Thal climate — normals and trends
Thal (Switzerland) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 8.6 °C and it receives 1,392 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 (18.2 °C on average) and the coldest is January (-1.4 °C). Rainfall peaks in June.
Thal averages 91 frost days, 2 hot days (≥ 30 °C) and 171 rainy days per year.
Thal has warmed by +2.9 °C between 1940 and 2025, or +0.34 °C per decade. This trend is statistically significant.
The number of frost days there went from about 123 to 59 per year over the period.
The hottest day of the period reached 33.2 °C (on 5 July 2015) and the coldest -24.6 °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
ThalCanton of St. Gallen
- coords
- 47.47°, 9.57°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
8.6°C
Average daily high
12.3°C
Average daily low
5.3°C
Annual rainfall
1,392mm
Sunshine / day
8.2h
Mean relative humidity
79%
Average peak wind
9.2km/h
Seasonal range
19.6°C
Frost days (< 0 °C)
91 d/yr
Hot days (≥ 30 °C)
2 d/yr
Rainy days (≥ 1 mm)
171 d/yr
Annual snowfall
148.1 cm
Average feels-like high
10.9 °C
Average feels-like low
3.3 °C
Average peak gust
26.4 km/h
Tropical nights (≥ 20 °C)
1 d/yr
Solar radiation
12.1 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.9 °C
since 1940
+0.3 °C per decade · r² = 0.66 · 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
33.2 °C
5 July 2015
Coldest day
-24.6 °C
7 January 1985
Wettest day
77 mm
11 July 1956
Windiest day
34.7 km/h
26 December 1999
Strongest gust
122.8 km/h
27 February 1990
Hottest feels-like
39.5 °C
6 July 1957
Coldest feels-like
-29.4 °C
10 February 1956
Snowiest day
23.7 cm
14 January 2021
Sunniest day
15.0 h
26 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 | 4.2 °C | +2.5 °C | 91 mm | +0 mm |
| Feb | 5.7 °C | +2.0 °C | 32 mm | -55 mm |
| Mar | 10.8 °C | +2.9 °C | 73 mm | -20 mm |
| Apr | 15.7 °C | +3.4 °C | 52 mm | -56 mm |
| May | 17.4 °C | +0.5 °C | 137 mm | -4 mm |
| Jun | 25.2 °C | +5.0 °C | 92 mm | -67 mm |
| Jul | 22.0 °C | -0.1 °C | 227 mm | +68 mm |
| Aug | 23.6 °C | +1.9 °C | 193 mm | +40 mm |
| Sep | 18.5 °C | +0.3 °C | 168 mm | +55 mm |
| Oct | 13.1 °C | -0.1 °C | 87 mm | -5 mm |
| Nov | 8.1 °C | +1.1 °C | 100 mm | -2 mm |
| Dec | 4.7 °C | +2.0 °C | 26 mm | -70 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 Thal?
Thal has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 8.6 °C and it receives 1,392 mm of precipitation per year.
What is the hottest day ever recorded in Thal?
The hottest day measured in Thal between 1940 and 2025 was 5 July 2015, reaching 33.2 °C.
What is the coldest day in Thal?
The coldest day measured in Thal between 1940 and 2025 was 7 January 1985, at -24.6 °C.
Does it snow in Thal?
Yes. Thal gets on average 148.1 cm of snow per year and has around 91 frost days.
Has the climate of Thal warmed?
Yes: Thal warmed by +2.9 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Thal?
The wettest day measured in Thal between 1940 and 2025 was 11 July 1956, with 77 mm of rain in 24 hours.
What was the windiest day in Thal?
The windiest day measured in Thal between 1940 and 2025 was 26 December 1999, with winds reaching 34.7 km/h.
What is the warmest month in Thal?
The warmest month in Thal is July (18.2 °C on average); the coldest is January (-1.4 °C).
How much does it rain in Thal?
Thal receives on average 1,392 mm of precipitation per year, spread over about 171 rainy days.
Is it sunny in Thal?
Thal gets on average 8.2 hours of sunshine per day, roughly 2,993 hours per year over 1940-2025.
What is the biggest single-day snowfall in Thal?
The heaviest 24-hour snowfall measured in Thal between 1940 and 2025 was 14 January 2021, with 23.7 cm.
Are there tropical nights in Thal?
Yes: Thal has on average 1 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Thal?
In Thal, between 1940 and 2025, the highest apparent temperature reached 39.5 °C on 6 July 1957, and the lowest was -29.4 °C on 10 February 1956.
Compare Thal with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Thal