Nature — Twierdza

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Climate — Twierdza: monthly averages

Month	Day (max)	Night (min)	Monthly precipitation
January	0°C	-5°C	38 mm
February	2°C	-4°C	38 mm
March	7°C	0°C	38 mm
April	14°C	4°C	53 mm
May	19°C	9°C	95 mm
June	22°C	12°C	92 mm
July	24°C	14°C	106 mm
August	24°C	14°C	75 mm
September	19°C	10°C	77 mm
October	13°C	6°C	62 mm
November	7°C	2°C	44 mm
December	1°C	-3°C	40 mm

Averages from measurements at the KROSNO station (17 km), years 1991–2020 — not a forecast. Data source: Institute of Meteorology and Water Management – National Research Institute (IMGW-PIB). IMGW-PIB data have been processed (long-term averages).