Weather on September 17 in Ljubljana
Historical weather data for September 17 in Ljubljana, Slovenia
Based on 54 years of data from LJUBLJANA BEZIGRAD
About This Date
September 17th in Ljubljana, Slovenia typically brings pleasant fall weather, with average highs around 21°C and lows near 12°C. Over 54 years of records, the warmest September 17th was in 2015 (23°C average), while the coldest was 1971 (7°C) — a 29°F range across recorded history. Rain or other precipitation has occurred on about 44% of September 17th dates historically, with the wettest September 17th recording 13.96" of rain. The last decade has been 5.6°F warmer on this date compared to 20-30 years ago.
The last decade has been 5.6°F warmer on this date compared to 20-30 years ago.
Planning for September 17th in Ljubljana? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Year by Year History
| Year | High | Low | Precip |
|---|---|---|---|
| 2024 | 16°C (60°F) | 10°C (50°F) | 0.53" |
| 2023 | 27°C (80°F) | 14°C (57°F) | 0" |
| 2022 | 13°C (56°F) | 9°C (49°F) | 1.33" |
| 2021 | 20°C (68°F) | 16°C (60°F) | 1.51" |
| 2020 | 27°C (81°F) | 14°C (58°F) | 0" |
| 2019 | 27°C (81°F) | 16°C (60°F) | 1.13" |
| 2018 | 28°C (82°F) | 14°C (58°F) | 0" |
| 2017 | 20°C (68°F) | 12°C (54°F) | 1.06" |
| 2016 | 21°C (70°F) | 16°C (61°F) | 0.02" |
| 2015 | 29°C (84°F) | 18°C (64°F) | 0" |
| 2014 | 21°C (69°F) | 12°C (53°F) | 0" |
| 2013 | 18°C (64°F) | 9°C (48°F) | 1.78" |
| 2012 | -- | 8°C (46°F) | -- |
| 2011 | 29°C (84°F) | 13°C (56°F) | 0.02" |
| 2010 | 17°C (63°F) | 14°C (57°F) | 13.96" |
| 2009 | 23°C (73°F) | 16°C (61°F) | 0" |
| 2008 | 17°C (62°F) | 6°C (42°F) | 0" |
| 2007 | 23°C (74°F) | 13°C (56°F) | 1.52" |
| 2006 | 21°C (69°F) | 15°C (59°F) | 6.82" |
| 2005 | 19°C (66°F) | 13°C (55°F) | 4.18" |
| 2004 | 19°C (66°F) | 12°C (54°F) | 0" |
| 2003 | 24°C (76°F) | 8°C (46°F) | 0" |
| 2002 | 22°C (72°F) | 9°C (49°F) | 0" |
| 2001 | 11°C (52°F) | 8°C (47°F) | 0.7" |
| 2000 | 22°C (71°F) | 13°C (55°F) | 0.02" |
| 1999 | 26°C (79°F) | 12°C (54°F) | 0" |
| 1998 | 16°C (60°F) | 11°C (51°F) | 0.74" |
| 1997 | 21°C (70°F) | 6°C (43°F) | 0" |
| 1996 | 13°C (56°F) | 9°C (49°F) | 0.11" |
| 1995 | 21°C (69°F) | 11°C (52°F) | 0" |
| 1994 | 15°C (59°F) | 11°C (52°F) | 0.35" |
| 1993 | 17°C (63°F) | 14°C (58°F) | 1.22" |
| 1992 | 26°C (78°F) | 12°C (53°F) | 0" |
| 1991 | 25°C (77°F) | 13°C (56°F) | 0" |
| 1990 | 19°C (66°F) | 9°C (48°F) | 0.01" |
| 1989 | 24°C (76°F) | 13°C (55°F) | 0" |
| 1988 | 19°C (66°F) | 6°C (42°F) | 0" |
| 1987 | 29°C (84°F) | 17°C (62°F) | 0.12" |
| 1986 | 28°C (82°F) | 18°C (64°F) | 0" |
| 1985 | 24°C (76°F) | 10°C (50°F) | 0" |
| 1984 | 18°C (64°F) | 12°C (54°F) | 0.05" |
| 1983 | 18°C (64°F) | 8°C (47°F) | 1.1" |
| 1982 | 25°C (77°F) | 14°C (57°F) | 0" |
| 1981 | 23°C (74°F) | 11°C (52°F) | 0" |
| 1980 | 22°C (71°F) | 14°C (57°F) | 0" |
| 1979 | 20°C (68°F) | 3°C (37°F) | 0" |
| 1978 | 25°C (77°F) | 11°C (52°F) | 0" |
| 1977 | 12°C (54°F) | 6°C (43°F) | 3.18" |
| 1976 | 20°C (68°F) | 9°C (49°F) | 0" |
| 1975 | 30°C (86°F) | 15°C (59°F) | 0" |
| 1974 | 26°C (78°F) | 13°C (55°F) | 0" |
| 1973 | 22°C (71°F) | 15°C (59°F) | 0" |
| 1972 | 11°C (51°F) | 8°C (46°F) | 0.07" |
| 1971 | 14°C (57°F) | 1°C (34°F) | 0" |