Weather on September 21 in Vilnius
Historical weather data for September 21 in Vilnius, Lithuania
Avg High17°C (62°F)
Avg Low7°C (45°F)
Warmest202521°C
Coldest20216°C
Based on 55 years of data from VILNIUS
About This Date
September 21st in Vilnius, Lithuania typically brings mild fall weather, with average highs around 17°C and lows near 7°C. Over 55 years of records, the warmest September 21st was in 2025 (21°C average), while the coldest was 2021 (6°C) — a 28°F range across recorded history. Rain or other precipitation has occurred on about 36% of September 21st dates historically, with the wettest September 21st recording 0.61" of rain.
Planning for September 21st in Vilnius? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Year by Year History
| Year | High | Low | Precip |
|---|---|---|---|
| 2025 | 26°C (79°F) | 17°C (62°F) | 0" |
| 2024 | 22°C (71°F) | 8°C (46°F) | -- |
| 2023 | 24°C (76°F) | -- | -- |
| 2022 | -- | 8°C (46°F) | -- |
| 2021 | 7°C (44°F) | 4°C (40°F) | 0.05" |
| 2020 | 21°C (69°F) | -- | -- |
| 2019 | 14°C (57°F) | -- | 0.15" |
| 2018 | 27°C (81°F) | -- | -- |
| 2017 | -- | 10°C (50°F) | 0.61" |
| 2016 | 15°C (59°F) | -- | 0.53" |
| 2015 | 16°C (60°F) | -- | 0.41" |
| 2014 | 14°C (58°F) | 7°C (45°F) | -- |
| 2013 | 16°C (60°F) | 9°C (49°F) | -- |
| 2012 | 16°C (61°F) | -- | -- |
| 2011 | 19°C (67°F) | -- | -- |
| 2010 | -- | 8°C (46°F) | 0.1" |
| 2009 | 20°C (68°F) | 7°C (45°F) | -- |
| 2008 | 14°C (58°F) | 8°C (47°F) | 0.3" |
| 2007 | 18°C (64°F) | 3°C (38°F) | -- |
| 2006 | 18°C (64°F) | 9°C (48°F) | -- |
| 2005 | 16°C (60°F) | 12°C (53°F) | -- |
| 2004 | 15°C (59°F) | 11°C (51°F) | -- |
| 2003 | 21°C (70°F) | 6°C (43°F) | 0" |
| 2002 | 17°C (63°F) | 8°C (47°F) | -- |
| 2001 | 18°C (65°F) | 9°C (49°F) | -- |
| 2000 | 17°C (62°F) | 6°C (43°F) | -- |
| 1999 | 21°C (70°F) | 9°C (49°F) | 0" |
| 1998 | 17°C (62°F) | 5°C (41°F) | -- |
| 1997 | 13°C (56°F) | 2°C (35°F) | 0.15" |
| 1996 | 9°C (49°F) | 3°C (37°F) | 0" |
| 1995 | 11°C (52°F) | 7°C (44°F) | 0.41" |
| 1994 | 21°C (70°F) | 11°C (52°F) | 0.2" |
| 1993 | 14°C (58°F) | 1°C (34°F) | 0" |
| 1992 | 17°C (63°F) | 8°C (46°F) | 0" |
| 1991 | 16°C (61°F) | 9°C (49°F) | 0.13" |
| 1990 | 11°C (52°F) | 4°C (39°F) | 0.01" |
| 1989 | 17°C (62°F) | 9°C (49°F) | 0.02" |
| 1988 | 16°C (60°F) | 10°C (50°F) | 0.13" |
| 1987 | 12°C (53°F) | 7°C (44°F) | 0.04" |
| 1986 | 14°C (57°F) | 9°C (48°F) | 0.3" |
| 1985 | 14°C (58°F) | 7°C (45°F) | 0.11" |
| 1984 | 16°C (61°F) | 4°C (39°F) | 0" |
| 1983 | 17°C (63°F) | 12°C (53°F) | 0" |
| 1982 | 23°C (73°F) | 10°C (50°F) | 0" |
| 1981 | 18°C (65°F) | 7°C (45°F) | 0.36" |
| 1980 | 16°C (61°F) | 4°C (40°F) | 0" |
| 1979 | 21°C (69°F) | 13°C (55°F) | 0" |
| 1978 | 10°C (50°F) | 4°C (40°F) | 0.09" |
| 1977 | 11°C (51°F) | 3°C (38°F) | 0" |
| 1976 | 14°C (58°F) | 2°C (35°F) | 0" |
| 1975 | 21°C (70°F) | 11°C (51°F) | 0" |
| 1974 | 16°C (60°F) | 6°C (42°F) | 0" |
| 1973 | 19°C (67°F) | 8°C (46°F) | 0" |
| 1972 | 16°C (60°F) | 4°C (40°F) | 0" |
| 1971 | 16°C (61°F) | 9°C (48°F) | 0.13" |