Weather on September 20 in Riga
Historical weather data for September 20 in Riga, Latvia
Based on 46 years of data from RIGA
About This Date
September 20th in Riga, Latvia typically brings mild fall weather, with average highs around 16°C and lows near 8°C. Over 46 years of records, the warmest September 20th was in 2025 (17°C average), while the coldest was 1995 (8°C) — a 17°F range across recorded history. Rain or other precipitation has occurred on about 37% of September 20th dates historically, with the wettest September 20th recording 0.93" of rain. The last decade has been 4.1°F warmer on this date compared to 20-30 years ago.
The last decade has been 4.1°F warmer on this date compared to 20-30 years ago.
Planning for September 20th in Riga? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Year by Year History
| Year | High | Low | Precip (mm) |
|---|---|---|---|
| 2025 | 19°C (67°F) | 15°C (59°F) | -- |
| 2024 | 18°C (65°F) | 12°C (54°F) | -- |
| 2023 | -- | 16°C (60°F) | 1 mm |
| 2022 | 15°C (59°F) | 8°C (47°F) | -- |
| 2017 | 18°C (64°F) | 7°C (44°F) | -- |
| 2016 | 17°C (62°F) | 11°C (51°F) | -- |
| 2015 | 21°C (69°F) | 6°C (43°F) | -- |
| 2014 | -- | 7°C (44°F) | -- |
| 2013 | -- | 11°C (51°F) | -- |
| 2012 | 14°C (58°F) | 9°C (49°F) | -- |
| 2011 | 17°C (63°F) | -- | 1 mm |
| 2010 | 16°C (60°F) | 11°C (51°F) | 13 mm |
| 2009 | 19°C (66°F) | 12°C (53°F) | -- |
| 2004 | 18°C (65°F) | 11°C (52°F) | -- |
| 2002 | 12°C (54°F) | 4°C (40°F) | 5 mm |
| 2001 | 15°C (59°F) | 12°C (54°F) | 3 mm |
| 2000 | 17°C (63°F) | 3°C (38°F) | -- |
| 1999 | 19°C (66°F) | 8°C (46°F) | 0 mm |
| 1998 | 16°C (61°F) | 9°C (48°F) | -- |
| 1997 | 13°C (55°F) | 4°C (40°F) | 13 mm |
| 1996 | 11°C (51°F) | -- | -- |
| 1995 | 15°C (59°F) | 1°C (33°F) | 0 mm |
| 1994 | 17°C (62°F) | 9°C (49°F) | 0 mm |
| 1993 | 12°C (54°F) | 4°C (39°F) | 13 mm |
| 1992 | -- | 9°C (49°F) | 0 mm |
| 1991 | 16°C (61°F) | 8°C (47°F) | 1 mm |
| 1990 | 14°C (57°F) | 9°C (49°F) | 22 mm |
| 1989 | 18°C (65°F) | 11°C (52°F) | 0 mm |
| 1988 | 18°C (64°F) | 9°C (48°F) | 0 mm |
| 1987 | 13°C (56°F) | 8°C (46°F) | 0 mm |
| 1986 | 16°C (60°F) | 8°C (46°F) | 0 mm |
| 1985 | 17°C (63°F) | 12°C (53°F) | 1 mm |
| 1984 | 16°C (60°F) | 9°C (48°F) | 17 mm |
| 1983 | 18°C (65°F) | 12°C (53°F) | 24 mm |
| 1982 | 22°C (72°F) | 10°C (50°F) | 0 mm |
| 1981 | 12°C (53°F) | 7°C (45°F) | 3 mm |
| 1980 | 18°C (65°F) | 6°C (42°F) | 0 mm |
| 1979 | 17°C (62°F) | 8°C (47°F) | 0 mm |
| 1978 | 11°C (51°F) | 7°C (45°F) | 13 mm |
| 1977 | 12°C (54°F) | 8°C (46°F) | 0 mm |
| 1976 | 16°C (60°F) | 3°C (38°F) | 0 mm |
| 1975 | 18°C (65°F) | 8°C (46°F) | 0 mm |
| 1974 | 14°C (57°F) | 5°C (41°F) | 0 mm |
| 1973 | 16°C (61°F) | 5°C (41°F) | 1 mm |
| 1972 | 16°C (60°F) | 8°C (47°F) | 8 mm |
| 1971 | 16°C (61°F) | 7°C (45°F) | 0 mm |