Weather on September 20 in Oslo
Historical weather data for September 20 in Oslo, Norway
Based on 55 years of data from OSLO - BLINDERN PLU
About This Date
September 20th in Oslo, Norway typically brings cool fall weather, with average highs around 15°C and lows near 7°C. Over 55 years of records, the warmest September 20th was in 2016 (16°C average), while the coldest was 1978 (6°C) — a 19°F range across recorded history. Rain or other precipitation has occurred on about 51% of September 20th dates historically, with the wettest September 20th recording 3.63" of rain. The last decade has been 1.3°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.3°F warmer on this date compared to 20-30 years ago.
Planning for September 20th in Oslo? Bring layers as temperatures can vary throughout the day. Consider bringing rain gear or an umbrella.
Year by Year History
| Year | High | Low | Precip |
|---|---|---|---|
| 2025 | 17°C (62°F) | 12°C (54°F) | 0.99" |
| 2024 | 15°C (59°F) | 8°C (47°F) | 0" |
| 2023 | 14°C (57°F) | 8°C (46°F) | 0.3" |
| 2022 | 16°C (60°F) | 5°C (41°F) | 0" |
| 2021 | 11°C (51°F) | 8°C (47°F) | 0.36" |
| 2020 | 18°C (64°F) | 8°C (46°F) | 0" |
| 2019 | 20°C (68°F) | 7°C (44°F) | 0.02" |
| 2018 | 18°C (64°F) | 12°C (53°F) | 0.26" |
| 2017 | 13°C (55°F) | 8°C (46°F) | 0.31" |
| 2016 | 23°C (73°F) | 9°C (48°F) | 0" |
| 2015 | 16°C (60°F) | 7°C (44°F) | 0.07" |
| 2014 | 17°C (62°F) | 7°C (45°F) | 0.4" |
| 2013 | 14°C (58°F) | 4°C (40°F) | 0" |
| 2012 | 14°C (58°F) | 3°C (37°F) | 0.02" |
| 2011 | 16°C (61°F) | 9°C (49°F) | 0.01" |
| 2010 | 13°C (55°F) | 6°C (42°F) | 1.47" |
| 2009 | 14°C (57°F) | 11°C (51°F) | 0.25" |
| 2008 | 14°C (57°F) | 7°C (44°F) | 0" |
| 2007 | 12°C (53°F) | 6°C (42°F) | 0" |
| 2006 | 19°C (67°F) | 11°C (52°F) | 0.21" |
| 2005 | 18°C (65°F) | 12°C (54°F) | 0.1" |
| 2004 | 13°C (55°F) | 10°C (50°F) | 1.94" |
| 2003 | 13°C (55°F) | 3°C (38°F) | 0.43" |
| 2002 | 15°C (59°F) | 6°C (42°F) | 0" |
| 2001 | 16°C (60°F) | 11°C (51°F) | 0" |
| 2000 | 14°C (58°F) | 7°C (45°F) | 0" |
| 1999 | 16°C (60°F) | 12°C (53°F) | 0" |
| 1998 | 18°C (64°F) | 9°C (48°F) | 0" |
| 1997 | 16°C (61°F) | 3°C (38°F) | 0.04" |
| 1996 | 13°C (56°F) | 8°C (46°F) | 0" |
| 1995 | 15°C (59°F) | 4°C (39°F) | 0" |
| 1994 | 13°C (55°F) | 3°C (38°F) | 0" |
| 1993 | 11°C (52°F) | 3°C (38°F) | 0.41" |
| 1992 | 17°C (62°F) | 7°C (44°F) | 0" |
| 1991 | 18°C (65°F) | 6°C (42°F) | 0" |
| 1990 | 14°C (58°F) | 6°C (42°F) | 0" |
| 1989 | 16°C (61°F) | 7°C (44°F) | 0" |
| 1988 | 20°C (68°F) | 9°C (49°F) | 0" |
| 1987 | 14°C (58°F) | 2°C (35°F) | 0" |
| 1986 | 14°C (58°F) | 5°C (41°F) | 0" |
| 1985 | 14°C (58°F) | 3°C (38°F) | 0.01" |
| 1984 | 13°C (56°F) | 4°C (39°F) | 0" |
| 1983 | 16°C (61°F) | 12°C (53°F) | 0.09" |
| 1982 | 16°C (60°F) | 13°C (55°F) | 3.63" |
| 1981 | 11°C (51°F) | 8°C (47°F) | 0.96" |
| 1980 | 12°C (54°F) | 12°C (53°F) | 0.83" |
| 1979 | 12°C (54°F) | 4°C (40°F) | 1.2" |
| 1978 | 11°C (51°F) | 1°C (33°F) | 0.09" |
| 1977 | 18°C (65°F) | 7°C (44°F) | 0" |
| 1976 | 14°C (58°F) | 9°C (49°F) | 0" |
| 1975 | 14°C (57°F) | 10°C (50°F) | 0.34" |
| 1974 | 16°C (60°F) | 4°C (40°F) | 0" |
| 1973 | 11°C (51°F) | 8°C (46°F) | 0.51" |
| 1972 | 11°C (52°F) | 7°C (44°F) | 0" |
| 1971 | 18°C (64°F) | 9°C (48°F) | 0.02" |