Longuyon climate — normals and trends
Longuyon (France) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 9.4 °C and it receives 883 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 (17.6 °C on average) and the coldest is January (1.2 °C). Rainfall peaks in December.
Longuyon averages 63 frost days, 3 hot days (≥ 30 °C) and 149 rainy days per year.
Longuyon 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 77 to 49 per year over the period.
The hottest day of the period reached 39.2 °C (on 25 July 2019) and the coldest -18.0 °C (on 23 January 1940).
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
LonguyonGrand Est
- coords
- 49.44°, 5.61°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
9.4°C
Average daily high
12.8°C
Average daily low
6.1°C
Annual rainfall
883mm
Sunshine / day
7.6h
Mean relative humidity
80%
Average peak wind
18.9km/h
Seasonal range
16.4°C
Frost days (< 0 °C)
63 d/yr
Hot days (≥ 30 °C)
3 d/yr
Rainy days (≥ 1 mm)
149 d/yr
Annual snowfall
36.4 cm
Average feels-like high
10.3 °C
Average feels-like low
3.1 °C
Average peak gust
37.3 km/h
Tropical nights (≥ 20 °C)
1 d/yr
Solar radiation
11.2 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.8 °C
since 1940
+0.2 °C per decade · r² = 0.39 · 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
39.2 °C
25 July 2019
Coldest day
-18.0 °C
23 January 1940
Wettest day
58 mm
11 May 1970
Windiest day
56.5 km/h
3 February 1990
Strongest gust
123.5 km/h
24 November 1984
Hottest feels-like
38.6 °C
2 July 2025
Coldest feels-like
-25.1 °C
6 January 1947
Snowiest day
12.5 cm
7 January 1968
Sunniest day
15.4 h
28 June 2019
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 | 5.2 °C | +1.9 °C | 141 mm | +59 mm |
| Feb | 6.0 °C | +1.1 °C | 46 mm | -26 mm |
| Mar | 13.0 °C | +4.0 °C | 16 mm | -56 mm |
| Apr | 16.7 °C | +3.9 °C | 54 mm | -11 mm |
| May | 19.3 °C | +2.5 °C | 40 mm | -36 mm |
| Jun | 24.7 °C | +4.7 °C | 69 mm | -3 mm |
| Jul | 23.6 °C | +1.6 °C | 103 mm | +38 mm |
| Aug | 24.8 °C | +3.1 °C | 37 mm | -32 mm |
| Sep | 18.6 °C | +0.3 °C | 157 mm | +90 mm |
| Oct | 13.9 °C | +0.5 °C | 104 mm | +31 mm |
| Nov | 9.5 °C | +2.0 °C | 70 mm | -13 mm |
| Dec | 7.3 °C | +3.0 °C | 43 mm | -48 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 Longuyon?
Longuyon has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 9.4 °C and it receives 883 mm of precipitation per year.
What is the hottest day ever recorded in Longuyon?
The hottest day measured in Longuyon between 1940 and 2025 was 25 July 2019, reaching 39.2 °C.
What is the coldest day in Longuyon?
The coldest day measured in Longuyon between 1940 and 2025 was 23 January 1940, at -18.0 °C.
Does it snow in Longuyon?
Yes. Longuyon gets on average 36.4 cm of snow per year and has around 63 frost days.
Has the climate of Longuyon warmed?
Yes: Longuyon warmed by +1.8 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Longuyon?
The wettest day measured in Longuyon between 1940 and 2025 was 11 May 1970, with 58 mm of rain in 24 hours.
What was the windiest day in Longuyon?
The windiest day measured in Longuyon between 1940 and 2025 was 3 February 1990, with winds reaching 56.5 km/h.
What is the warmest month in Longuyon?
The warmest month in Longuyon is July (17.6 °C on average); the coldest is January (1.2 °C).
How much does it rain in Longuyon?
Longuyon receives on average 883 mm of precipitation per year, spread over about 149 rainy days.
Is it sunny in Longuyon?
Longuyon gets on average 7.6 hours of sunshine per day, roughly 2,774 hours per year over 1940-2025.
What is the biggest single-day snowfall in Longuyon?
The heaviest 24-hour snowfall measured in Longuyon between 1940 and 2025 was 7 January 1968, with 12.5 cm.
Are there tropical nights in Longuyon?
Yes: Longuyon has on average 1 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Longuyon?
In Longuyon, between 1940 and 2025, the highest apparent temperature reached 38.6 °C on 2 July 2025, and the lowest was -25.1 °C on 6 January 1947.
Compare Longuyon with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Longuyon