Weather on September 21 in Ljubljana
Historical weather data for September 21 in Ljubljana, Slovenia
Based on 54 years of data from LJUBLJANA BEZIGRAD
About This Date
September 21st in Ljubljana, Slovenia typically brings pleasant fall weather, with average highs around 21°C and lows near 11°C. Over 54 years of records, the warmest September 21st was in 1981 (22°C average), while the coldest was 1978 (9°C) — a 23°F range across recorded history. Rain or other precipitation has occurred on about 31% of September 21st dates historically, with the wettest September 21st recording 3.51" of rain. Temperatures on this date have remained relatively stable over the past several decades.
Temperatures on this date have remained relatively stable over the past several decades.
Planning for September 21st in Ljubljana? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Year by Year History
| Year | High | Low | Precip |
|---|---|---|---|
| 2024 | 23°C (74°F) | 12°C (53°F) | 0" |
| 2023 | 25°C (77°F) | 16°C (61°F) | 0.2" |
| 2022 | 18°C (64°F) | 7°C (45°F) | 0" |
| 2021 | 18°C (65°F) | 9°C (49°F) | 0" |
| 2020 | 23°C (73°F) | 12°C (53°F) | 0.03" |
| 2019 | 19°C (67°F) | 5°C (41°F) | 0" |
| 2018 | 28°C (83°F) | 16°C (60°F) | 0" |
| 2017 | 21°C (69°F) | 5°C (41°F) | 0" |
| 2016 | 18°C (65°F) | 12°C (54°F) | 0" |
| 2015 | 21°C (69°F) | 9°C (49°F) | 0" |
| 2014 | 27°C (81°F) | 16°C (60°F) | 0.29" |
| 2013 | 22°C (71°F) | 11°C (51°F) | 0" |
| 2012 | 21°C (69°F) | 6°C (42°F) | -- |
| 2011 | 24°C (75°F) | 14°C (58°F) | 0" |
| 2010 | 21°C (70°F) | 8°C (47°F) | 0" |
| 2009 | 25°C (77°F) | 13°C (56°F) | 0" |
| 2008 | 16°C (60°F) | 8°C (46°F) | 0" |
| 2007 | 19°C (66°F) | 5°C (41°F) | 0" |
| 2006 | 24°C (75°F) | 12°C (53°F) | 0" |
| 2005 | 13°C (55°F) | 11°C (51°F) | 0.01" |
| 2004 | 23°C (74°F) | 12°C (53°F) | 0.12" |
| 2003 | 29°C (85°F) | 13°C (55°F) | 0" |
| 2002 | 19°C (66°F) | 13°C (56°F) | 1.16" |
| 2001 | 21°C (70°F) | 7°C (44°F) | 0" |
| 2000 | 22°C (71°F) | 15°C (59°F) | 0.15" |
| 1999 | 24°C (75°F) | 16°C (61°F) | 0" |
| 1998 | 21°C (69°F) | 11°C (51°F) | 0" |
| 1997 | 18°C (65°F) | 7°C (45°F) | 0" |
| 1996 | 14°C (57°F) | 11°C (52°F) | 3.51" |
| 1995 | 23°C (73°F) | 11°C (52°F) | 3.24" |
| 1994 | 20°C (68°F) | 6°C (43°F) | 0.02" |
| 1993 | 21°C (69°F) | 14°C (58°F) | 0" |
| 1992 | 23°C (73°F) | 8°C (46°F) | 0" |
| 1991 | 22°C (71°F) | 12°C (54°F) | 0" |
| 1990 | 16°C (60°F) | 13°C (55°F) | 0.27" |
| 1989 | 26°C (78°F) | 14°C (57°F) | 0" |
| 1988 | 18°C (64°F) | 8°C (47°F) | 0" |
| 1987 | 27°C (81°F) | 15°C (59°F) | 0" |
| 1986 | 21°C (70°F) | 3°C (38°F) | 0" |
| 1985 | 28°C (82°F) | 12°C (53°F) | 0" |
| 1984 | 17°C (62°F) | 14°C (58°F) | 1.38" |
| 1983 | 24°C (75°F) | 13°C (55°F) | 0" |
| 1982 | 23°C (74°F) | 13°C (56°F) | 0.7" |
| 1981 | 26°C (79°F) | 18°C (65°F) | 0" |
| 1980 | 24°C (76°F) | 12°C (53°F) | 0" |
| 1979 | 21°C (70°F) | 12°C (54°F) | 1.18" |
| 1978 | 16°C (61°F) | 2°C (36°F) | 0" |
| 1977 | 16°C (60°F) | 7°C (45°F) | 0.04" |
| 1976 | 18°C (65°F) | 8°C (46°F) | 0" |
| 1975 | 24°C (76°F) | 11°C (51°F) | 0" |
| 1974 | 15°C (59°F) | 12°C (54°F) | 0.06" |
| 1973 | 24°C (75°F) | 13°C (56°F) | 2.7" |
| 1972 | 19°C (66°F) | 8°C (46°F) | 0" |
| 1971 | 23°C (73°F) | 7°C (45°F) | 0" |