Weather on September 17 in Warsaw
Historical weather data for September 17 in Warsaw, Poland
Based on 55 years of data from OKECIE
About This Date
September 17th in Warsaw, Poland typically brings mild fall weather, with average highs around 18°C and lows near 8°C. Over 55 years of records, the warmest September 17th was in 2015 (23°C average), while the coldest was 1971 (7°C) — a 30°F range across recorded history. Rain or other precipitation has occurred on about 35% of September 17th dates historically, with the wettest September 17th recording 1.75" of rain. The last decade has been 6.5°F warmer on this date compared to 20-30 years ago.
The last decade has been 6.5°F warmer on this date compared to 20-30 years ago.
Planning for September 17th in Warsaw? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Year by Year History
| Year | High | Low | Precip (mm) |
|---|---|---|---|
| 2025 | 17°C (62°F) | 11°C (51°F) | 23 mm |
| 2024 | 26°C (79°F) | 14°C (57°F) | 0 mm |
| 2023 | 26°C (79°F) | 12°C (53°F) | 1 mm |
| 2022 | -- | 8°C (46°F) | -- |
| 2021 | 18°C (65°F) | 14°C (58°F) | 23 mm |
| 2020 | 23°C (73°F) | -- | 0 mm |
| 2019 | 16°C (60°F) | 7°C (44°F) | 10 mm |
| 2018 | 23°C (74°F) | 8°C (47°F) | 0 mm |
| 2017 | 15°C (59°F) | -- | 1 mm |
| 2016 | -- | 11°C (52°F) | 0 mm |
| 2015 | 29°C (85°F) | 17°C (63°F) | 0 mm |
| 2014 | 21°C (69°F) | 9°C (48°F) | 0 mm |
| 2013 | 16°C (60°F) | -- | 6 mm |
| 2012 | 22°C (71°F) | -- | 0 mm |
| 2011 | 19°C (66°F) | 3°C (37°F) | 0 mm |
| 2010 | 18°C (65°F) | 8°C (46°F) | 6 mm |
| 2009 | 21°C (69°F) | 12°C (53°F) | 0 mm |
| 2008 | 11°C (52°F) | -- | 1 mm |
| 2007 | 23°C (74°F) | -- | 0 mm |
| 2006 | 22°C (71°F) | 11°C (51°F) | 0 mm |
| 2005 | -- | 7°C (44°F) | 44 mm |
| 2004 | 17°C (62°F) | 2°C (35°F) | 0 mm |
| 2003 | -- | 9°C (49°F) | -- |
| 2002 | 17°C (63°F) | 8°C (47°F) | 1 mm |
| 2001 | 16°C (60°F) | 10°C (50°F) | -- |
| 2000 | 13°C (55°F) | -- | 1 mm |
| 1999 | 19°C (66°F) | 6°C (43°F) | 0 mm |
| 1998 | 16°C (61°F) | -- | 20 mm |
| 1997 | 22°C (71°F) | 7°C (45°F) | 0 mm |
| 1996 | 12°C (54°F) | -- | 1 mm |
| 1995 | 14°C (57°F) | 8°C (47°F) | 10 mm |
| 1994 | 17°C (63°F) | 8°C (46°F) | 8 mm |
| 1993 | 14°C (58°F) | 9°C (49°F) | -- |
| 1992 | 16°C (61°F) | 12°C (53°F) | 0 mm |
| 1991 | 22°C (71°F) | -- | -- |
| 1990 | 14°C (58°F) | -- | -- |
| 1989 | 22°C (71°F) | 12°C (53°F) | -- |
| 1988 | 16°C (61°F) | 9°C (48°F) | -- |
| 1987 | 17°C (63°F) | 3°C (38°F) | 0 mm |
| 1986 | 14°C (58°F) | -- | 0 mm |
| 1985 | 14°C (58°F) | 10°C (50°F) | 1 mm |
| 1984 | 13°C (56°F) | 11°C (51°F) | 0 mm |
| 1983 | 19°C (66°F) | 13°C (55°F) | 18 mm |
| 1982 | 20°C (68°F) | -- | 0 mm |
| 1981 | 13°C (55°F) | 3°C (37°F) | 5 mm |
| 1980 | 17°C (63°F) | 5°C (41°F) | 0 mm |
| 1979 | 14°C (57°F) | 5°C (41°F) | 0 mm |
| 1978 | 21°C (70°F) | 6°C (43°F) | 0 mm |
| 1977 | 13°C (55°F) | 3°C (37°F) | 0 mm |
| 1976 | 22°C (72°F) | 10°C (50°F) | 10 mm |
| 1975 | 25°C (77°F) | 7°C (45°F) | 0 mm |
| 1974 | 20°C (68°F) | 7°C (45°F) | 0 mm |
| 1973 | 17°C (63°F) | 5°C (41°F) | 0 mm |
| 1972 | 13°C (55°F) | 11°C (51°F) | 0 mm |
| 1971 | 11°C (52°F) | 2°C (36°F) | 0 mm |