Château-Thierry climate — normals and trends
Château-Thierry (France) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 10.4 °C and it receives 761 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 (18.5 °C on average) and the coldest is January (2.6 °C). Rainfall peaks in December.
Château-Thierry averages 49 frost days, 5 hot days (≥ 30 °C) and 138 rainy days per year.
Château-Thierry has warmed by +1.9 °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 62 to 36 per year over the period.
The hottest day of the period reached 41.8 °C (on 25 July 2019) and the coldest -21.4 °C (on 30 December 1950).
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
Château-ThierryHauts-de-France
- coords
- 49.05°, 3.40°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
10.4°C
Average daily high
14.1°C
Average daily low
6.9°C
Annual rainfall
761mm
Sunshine / day
7.9h
Mean relative humidity
79%
Average peak wind
18.7km/h
Seasonal range
15.9°C
Frost days (< 0 °C)
49 d/yr
Hot days (≥ 30 °C)
5 d/yr
Rainy days (≥ 1 mm)
138 d/yr
Annual snowfall
18.9 cm
Average feels-like high
11.7 °C
Average feels-like low
4.1 °C
Average peak gust
37.5 km/h
Tropical nights (≥ 20 °C)
1 d/yr
Solar radiation
11.5 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.9 °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
41.8 °C
25 July 2019
Coldest day
-21.4 °C
30 December 1950
Wettest day
63 mm
22 June 2023
Windiest day
58.5 km/h
3 February 1990
Strongest gust
132.8 km/h
26 December 1999
Hottest feels-like
41.5 °C
25 July 2019
Coldest feels-like
-26.3 °C
30 December 1950
Snowiest day
14.8 cm
9 January 1968
Sunniest day
15.7 h
3 July 2011
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 | 6.0 °C | +1.1 °C | 133 mm | +70 mm |
| Feb | 7.0 °C | +0.5 °C | 52 mm | -8 mm |
| Mar | 13.4 °C | +3.1 °C | 19 mm | -42 mm |
| Apr | 17.9 °C | +4.2 °C | 35 mm | -25 mm |
| May | 20.3 °C | +2.8 °C | 41 mm | -29 mm |
| Jun | 25.8 °C | +5.1 °C | 61 mm | -4 mm |
| Jul | 24.7 °C | +1.7 °C | 120 mm | +60 mm |
| Aug | 25.4 °C | +2.5 °C | 68 mm | +7 mm |
| Sep | 19.8 °C | +0.1 °C | 76 mm | +18 mm |
| Oct | 15.4 °C | +0.7 °C | 68 mm | +3 mm |
| Nov | 10.4 °C | +1.5 °C | 59 mm | -10 mm |
| Dec | 8.2 °C | +2.4 °C | 37 mm | -35 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 Château-Thierry?
Château-Thierry has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 10.4 °C and it receives 761 mm of precipitation per year.
What is the hottest day ever recorded in Château-Thierry?
The hottest day measured in Château-Thierry between 1940 and 2025 was 25 July 2019, reaching 41.8 °C.
What is the coldest day in Château-Thierry?
The coldest day measured in Château-Thierry between 1940 and 2025 was 30 December 1950, at -21.4 °C.
Does it snow in Château-Thierry?
Yes. Château-Thierry gets on average 18.9 cm of snow per year and has around 49 frost days.
Has the climate of Château-Thierry warmed?
Yes: Château-Thierry warmed by +1.9 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Château-Thierry?
The wettest day measured in Château-Thierry between 1940 and 2025 was 22 June 2023, with 63 mm of rain in 24 hours.
What was the windiest day in Château-Thierry?
The windiest day measured in Château-Thierry between 1940 and 2025 was 3 February 1990, with winds reaching 58.5 km/h.
What is the warmest month in Château-Thierry?
The warmest month in Château-Thierry is July (18.5 °C on average); the coldest is January (2.6 °C).
How much does it rain in Château-Thierry?
Château-Thierry receives on average 761 mm of precipitation per year, spread over about 138 rainy days.
Is it sunny in Château-Thierry?
Château-Thierry gets on average 7.9 hours of sunshine per day, roughly 2,884 hours per year over 1940-2025.
What is the biggest single-day snowfall in Château-Thierry?
The heaviest 24-hour snowfall measured in Château-Thierry between 1940 and 2025 was 9 January 1968, with 14.8 cm.
Are there tropical nights in Château-Thierry?
Yes: Château-Thierry has on average 1 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Château-Thierry?
In Château-Thierry, between 1940 and 2025, the highest apparent temperature reached 41.5 °C on 25 July 2019, and the lowest was -26.3 °C on 30 December 1950.
Compare Château-Thierry with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Château-Thierry