Mszczonów climate — normals and trends
Mszczonów (Poland) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 8.3 °C and it receives 637 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 (18.6 °C on average) and the coldest is January (-2.5 °C). Rainfall peaks in July.
Mszczonów averages 98 frost days, 4 hot days (≥ 30 °C) and 130 rainy days per year.
Mszczonów has warmed by +2.3 °C between 1940 and 2025, or +0.27 °C per decade. This trend is statistically significant.
The number of frost days there went from about 117 to 79 per year over the period.
The hottest day of the period reached 36.4 °C (on 29 August 1992) and the coldest -30.8 °C (on 14 January 1987).
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
MszczonówMazovia
- coords
- 51.97°, 20.52°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
8.3°C
Average daily high
12.0°C
Average daily low
4.7°C
Annual rainfall
637mm
Sunshine / day
7.4h
Mean relative humidity
78%
Average peak wind
18.0km/h
Seasonal range
21.1°C
Frost days (< 0 °C)
98 d/yr
Hot days (≥ 30 °C)
4 d/yr
Rainy days (≥ 1 mm)
130 d/yr
Annual snowfall
59.8 cm
Average feels-like high
9.3 °C
Average feels-like low
1.6 °C
Average peak gust
35.6 km/h
Tropical nights (≥ 20 °C)
1 d/yr
Solar radiation
10.6 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.3 °C
since 1940
+0.3 °C per decade · r² = 0.42 · 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
36.4 °C
29 August 1992
Coldest day
-30.8 °C
14 January 1987
Wettest day
49 mm
18 July 1970
Windiest day
54.4 km/h
20 January 1986
Strongest gust
112.0 km/h
24 November 1984
Hottest feels-like
36.8 °C
22 June 2000
Coldest feels-like
-35.8 °C
30 January 1987
Snowiest day
18.3 cm
30 January 1979
Sunniest day
15.8 h
22 June 2025
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 | 4.7 °C | +5.0 °C | 42 mm | +3 mm |
| Feb | 2.6 °C | +1.3 °C | 13 mm | -26 mm |
| Mar | 11.7 °C | +5.7 °C | 30 mm | -9 mm |
| Apr | 16.5 °C | +3.9 °C | 27 mm | -21 mm |
| May | 16.0 °C | -2.1 °C | 76 mm | +12 mm |
| Jun | 23.1 °C | +1.6 °C | 46 mm | -25 mm |
| Jul | 24.4 °C | +1.3 °C | 93 mm | +10 mm |
| Aug | 24.7 °C | +1.8 °C | 31 mm | -37 mm |
| Sep | 20.5 °C | +2.3 °C | 57 mm | +4 mm |
| Oct | 12.1 °C | -0.3 °C | 58 mm | +16 mm |
| Nov | 6.6 °C | +0.8 °C | 51 mm | +5 mm |
| Dec | 4.0 °C | +2.2 °C | 18 mm | -27 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 Mszczonów?
Mszczonów has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 8.3 °C and it receives 637 mm of precipitation per year.
What is the hottest day ever recorded in Mszczonów?
The hottest day measured in Mszczonów between 1940 and 2025 was 29 August 1992, reaching 36.4 °C.
What is the coldest day in Mszczonów?
The coldest day measured in Mszczonów between 1940 and 2025 was 14 January 1987, at -30.8 °C.
Does it snow in Mszczonów?
Yes. Mszczonów gets on average 59.8 cm of snow per year and has around 98 frost days.
Has the climate of Mszczonów warmed?
Yes: Mszczonów warmed by +2.3 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Mszczonów?
The wettest day measured in Mszczonów between 1940 and 2025 was 18 July 1970, with 49 mm of rain in 24 hours.
What was the windiest day in Mszczonów?
The windiest day measured in Mszczonów between 1940 and 2025 was 20 January 1986, with winds reaching 54.4 km/h.
What is the warmest month in Mszczonów?
The warmest month in Mszczonów is July (18.6 °C on average); the coldest is January (-2.5 °C).
How much does it rain in Mszczonów?
Mszczonów receives on average 637 mm of precipitation per year, spread over about 130 rainy days.
Is it sunny in Mszczonów?
Mszczonów gets on average 7.4 hours of sunshine per day, roughly 2,701 hours per year over 1940-2025.
What is the biggest single-day snowfall in Mszczonów?
The heaviest 24-hour snowfall measured in Mszczonów between 1940 and 2025 was 30 January 1979, with 18.3 cm.
Are there tropical nights in Mszczonów?
Yes: Mszczonów has on average 1 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Mszczonów?
In Mszczonów, between 1940 and 2025, the highest apparent temperature reached 36.8 °C on 22 June 2000, and the lowest was -35.8 °C on 30 January 1987.
Compare Mszczonów with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Mszczonów