Decize climate — normals and trends
Decize (France) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 11.4 °C and it receives 836 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 (20.2 °C on average) and the coldest is January (3.2 °C). Rainfall peaks in November.
Decize averages 46 frost days, 14 hot days (≥ 30 °C) and 138 rainy days per year.
Decize has warmed by +1.8 °C between 1940 and 2025, or +0.22 °C per decade. This trend is statistically significant.
The number of frost days there went from about 55 to 37 per year over the period.
The hottest day of the period reached 40.8 °C (on 25 July 2019) and the coldest -20.8 °C (on 13 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
DecizeBourgogne
- coords
- 46.83°, 3.46°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
11.4°C
Average daily high
15.6°C
Average daily low
7.6°C
Annual rainfall
836mm
Sunshine / day
8.3h
Mean relative humidity
76%
Average peak wind
14.6km/h
Seasonal range
17.0°C
Frost days (< 0 °C)
46 d/yr
Hot days (≥ 30 °C)
14 d/yr
Rainy days (≥ 1 mm)
138 d/yr
Annual snowfall
16.2 cm
Average feels-like high
13.9 °C
Average feels-like low
5.4 °C
Average peak gust
31.8 km/h
Tropical nights (≥ 20 °C)
3 d/yr
Solar radiation
12.4 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.8 °C
since 1940
+0.2 °C per decade · r² = 0.40 · 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
40.8 °C
25 July 2019
Coldest day
-20.8 °C
13 January 1945
Wettest day
62 mm
30 September 1958
Windiest day
45.5 km/h
26 December 1999
Strongest gust
119.5 km/h
26 December 1999
Hottest feels-like
42.2 °C
27 June 2019
Coldest feels-like
-25.3 °C
12 January 1945
Snowiest day
11.9 cm
23 January 2007
Sunniest day
15.2 h
23 June 2025
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 | 7.8 °C | +1.8 °C | 95 mm | +23 mm |
| Feb | 9.9 °C | +2.0 °C | 62 mm | -5 mm |
| Mar | 13.7 °C | +1.8 °C | 52 mm | -14 mm |
| Apr | 18.5 °C | +3.3 °C | 53 mm | -16 mm |
| May | 21.1 °C | +2.1 °C | 49 mm | -31 mm |
| Jun | 28.4 °C | +5.6 °C | 40 mm | -23 mm |
| Jul | 26.7 °C | +1.4 °C | 46 mm | -6 mm |
| Aug | 28.4 °C | +3.5 °C | 105 mm | +43 mm |
| Sep | 20.5 °C | -0.9 °C | 91 mm | +21 mm |
| Oct | 16.4 °C | +0.2 °C | 97 mm | +22 mm |
| Nov | 11.6 °C | +1.6 °C | 92 mm | +12 mm |
| Dec | 9.1 °C | +2.4 °C | 69 mm | -10 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 Decize?
Decize has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 11.4 °C and it receives 836 mm of precipitation per year.
What is the hottest day ever recorded in Decize?
The hottest day measured in Decize between 1940 and 2025 was 25 July 2019, reaching 40.8 °C.
What is the coldest day in Decize?
The coldest day measured in Decize between 1940 and 2025 was 13 January 1945, at -20.8 °C.
Does it snow in Decize?
Yes. Decize gets on average 16.2 cm of snow per year and has around 46 frost days.
Has the climate of Decize warmed?
Yes: Decize warmed by +1.8 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Decize?
The wettest day measured in Decize between 1940 and 2025 was 30 September 1958, with 62 mm of rain in 24 hours.
What was the windiest day in Decize?
The windiest day measured in Decize between 1940 and 2025 was 26 December 1999, with winds reaching 45.5 km/h.
What is the warmest month in Decize?
The warmest month in Decize is July (20.2 °C on average); the coldest is January (3.2 °C).
How much does it rain in Decize?
Decize receives on average 836 mm of precipitation per year, spread over about 138 rainy days.
Is it sunny in Decize?
Decize gets on average 8.3 hours of sunshine per day, roughly 3,030 hours per year over 1940-2025.
What is the biggest single-day snowfall in Decize?
The heaviest 24-hour snowfall measured in Decize between 1940 and 2025 was 23 January 2007, with 11.9 cm.
Are there tropical nights in Decize?
Yes: Decize has on average 3 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Decize?
In Decize, between 1940 and 2025, the highest apparent temperature reached 42.2 °C on 27 June 2019, and the lowest was -25.3 °C on 12 January 1945.
Compare Decize with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Decize