Weather on September 15 in Ljubljana
Historical weather data for September 15 in Ljubljana, Slovenia
Based on 54 years of data from LJUBLJANA BEZIGRAD
About This Date
September 15th in Ljubljana, Slovenia typically brings pleasant fall weather, with average highs around 22°C and lows near 12°C. Over 54 years of records, the warmest September 15th was in 1987 (22°C average), while the coldest was 1972 (9°C) — a 24°F range across recorded history. Rain or other precipitation has occurred on about 41% of September 15th dates historically, with the wettest September 15th recording 15.69" of rain. The last decade has been 6.4°F warmer on this date compared to 20-30 years ago.
The last decade has been 6.4°F warmer on this date compared to 20-30 years ago.
Planning for September 15th in Ljubljana? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Year by Year History
| Year | High | Low | Precip |
|---|---|---|---|
| 2024 | 18°C (65°F) | 11°C (51°F) | 0.1" |
| 2023 | 25°C (77°F) | 16°C (61°F) | 0" |
| 2022 | 24°C (75°F) | 16°C (61°F) | 15.69" |
| 2021 | 29°C (85°F) | 13°C (55°F) | 0" |
| 2020 | 29°C (84°F) | 14°C (58°F) | 0" |
| 2019 | 26°C (78°F) | 15°C (59°F) | 0" |
| 2018 | 24°C (75°F) | 17°C (62°F) | 0" |
| 2017 | 21°C (69°F) | 10°C (50°F) | 4.45" |
| 2016 | 27°C (81°F) | 16°C (60°F) | 0.03" |
| 2015 | 27°C (81°F) | 16°C (61°F) | 0" |
| 2014 | 22°C (71°F) | 13°C (55°F) | 0" |
| 2013 | 22°C (71°F) | 12°C (54°F) | 0.06" |
| 2012 | 21°C (70°F) | 11°C (52°F) | -- |
| 2011 | 26°C (78°F) | 18°C (64°F) | 0" |
| 2010 | 25°C (77°F) | 12°C (54°F) | 0" |
| 2009 | 22°C (71°F) | 13°C (56°F) | 0" |
| 2008 | 14°C (57°F) | 8°C (47°F) | 0.02" |
| 2007 | 26°C (78°F) | 13°C (55°F) | 0" |
| 2006 | 18°C (65°F) | 16°C (60°F) | 2.73" |
| 2005 | 26°C (78°F) | 13°C (55°F) | 0" |
| 2004 | 23°C (74°F) | 17°C (63°F) | 3.88" |
| 2003 | 21°C (70°F) | 8°C (47°F) | 0" |
| 2002 | 19°C (66°F) | 7°C (44°F) | 0" |
| 2001 | 13°C (56°F) | 9°C (48°F) | 0.07" |
| 2000 | 26°C (79°F) | 13°C (56°F) | 0" |
| 1999 | 27°C (81°F) | 12°C (53°F) | 0" |
| 1998 | 19°C (67°F) | 8°C (46°F) | 0" |
| 1997 | 19°C (67°F) | 9°C (48°F) | 0" |
| 1996 | 19°C (66°F) | 9°C (48°F) | 0.04" |
| 1995 | 22°C (71°F) | 13°C (56°F) | 0.24" |
| 1994 | 21°C (69°F) | 14°C (57°F) | 2.23" |
| 1993 | 22°C (72°F) | 11°C (51°F) | 0" |
| 1992 | 23°C (74°F) | 15°C (59°F) | 0" |
| 1991 | 22°C (72°F) | 16°C (61°F) | 0.22" |
| 1990 | 21°C (70°F) | 8°C (47°F) | 0.02" |
| 1989 | 22°C (71°F) | 10°C (50°F) | 0" |
| 1988 | 10°C (50°F) | 9°C (48°F) | 1.36" |
| 1987 | 29°C (85°F) | 16°C (60°F) | 0" |
| 1986 | 25°C (77°F) | 14°C (58°F) | 0" |
| 1985 | 23°C (74°F) | 8°C (47°F) | 0.01" |
| 1984 | 22°C (72°F) | 12°C (54°F) | 1.62" |
| 1983 | 24°C (75°F) | 9°C (49°F) | 0" |
| 1982 | 25°C (77°F) | 13°C (55°F) | 0" |
| 1981 | 21°C (70°F) | 8°C (47°F) | 0" |
| 1980 | 23°C (73°F) | 10°C (50°F) | 0" |
| 1979 | 21°C (70°F) | 12°C (53°F) | 0.49" |
| 1978 | 23°C (73°F) | 7°C (44°F) | 0" |
| 1977 | 24°C (75°F) | 3°C (37°F) | 0" |
| 1976 | 19°C (67°F) | 12°C (53°F) | 1.9" |
| 1975 | 23°C (74°F) | 13°C (55°F) | 0" |
| 1974 | 26°C (78°F) | 15°C (59°F) | 0" |
| 1973 | 17°C (63°F) | 9°C (48°F) | 0.01" |
| 1972 | 12°C (54°F) | 6°C (43°F) | 1.53" |
| 1971 | 15°C (59°F) | 7°C (44°F) | 0.39" |