Mornant climate — normals and trends
Mornant (France) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 11.1 °C and it receives 943 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 (20.3 °C on average) and the coldest is January (2.4 °C). Rainfall peaks in May.
Mornant averages 57 frost days, 13 hot days (≥ 30 °C) and 137 rainy days per year.
Mornant has warmed by +2.5 °C between 1940 and 2025, or +0.30 °C per decade. This trend is statistically significant.
The number of frost days there went from about 74 to 40 per year over the period.
The hottest day of the period reached 39.1 °C (on 24 August 2023) and the coldest -22.8 °C (on 5 February 1963).
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
MornantRhône-Alpes
- coords
- 45.62°, 4.67°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
11.1°C
Average daily high
15.4°C
Average daily low
7.1°C
Annual rainfall
943mm
Sunshine / day
8.9h
Mean relative humidity
75%
Average peak wind
15.2km/h
Seasonal range
17.9°C
Frost days (< 0 °C)
57 d/yr
Hot days (≥ 30 °C)
13 d/yr
Rainy days (≥ 1 mm)
137 d/yr
Annual snowfall
30.1 cm
Average feels-like high
13.5 °C
Average feels-like low
4.9 °C
Average peak gust
36.4 km/h
Tropical nights (≥ 20 °C)
2 d/yr
Solar radiation
13.2 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.5 °C
since 1940
+0.3 °C per decade · r² = 0.61 · 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
39.1 °C
24 August 2023
Coldest day
-22.8 °C
5 February 1963
Wettest day
77 mm
21 August 1954
Windiest day
45.5 km/h
25 April 2019
Strongest gust
108.4 km/h
6 November 2000
Hottest feels-like
40.8 °C
27 June 2019
Coldest feels-like
-27.4 °C
5 February 1963
Snowiest day
27.6 cm
7 January 1994
Sunniest day
15.0 h
2 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 | 7.8 °C | +2.4 °C | 107 mm | +43 mm |
| Feb | 9.5 °C | +2.0 °C | 57 mm | -5 mm |
| Mar | 12.7 °C | +1.2 °C | 92 mm | +24 mm |
| Apr | 17.9 °C | +3.0 °C | 81 mm | +1 mm |
| May | 20.6 °C | +1.7 °C | 76 mm | -19 mm |
| Jun | 28.7 °C | +5.8 °C | 86 mm | +6 mm |
| Jul | 27.0 °C | +1.4 °C | 53 mm | -16 mm |
| Aug | 29.0 °C | +3.8 °C | 62 mm | -20 mm |
| Sep | 21.0 °C | -0.3 °C | 173 mm | +83 mm |
| Oct | 15.8 °C | -0.1 °C | 85 mm | -8 mm |
| Nov | 11.3 °C | +1.6 °C | 122 mm | +31 mm |
| Dec | 8.5 °C | +2.3 °C | 59 mm | -11 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 Mornant?
Mornant has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 11.1 °C and it receives 943 mm of precipitation per year.
What is the hottest day ever recorded in Mornant?
The hottest day measured in Mornant between 1940 and 2025 was 24 August 2023, reaching 39.1 °C.
What is the coldest day in Mornant?
The coldest day measured in Mornant between 1940 and 2025 was 5 February 1963, at -22.8 °C.
Does it snow in Mornant?
Yes. Mornant gets on average 30.1 cm of snow per year and has around 57 frost days.
Has the climate of Mornant warmed?
Yes: Mornant warmed by +2.5 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Mornant?
The wettest day measured in Mornant between 1940 and 2025 was 21 August 1954, with 77 mm of rain in 24 hours.
What was the windiest day in Mornant?
The windiest day measured in Mornant between 1940 and 2025 was 25 April 2019, with winds reaching 45.5 km/h.
What is the warmest month in Mornant?
The warmest month in Mornant is July (20.3 °C on average); the coldest is January (2.4 °C).
How much does it rain in Mornant?
Mornant receives on average 943 mm of precipitation per year, spread over about 137 rainy days.
Is it sunny in Mornant?
Mornant gets on average 8.9 hours of sunshine per day, roughly 3,249 hours per year over 1940-2025.
What is the biggest single-day snowfall in Mornant?
The heaviest 24-hour snowfall measured in Mornant between 1940 and 2025 was 7 January 1994, with 27.6 cm.
Are there tropical nights in Mornant?
Yes: Mornant has on average 2 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Mornant?
In Mornant, between 1940 and 2025, the highest apparent temperature reached 40.8 °C on 27 June 2019, and the lowest was -27.4 °C on 5 February 1963.
Compare Mornant with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Mornant