Weather on September 20 in Santiago
Historical weather data for September 20 in Santiago, Chile
Avg High19°C (67°F)
Avg Low6°C (43°F)
Warmest202518°C
Coldest19909°C
Based on 47 years of data from QUINTA NORMAL
About This Date
September 20th in Santiago, Chile typically brings mild fall weather, with average highs around 19°C and lows near 6°C. Over 47 years of records, the warmest September 20th was in 2025 (18°C average), while the coldest was 1990 (9°C) — a 17°F range across recorded history. Rain or other precipitation has occurred on about 9% of September 20th dates historically, with the wettest September 20th recording 0.51" of rain.
Planning for September 20th in Santiago? Great weather for outdoor activities.
Year by Year History
| Year | High | Low | Precip (mm) |
|---|---|---|---|
| 2025 | 25°C (77°F) | 12°C (54°F) | -- |
| 2024 | -- | 6°C (42°F) | 0 mm |
| 2023 | -- | 8°C (46°F) | -- |
| 2022 | 17°C (63°F) | 7°C (45°F) | 0 mm |
| 2021 | -- | 6°C (43°F) | 0 mm |
| 2020 | 28°C (83°F) | 7°C (44°F) | 0 mm |
| 2019 | -- | 2°C (36°F) | 0 mm |
| 2018 | -- | 8°C (47°F) | 0 mm |
| 2017 | -- | 9°C (48°F) | 0 mm |
| 2015 | -- | 12°C (53°F) | 0 mm |
| 2014 | -- | 6°C (43°F) | 0 mm |
| 2013 | 19°C (67°F) | 8°C (47°F) | 0 mm |
| 2012 | -- | 7°C (44°F) | 0 mm |
| 2011 | -- | 7°C (45°F) | 0 mm |
| 2008 | -- | 7°C (44°F) | 0 mm |
| 2007 | 18°C (64°F) | 6°C (43°F) | -- |
| 2006 | -- | 6°C (42°F) | 0 mm |
| 2005 | 21°C (70°F) | 8°C (46°F) | 0 mm |
| 2004 | -- | 3°C (38°F) | 0 mm |
| 2003 | -- | 7°C (45°F) | 0 mm |
| 2001 | -- | 6°C (42°F) | -- |
| 2000 | 18°C (65°F) | -- | 13 mm |
| 1999 | 24°C (76°F) | 7°C (44°F) | -- |
| 1998 | -- | 2°C (35°F) | 0 mm |
| 1997 | -- | 5°C (41°F) | 3 mm |
| 1996 | 21°C (70°F) | 3°C (38°F) | 0 mm |
| 1995 | -- | -1°C (31°F) | 0 mm |
| 1994 | 17°C (63°F) | 12°C (53°F) | -- |
| 1993 | 17°C (63°F) | 7°C (44°F) | 0 mm |
| 1991 | 21°C (69°F) | 7°C (45°F) | 0 mm |
| 1990 | 16°C (60°F) | 3°C (37°F) | 0 mm |
| 1989 | -- | 9°C (48°F) | 1 mm |
| 1988 | 18°C (64°F) | 1°C (34°F) | -- |
| 1987 | 21°C (70°F) | 9°C (49°F) | -- |
| 1986 | 21°C (70°F) | -- | 0 mm |
| 1984 | 13°C (56°F) | -- | 10 mm |
| 1983 | 22°C (71°F) | 4°C (40°F) | 0 mm |
| 1982 | -- | 3°C (38°F) | 0 mm |
| 1981 | -- | 0°C (32°F) | 0 mm |
| 1980 | 17°C (63°F) | 3°C (37°F) | 0 mm |
| 1979 | -- | 9°C (48°F) | 0 mm |
| 1978 | 18°C (64°F) | 5°C (41°F) | 0 mm |
| 1977 | -- | 2°C (36°F) | 0 mm |
| 1976 | 15°C (59°F) | 10°C (50°F) | -- |
| 1975 | 19°C (66°F) | 7°C (45°F) | 0 mm |
| 1974 | -- | 7°C (45°F) | 0 mm |
| 1973 | -- | 4°C (39°F) | 0 mm |