Polná climate — normals and trends
Polná (Czechia) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 7.2 °C and it receives 753 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 (16.9 °C on average) and the coldest is January (-3.1 °C). Rainfall peaks in July.
Polná averages 115 frost days, 1 hot days (≥ 30 °C) and 143 rainy days per year.
Polná has warmed by +2.2 °C between 1940 and 2025, or +0.26 °C per decade. This trend is statistically significant.
The number of frost days there went from about 134 to 96 per year over the period.
The hottest day of the period reached 35.4 °C (on 27 July 1983) and the coldest -29.0 °C (on 10 February 1956).
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
PolnáVysocina
- coords
- 49.49°, 15.72°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
7.2°C
Average daily high
10.8°C
Average daily low
3.8°C
Annual rainfall
753mm
Sunshine / day
7.6h
Mean relative humidity
80%
Average peak wind
18.2km/h
Seasonal range
20.0°C
Frost days (< 0 °C)
115 d/yr
Hot days (≥ 30 °C)
1 d/yr
Rainy days (≥ 1 mm)
143 d/yr
Annual snowfall
94.1 cm
Average feels-like high
8.0 °C
Average feels-like low
0.5 °C
Average peak gust
37.6 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
11.2 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.2 °C
since 1940
+0.3 °C per decade · r² = 0.48 · 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
35.4 °C
27 July 1983
Coldest day
-29.0 °C
10 February 1956
Wettest day
83 mm
18 July 2010
Windiest day
49.0 km/h
4 January 1976
Strongest gust
120.2 km/h
19 January 2007
Hottest feels-like
36.8 °C
5 July 1957
Coldest feels-like
-34.4 °C
10 February 1956
Snowiest day
18.1 cm
30 March 1979
Sunniest day
16.0 h
24 June 2005
Normals computed over complete calendar years 1940–2025.
A specific year
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Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 1.5 °C | +2.4 °C | 35 mm | -10 mm |
| Feb | 1.7 °C | +0.7 °C | 13 mm | -30 mm |
| Mar | 10.1 °C | +4.4 °C | 45 mm | -4 mm |
| Apr | 14.3 °C | +2.8 °C | 46 mm | -11 mm |
| May | 15.2 °C | -1.0 °C | 51 mm | -32 mm |
| Jun | 22.6 °C | +3.1 °C | 70 mm | -21 mm |
| Jul | 22.0 °C | +0.6 °C | 119 mm | +19 mm |
| Aug | 22.6 °C | +1.3 °C | 70 mm | -13 mm |
| Sep | 17.8 °C | +0.8 °C | 86 mm | +25 mm |
| Oct | 10.3 °C | -0.9 °C | 40 mm | -4 mm |
| Nov | 4.7 °C | 0.0 °C | 55 mm | +6 mm |
| Dec | 2.4 °C | +1.8 °C | 27 mm | -21 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 Polná?
Polná has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 7.2 °C and it receives 753 mm of precipitation per year.
What is the hottest day ever recorded in Polná?
The hottest day measured in Polná between 1940 and 2025 was 27 July 1983, reaching 35.4 °C.
What is the coldest day in Polná?
The coldest day measured in Polná between 1940 and 2025 was 10 February 1956, at -29.0 °C.
Does it snow in Polná?
Yes. Polná gets on average 94.1 cm of snow per year and has around 115 frost days.
Has the climate of Polná warmed?
Yes: Polná warmed by +2.2 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Polná?
The wettest day measured in Polná between 1940 and 2025 was 18 July 2010, with 83 mm of rain in 24 hours.
What was the windiest day in Polná?
The windiest day measured in Polná between 1940 and 2025 was 4 January 1976, with winds reaching 49.0 km/h.
What is the warmest month in Polná?
The warmest month in Polná is July (16.9 °C on average); the coldest is January (-3.1 °C).
How much does it rain in Polná?
Polná receives on average 753 mm of precipitation per year, spread over about 143 rainy days.
Is it sunny in Polná?
Polná 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 Polná?
The heaviest 24-hour snowfall measured in Polná between 1940 and 2025 was 30 March 1979, with 18.1 cm.
Are there tropical nights in Polná?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Polná.
What was the most extreme apparent temperature in Polná?
In Polná, between 1940 and 2025, the highest apparent temperature reached 36.8 °C on 5 July 1957, and the lowest was -34.4 °C on 10 February 1956.
Compare Polná with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Polná