Weather on September 17 in Santiago
Historical weather data for September 17 in Santiago, Chile
Avg High21°C (70°F)
Avg Low6°C (43°F)
Warmest202519°C
Coldest200211°C
Based on 50 years of data from QUINTA NORMAL
About This Date
September 17th in Santiago, Chile typically brings pleasant fall weather, with average highs around 21°C and lows near 6°C — a 27°F daily swing. Over 50 years of records, the warmest September 17th was in 2025 (19°C average), while the coldest was 2002 (11°C) — a 15°F range across recorded history. Rain or other precipitation has occurred on about 16% of September 17th dates historically, with the wettest September 17th recording 1.5" of rain.
Planning for September 17th in Santiago? Great weather for outdoor activities.
Year by Year History
| Year | High | Low | Precip |
|---|---|---|---|
| 2025 | 26°C (79°F) | 13°C (55°F) | -- |
| 2024 | -- | 6°C (43°F) | 0" |
| 2023 | 22°C (71°F) | -- | 0" |
| 2022 | 25°C (77°F) | 9°C (49°F) | -- |
| 2021 | -- | 6°C (42°F) | 0" |
| 2020 | -- | 7°C (44°F) | 0" |
| 2019 | 21°C (69°F) | 5°C (41°F) | 0" |
| 2018 | 20°C (68°F) | -- | -- |
| 2017 | 32°C (89°F) | 7°C (44°F) | 0" |
| 2015 | -- | 9°C (49°F) | 0" |
| 2014 | 15°C (59°F) | 10°C (50°F) | 0.03" |
| 2013 | -- | -2°C (28°F) | 0.05" |
| 2012 | 18°C (64°F) | 8°C (46°F) | 0" |
| 2011 | -- | 5°C (41°F) | 0" |
| 2009 | 19°C (67°F) | -- | -- |
| 2008 | 26°C (79°F) | 9°C (49°F) | 0" |
| 2007 | 18°C (64°F) | 6°C (42°F) | -- |
| 2006 | -- | 7°C (44°F) | -- |
| 2005 | 22°C (72°F) | -- | -- |
| 2004 | 27°C (81°F) | 11°C (51°F) | 0" |
| 2003 | 26°C (78°F) | 8°C (46°F) | 0" |
| 2002 | 18°C (65°F) | 4°C (39°F) | 0.41" |
| 2001 | -- | 8°C (47°F) | 0.08" |
| 2000 | 19°C (67°F) | 7°C (45°F) | -- |
| 1999 | -- | 4°C (40°F) | 0" |
| 1998 | -- | 9°C (48°F) | 0" |
| 1997 | -- | 10°C (50°F) | 0" |
| 1996 | 26°C (78°F) | 9°C (48°F) | 0" |
| 1995 | 23°C (73°F) | 11°C (51°F) | 0" |
| 1994 | -- | 9°C (48°F) | 0" |
| 1993 | 18°C (64°F) | -- | 0" |
| 1992 | -- | 2°C (35°F) | 1.19" |
| 1991 | -- | 9°C (49°F) | 1.5" |
| 1990 | -- | 8°C (46°F) | 0" |
| 1989 | 19°C (66°F) | 11°C (51°F) | 0.03" |
| 1988 | -- | 2°C (36°F) | -- |
| 1987 | -- | 5°C (41°F) | 0" |
| 1986 | -- | -1°C (30°F) | -- |
| 1985 | 20°C (68°F) | -- | 0" |
| 1984 | 21°C (69°F) | 12°C (53°F) | -- |
| 1983 | 13°C (55°F) | -- | -- |
| 1981 | 21°C (70°F) | 5°C (41°F) | 0" |
| 1980 | 22°C (72°F) | 1°C (34°F) | 0" |
| 1979 | -- | -1°C (30°F) | 0" |
| 1978 | -- | 6°C (43°F) | 1.09" |
| 1977 | -- | 1°C (34°F) | 0" |
| 1976 | 26°C (79°F) | 4°C (39°F) | -- |
| 1975 | 15°C (59°F) | 9°C (48°F) | -- |
| 1974 | -- | 2°C (36°F) | 0" |
| 1973 | -- | 5°C (41°F) | 0" |