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Siedlce, Poland climate
Cfb Oceanic / temperate
Siedlce has a seasonal cool-temperate climate (Oceanic / temperate, Köppen Cfb). The hottest month is July with an average daily high near 25°C, while the coldest is January averaging around −5°C at night. Around 562 mm of precipitation falls each year, peaking in June (74 mm) and easing off in February (26 mm). At latitude 52°N, day length swings from 7.5 hours in midwinter to 16.5 hours at midsummer.
Temperature & precipitation
Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figuresClear vs cloudy days
Share of days each month that are clear, partly cloudy or cloudy · 1991–2020 · hover a month for the day countsSiedlce climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 0 | 2 | 7 | 14 | 19 | 23 | 25 | 24 | 19 | 13 | 6 | 2 |
| Avg temp (°C) | −2 | −1 | 3 | 8 | 13 | 17 | 19 | 18 | 13 | 8 | 3 | −1 |
| Avg low (°C) | −5 | −4 | −2 | 3 | 7 | 11 | 13 | 12 | 8 | 4 | 1 | −3 |
| Precipitation (mm) | 30 | 26 | 29 | 39 | 66 | 74 | 68 | 69 | 51 | 42 | 32 | 35 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 0 | 2 | 7 | 14 | 19 | 23 |
| Avg temp (°C) | −2 | −1 | 3 | 8 | 13 | 17 |
| Avg low (°C) | −5 | −4 | −2 | 3 | 7 | 11 |
| Precipitation (mm) | 30 | 26 | 29 | 39 | 66 | 74 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 25 | 24 | 19 | 13 | 6 | 2 |
| Avg temp (°C) | 19 | 18 | 13 | 8 | 3 | −1 |
| Avg low (°C) | 13 | 12 | 8 | 4 | 1 | −3 |
| Precipitation (mm) | 68 | 69 | 51 | 42 | 32 | 35 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 13 | 12 | 11 | 10 | 12 | 12 | 12 | 10 | 10 | 10 | 11 | 13 |
| Days with high ≥ 32°C (days) | — | — | — | — | — | 0.2 | 1 | 1 | 0.0 | — | — | — |
| Days with low ≤ 0°C (days) | 19 | 18 | 16 | 8 | 1 | — | — | — | 0.6 | 5 | 11 | 18 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 13 | 12 | 11 | 10 | 12 | 12 |
| Days with high ≥ 32°C (days) | — | — | — | — | — | 0.2 |
| Days with low ≤ 0°C (days) | 19 | 18 | 16 | 8 | 1 | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 12 | 10 | 10 | 10 | 11 | 13 |
| Days with high ≥ 32°C (days) | 1 | 1 | 0.0 | — | — | — |
| Days with low ≤ 0°C (days) | — | — | 0.6 | 5 | 11 | 18 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 76 | 76 | 70 | 65 | 64 | 64 | 64 | 61 | 64 | 70 | 78 | 75 |
| Clear days (≤ 30% cloud) | 2 | 2 | 4 | 5 | 5 | 5 | 4 | 6 | 5 | 4 | 2 | 3 |
| Partly cloudy days (30–70%) | 7 | 7 | 8 | 9 | 11 | 11 | 11 | 12 | 10 | 8 | 6 | 7 |
| Cloudy days (≥ 70%) | 21 | 19 | 19 | 16 | 15 | 15 | 15 | 13 | 15 | 19 | 22 | 21 |
| Relative humidity (%) | 95 | 93 | 86 | 79 | 75 | 70 | 67 | 65 | 73 | 83 | 92 | 95 |
| Wind speed (km/h) | 13.2 | 13.1 | 12.6 | 10.6 | 9.9 | 9.7 | 9.5 | 9.1 | 10.2 | 11.3 | 11.8 | 12.4 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 76 | 76 | 70 | 65 | 64 | 64 |
| Clear days (≤ 30% cloud) | 2 | 2 | 4 | 5 | 5 | 5 |
| Partly cloudy days (30–70%) | 7 | 7 | 8 | 9 | 11 | 11 |
| Cloudy days (≥ 70%) | 21 | 19 | 19 | 16 | 15 | 15 |
| Relative humidity (%) | 95 | 93 | 86 | 79 | 75 | 70 |
| Wind speed (km/h) | 13.2 | 13.1 | 12.6 | 10.6 | 9.9 | 9.7 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 64 | 61 | 64 | 70 | 78 | 75 |
| Clear days (≤ 30% cloud) | 4 | 6 | 5 | 4 | 2 | 3 |
| Partly cloudy days (30–70%) | 11 | 12 | 10 | 8 | 6 | 7 |
| Cloudy days (≥ 70%) | 15 | 13 | 15 | 19 | 22 | 21 |
| Relative humidity (%) | 67 | 65 | 73 | 83 | 92 | 95 |
| Wind speed (km/h) | 9.5 | 9.1 | 10.2 | 11.3 | 11.8 | 12.4 |
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 30 years of daily observations at Siedlce, a weather station, about 10 km from the city centre. The underlying daily records come from NOAA's global station network.
Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.