Ferney-Voltaire climate — normals and trends
Ferney-Voltaire (France) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 8.9 °C and it receives 1,529 mm of precipitation per year.
These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.
The warmest month is July (18.0 °C on average) and the coldest is January (-0.2 °C). Rainfall peaks in August.
Ferney-Voltaire averages 93 frost days, 3 hot days (≥ 30 °C) and 161 rainy days per year.
Ferney-Voltaire has warmed by +2.9 °C between 1940 and 2025, or +0.34 °C per decade. This trend is statistically significant.
The number of frost days there went from about 122 to 64 per year over the period.
The hottest day of the period reached 37.6 °C (on 7 July 2015) and the coldest -26.7 °C (on 29 December 1941).
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
Climate normals · ERA5
Ferney-VoltaireRhône-Alpes
- coords
- 46.26°, 6.11°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
8.9°C
Average daily high
13.1°C
Average daily low
4.9°C
Annual rainfall
1,529mm
Sunshine / day
8.7h
Mean relative humidity
79%
Average peak wind
10.6km/h
Seasonal range
18.2°C
Frost days (< 0 °C)
93 d/yr
Hot days (≥ 30 °C)
3 d/yr
Rainy days (≥ 1 mm)
161 d/yr
Annual snowfall
156.6 cm
Average feels-like high
11.5 °C
Average feels-like low
2.7 °C
Average peak gust
34.4 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
12.9 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.9 °C
since 1940
+0.3 °C per decade · r² = 0.68 · p = < 0.001
Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).
A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.
Records for the period
Hottest day
37.6 °C
7 July 2015
Coldest day
-26.7 °C
29 December 1941
Wettest day
81 mm
7 August 1978
Windiest day
37.2 km/h
25 April 1972
Strongest gust
127.4 km/h
28 December 1999
Hottest feels-like
38.6 °C
26 June 2019
Coldest feels-like
-31.6 °C
29 December 1941
Snowiest day
34.3 cm
17 April 2005
Sunniest day
15.0 h
20 May 1940
Normals computed over complete calendar years 1940–2025.
A specific year
Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?
Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 5.9 °C | +2.9 °C | 200 mm | +74 mm |
| Feb | 7.5 °C | +2.7 °C | 69 mm | -47 mm |
| Mar | 11.8 °C | +2.8 °C | 68 mm | -49 mm |
| Apr | 16.7 °C | +3.7 °C | 112 mm | -4 mm |
| May | 18.5 °C | +1.5 °C | 131 mm | -8 mm |
| Jun | 26.5 °C | +6.0 °C | 178 mm | +42 mm |
| Jul | 24.3 °C | +1.5 °C | 107 mm | -20 mm |
| Aug | 26.5 °C | +4.2 °C | 104 mm | -37 mm |
| Sep | 18.9 °C | +0.1 °C | 212 mm | +91 mm |
| Oct | 13.8 °C | -0.2 °C | 220 mm | +104 mm |
| Nov | 8.9 °C | +1.2 °C | 150 mm | +15 mm |
| Dec | 6.2 °C | +2.3 °C | 44 mm | -95 mm |
The year's extremes
What was the weather like that day?
Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.
Frequently asked questions
What is the climate of Ferney-Voltaire?
Ferney-Voltaire has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 8.9 °C and it receives 1,529 mm of precipitation per year.
What is the hottest day ever recorded in Ferney-Voltaire?
The hottest day measured in Ferney-Voltaire between 1940 and 2025 was 7 July 2015, reaching 37.6 °C.
What is the coldest day in Ferney-Voltaire?
The coldest day measured in Ferney-Voltaire between 1940 and 2025 was 29 December 1941, at -26.7 °C.
Does it snow in Ferney-Voltaire?
Yes. Ferney-Voltaire gets on average 156.6 cm of snow per year and has around 93 frost days.
Has the climate of Ferney-Voltaire warmed?
Yes: Ferney-Voltaire warmed by +2.9 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Ferney-Voltaire?
The wettest day measured in Ferney-Voltaire between 1940 and 2025 was 7 August 1978, with 81 mm of rain in 24 hours.
What was the windiest day in Ferney-Voltaire?
The windiest day measured in Ferney-Voltaire between 1940 and 2025 was 25 April 1972, with winds reaching 37.2 km/h.
What is the warmest month in Ferney-Voltaire?
The warmest month in Ferney-Voltaire is July (18.0 °C on average); the coldest is January (-0.2 °C).
How much does it rain in Ferney-Voltaire?
Ferney-Voltaire receives on average 1,529 mm of precipitation per year, spread over about 161 rainy days.
Is it sunny in Ferney-Voltaire?
Ferney-Voltaire gets on average 8.7 hours of sunshine per day, roughly 3,175 hours per year over 1940-2025.
What is the biggest single-day snowfall in Ferney-Voltaire?
The heaviest 24-hour snowfall measured in Ferney-Voltaire between 1940 and 2025 was 17 April 2005, with 34.3 cm.
Are there tropical nights in Ferney-Voltaire?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Ferney-Voltaire.
What was the most extreme apparent temperature in Ferney-Voltaire?
In Ferney-Voltaire, between 1940 and 2025, the highest apparent temperature reached 38.6 °C on 26 June 2019, and the lowest was -31.6 °C on 29 December 1941.
Compare Ferney-Voltaire with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Ferney-Voltaire