Conthey climate — normals and trends
Conthey (Switzerland) has a subarctic climate (Dfc) under the Köppen-Geiger classification. Its mean annual temperature is 2.4 °C and it receives 1,638 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 (12.7 °C on average) and the coldest is January (-8.7 °C). Rainfall peaks in July.
Conthey averages 209 frost days, 0 hot days (≥ 30 °C) and 180 rainy days per year.
Conthey has warmed by +3.0 °C between 1940 and 2025, or +0.35 °C per decade. This trend is statistically significant.
The number of frost days there went from about 236 to 182 per year over the period.
The hottest day of the period reached 29.3 °C (on 7 July 2015) and the coldest -34.8 °C (on 7 January 1985).
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
ContheyValais
- coords
- 46.22°, 7.30°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
2.4°C
Average daily high
7.2°C
Average daily low
-2.5°C
Annual rainfall
1,638mm
Sunshine / day
9.1h
Mean relative humidity
77%
Average peak wind
6.4km/h
Seasonal range
21.4°C
Frost days (< 0 °C)
209 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
180 d/yr
Annual snowfall
510.6 cm
Average feels-like high
5.2 °C
Average feels-like low
-5.6 °C
Average peak gust
35.2 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
14.0 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+3.0 °C
since 1940
+0.4 °C per decade · r² = 0.65 · 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
29.3 °C
7 July 2015
Coldest day
-34.8 °C
7 January 1985
Wettest day
82 mm
27 September 1942
Windiest day
14.8 km/h
27 February 1990
Strongest gust
150.1 km/h
27 February 1990
Hottest feels-like
30.0 °C
7 July 2015
Coldest feels-like
-39.8 °C
7 January 1985
Snowiest day
51.2 cm
14 February 1990
Sunniest day
15.0 h
20 May 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 | -1.0 °C | +3.4 °C | 145 mm | +22 mm |
| Feb | 2.4 °C | +3.4 °C | 42 mm | -75 mm |
| Mar | 6.3 °C | +3.4 °C | 63 mm | -55 mm |
| Apr | 11.4 °C | +5.2 °C | 153 mm | +33 mm |
| May | 12.7 °C | +2.0 °C | 204 mm | +54 mm |
| Jun | 21.3 °C | +6.1 °C | 116 mm | -54 mm |
| Jul | 17.8 °C | 0.0 °C | 209 mm | +35 mm |
| Aug | 20.1 °C | +2.6 °C | 131 mm | -38 mm |
| Sep | 14.4 °C | 0.0 °C | 240 mm | +114 mm |
| Oct | 9.6 °C | +0.1 °C | 153 mm | +44 mm |
| Nov | 4.2 °C | +2.6 °C | 125 mm | -4 mm |
| Dec | 2.3 °C | +6.3 °C | 32 mm | -103 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 Conthey?
Conthey has a subarctic climate (Köppen Dfc). Over 1940-2025, the average annual temperature is 2.4 °C and it receives 1,638 mm of precipitation per year.
What is the hottest day ever recorded in Conthey?
The hottest day measured in Conthey between 1940 and 2025 was 7 July 2015, reaching 29.3 °C.
What is the coldest day in Conthey?
The coldest day measured in Conthey between 1940 and 2025 was 7 January 1985, at -34.8 °C.
Does it snow in Conthey?
Yes. Conthey gets on average 510.6 cm of snow per year and has around 209 frost days.
Has the climate of Conthey warmed?
Yes: Conthey warmed by +3.0 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Conthey?
The wettest day measured in Conthey between 1940 and 2025 was 27 September 1942, with 82 mm of rain in 24 hours.
What was the windiest day in Conthey?
The windiest day measured in Conthey between 1940 and 2025 was 27 February 1990, with winds reaching 14.8 km/h.
What is the warmest month in Conthey?
The warmest month in Conthey is July (12.7 °C on average); the coldest is January (-8.7 °C).
How much does it rain in Conthey?
Conthey receives on average 1,638 mm of precipitation per year, spread over about 180 rainy days.
Is it sunny in Conthey?
Conthey gets on average 9.1 hours of sunshine per day, roughly 3,322 hours per year over 1940-2025.
What is the biggest single-day snowfall in Conthey?
The heaviest 24-hour snowfall measured in Conthey between 1940 and 2025 was 14 February 1990, with 51.2 cm.
Are there tropical nights in Conthey?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Conthey.
What was the most extreme apparent temperature in Conthey?
In Conthey, between 1940 and 2025, the highest apparent temperature reached 30.0 °C on 7 July 2015, and the lowest was -39.8 °C on 7 January 1985.
Compare Conthey with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Conthey