Sisteron climate — normals and trends
Sisteron (France) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 9.4 °C and it receives 884 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 (19.1 °C on average) and the coldest is January (-0.3 °C). Rainfall peaks in November.
Sisteron averages 116 frost days, 4 hot days (≥ 30 °C) and 107 rainy days per year.
Sisteron has warmed by +3.1 °C between 1940 and 2025, or +0.36 °C per decade. This trend is statistically significant.
The number of frost days there went from about 143 to 89 per year over the period.
The hottest day of the period reached 36.9 °C (on 10 August 2025) and the coldest -28.2 °C (on 10 January 1945).
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
SisteronProvence-Alpes-Côte d'Azur
- coords
- 44.19°, 5.95°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
9.4°C
Average daily high
14.8°C
Average daily low
3.7°C
Annual rainfall
884mm
Sunshine / day
10.1h
Mean relative humidity
70%
Average peak wind
11.3km/h
Seasonal range
19.4°C
Frost days (< 0 °C)
116 d/yr
Hot days (≥ 30 °C)
4 d/yr
Rainy days (≥ 1 mm)
107 d/yr
Annual snowfall
60.3 cm
Average feels-like high
13.2 °C
Average feels-like low
1.0 °C
Average peak gust
33.2 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
15.5 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+3.1 °C
since 1940
+0.4 °C per decade · r² = 0.71 · 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
36.9 °C
10 August 2025
Coldest day
-28.2 °C
10 January 1945
Wettest day
84 mm
16 September 1960
Windiest day
34.7 km/h
3 April 1973
Strongest gust
104.8 km/h
4 November 2014
Hottest feels-like
36.7 °C
9 August 2025
Coldest feels-like
-33.3 °C
10 January 1945
Snowiest day
23.7 cm
8 January 2010
Sunniest day
15.0 h
1 June 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 | 9.2 °C | +4.2 °C | 136 mm | +70 mm |
| Feb | 11.0 °C | +4.2 °C | 37 mm | -28 mm |
| Mar | 13.3 °C | +2.7 °C | 127 mm | +53 mm |
| Apr | 17.4 °C | +3.5 °C | 171 mm | +81 mm |
| May | 20.1 °C | +2.3 °C | 100 mm | +4 mm |
| Jun | 28.7 °C | +7.0 °C | 58 mm | -11 mm |
| Jul | 27.6 °C | +2.7 °C | 23 mm | -13 mm |
| Aug | 29.2 °C | +4.5 °C | 59 mm | +10 mm |
| Sep | 22.1 °C | +1.1 °C | 78 mm | +10 mm |
| Oct | 17.5 °C | +1.6 °C | 106 mm | +10 mm |
| Nov | 11.5 °C | +1.6 °C | 80 mm | -17 mm |
| Dec | 9.8 °C | +3.9 °C | 73 mm | -6 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 Sisteron?
Sisteron has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 9.4 °C and it receives 884 mm of precipitation per year.
What is the hottest day ever recorded in Sisteron?
The hottest day measured in Sisteron between 1940 and 2025 was 10 August 2025, reaching 36.9 °C.
What is the coldest day in Sisteron?
The coldest day measured in Sisteron between 1940 and 2025 was 10 January 1945, at -28.2 °C.
Does it snow in Sisteron?
Yes. Sisteron gets on average 60.3 cm of snow per year and has around 116 frost days.
Has the climate of Sisteron warmed?
Yes: Sisteron warmed by +3.1 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Sisteron?
The wettest day measured in Sisteron between 1940 and 2025 was 16 September 1960, with 84 mm of rain in 24 hours.
What was the windiest day in Sisteron?
The windiest day measured in Sisteron between 1940 and 2025 was 3 April 1973, with winds reaching 34.7 km/h.
What is the warmest month in Sisteron?
The warmest month in Sisteron is July (19.1 °C on average); the coldest is January (-0.3 °C).
How much does it rain in Sisteron?
Sisteron receives on average 884 mm of precipitation per year, spread over about 107 rainy days.
Is it sunny in Sisteron?
Sisteron gets on average 10.1 hours of sunshine per day, roughly 3,687 hours per year over 1940-2025.
What is the biggest single-day snowfall in Sisteron?
The heaviest 24-hour snowfall measured in Sisteron between 1940 and 2025 was 8 January 2010, with 23.7 cm.
Are there tropical nights in Sisteron?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Sisteron.
What was the most extreme apparent temperature in Sisteron?
In Sisteron, between 1940 and 2025, the highest apparent temperature reached 36.7 °C on 9 August 2025, and the lowest was -33.3 °C on 10 January 1945.
Compare Sisteron with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Sisteron