C (1975). June is one of the most comfortable months to visit.
Grenoble weather in July
In July, Grenoble averages a high of 28°C and a low of 17°C. It gets 65 mm of precipitation over about 9 rainy days. Estimated sunshine is 57% of daylight hours, derived from ERA5 cloud cover. The July record high is 39°C (1983) and the record low is 7°C (1984).
Grenoble weather in August
In August, Grenoble averages a high of 28°C and a low of 16°C. It gets 67 mm of precipitation over about 9 rainy days. Estimated sunshine is 55% of daylight hours, derived from ERA5 cloud cover. The August record high is 40°C (2003) and the record low is 6°C (1987).
Grenoble weather in September
In September, Grenoble averages a high of 23°C and a low of 12°C. It gets 80 mm of precipitation over about 10 rainy days. Estimated sunshine is 43% of daylight hours, derived from ERA5 cloud cover. The September record high is 34°C (2023) and the record low is 2°C (1977). September is one of the most comfortable months to visit.
Grenoble weather in October
In October, Grenoble averages a high of 18°C and a low of 9°C. It gets 93 mm of precipitation over about 14 rainy days. Estimated sunshine is 36% of daylight hours, derived from ERA5 cloud cover. The October record high is 31°C (2023) and the record low is -4°C (1997).
Grenoble weather in November
In November, Grenoble averages a high of 12°C and a low of 4°C. It gets 89 mm of precipitation over about 14 rainy days. Estimated sunshine is 36% of daylight hours, derived from ERA5 cloud cover. The November record high is 22°C (1977) and the record low is -7°C (1998).
Grenoble weather in December
In December, Grenoble averages a high of 8°C and a low of 2°C. It gets 61 mm of precipitation over about 14 rainy days. Estimated sunshine is 34% of daylight hours, derived from ERA5 cloud cover. The December record high is 20°C (1977) and the record low is -11°C (2009).
Sunshine, humidity and wind in Grenoble
July is the sunniest month in Grenoble, with estimated sunshine of 57% of daylight hours from ERA5 cloud cover. December is the cloudiest, at 34%. The annual cloud-cover estimate is 41% of daylight hours; it is not a measurement of sunshine duration. Grenoble is sunnier than 78% of France.
Humidity peaks in November at 82% and is lowest in July at 66%.
Grenoble has about 11 days a year above 32°C. Grenoble is hotter than 83% of France.
First and last freeze in Grenoble
The first fall freeze in Grenoble typically comes around November 16, and the last spring freeze around March 31. That leaves a frost-free growing season of about 230 days.
Grenoble weather records
These records cover SAINT EXUPERY during 1975–2025. Earlier records or other stations in the city may differ.
The hottest temperature on record at the Grenoble station is 40°C, on August 13, 2003. The coldest is -18°C, on January 6, 1985.
The wettest day in the available station history brought 143 mm of precipitation, on March 29, 1984.
30 all-time records have been set at the station since 1975.
The best time to visit Grenoble
The most comfortable time to visit is typically April to June and September, when daytime highs sit near 22°C.
Winter (December–February) is chilly, with average highs around 8°C and lows near 1°C.
Spring (March–May) is mild, with average highs around 18°C and lows near 7°C.
Summer (June–August) is warm, with average highs around 27°C and lows near 16°C. It can feel humid.
Autumn (September–November) is mild, with average highs around 17°C and lows near 9°C.
Monthly climate
| Month | Average low | Average high | Precip | Rain days | Humidity | Estimated sunshine | Record high | Record low |
|---|---|---|---|---|---|---|---|---|
| January | 1° | 7° | 54 mm | 13 | 78% | 36% | 21° | -18° |
| February | 1° | 9° | 46 mm | 11 | 72% | 42% | 22° | -12° |
| March | 4° | 14° | 52 mm | 12 | 68% | 40% | 26° | -9° |
| April | 7° | 17° | 66 mm | 11 | 67% | 42% | 29° | -3° |
| May | 11° | 22° | 81 mm | 13 | 73% | 35% | 33° | 0° |
| June | 14° | 26° | 68 mm | 11 | 72% | 40% | 38° | 4° |
| July | 17° | 28° | 65 mm | 9 | 66% | 57% | 39° | 7° |
| August | 16° | 28° | 67 mm | 9 | 66% | 55% | 40° | 6° |
| September | 12° | 23° | 80 mm | 10 | 76% | 43% | 34° | 2° |
| October | 9° | 18° | 93 mm | 14 | 78% | 36% | 31° | -4° |
| November | 4° | 12° | 89 mm | 14 | 82% | 36% | 22° | -7° |
| December | 2° | 8° | 61 mm | 14 | 81% | 34% | 20° | -11° |
Station: SAINT EXUPERY, 78 km from the city. Temperature normal baseline: 1991–2020, calculated from available NOAA GHCN-Daily observations. Available station history: 1975–2025; record values refer to this station and period, not the entire city’s history. Precipitation includes rain and the water equivalent of frozen precipitation; snowfall depth is shown separately when available. Sources and methods
From ERA5 reanalysis. Sunshine is estimated from cloud cover.
Grenoble climate questions
How much rain does Grenoble get?
Grenoble gets 823 mm of precipitation in an average year, over about 141 rainy days.
What is the wettest month in Grenoble?
October is the wettest month in Grenoble, with 93 mm. February is the driest, with 46 mm.
How many rainy days does Grenoble have a year?
Grenoble has about 141 days with measurable rain in an average year. October has the most, about 14.
What is the hottest month in Grenoble?
July is the warmest month in Grenoble, with an average high of 28°C.
What is the coldest month in Grenoble?
January is the coldest month in Grenoble, with an average low of 1°C.
What is the record high temperature in Grenoble?
Within the available 1975–2025 station history, the record high at the Grenoble station is 40°C, set on August 13, 2003. The record low is -18°C, on January 6, 1985.
What is the sunniest month in Grenoble?
July is the sunniest month in Grenoble, with estimated sunshine of 57% of daylight hours from ERA5 cloud cover. December is the cloudiest.
When is the first frost in Grenoble?
The first fall freeze in Grenoble typically comes around November 16. The last spring freeze is around March 31.
What is the best time to visit Grenoble?
The most comfortable time to visit is typically April to June and September, when daytime highs sit near 22°C.