Weather on October 21 in London
Historical weather data for October 21 in London, United Kingdom
Based on 55 years of data from HAMPSTEAD
About This Date
October 21st in London, United Kingdom typically brings cool fall weather, with average highs around 14°C and lows near 7°C. Over 55 years of records, the warmest October 21st was in 2006 (15°C average), while the coldest was 2003 (4°C) — a 19°F range across recorded history. Rain or other precipitation has occurred on about 55% of October 21st dates historically, with the wettest October 21st recording 3.55" of rain. The last decade has been 2.5°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.5°F warmer on this date compared to 20-30 years ago.
Planning for October 21st in London? Bring layers as temperatures can vary throughout the day. Consider bringing rain gear or an umbrella.
Year by Year History
| Year | High | Low | Precip (mm) |
|---|---|---|---|
| 2025 | 15°C (59°F) | 11°C (51°F) | 6 mm |
| 2024 | 16°C (60°F) | -- | 3 mm |
| 2023 | 18°C (64°F) | -- | 1 mm |
| 2022 | 18°C (65°F) | 9°C (49°F) | 30 mm |
| 2021 | 12°C (54°F) | -- | 51 mm |
| 2020 | 14°C (57°F) | 13°C (56°F) | 18 mm |
| 2019 | 14°C (57°F) | 8°C (47°F) | 1 mm |
| 2018 | 19°C (66°F) | -- | 0 mm |
| 2017 | 16°C (61°F) | -- | 5 mm |
| 2016 | 13°C (55°F) | 8°C (46°F) | 0 mm |
| 2015 | 13°C (56°F) | 8°C (46°F) | 9 mm |
| 2014 | 13°C (56°F) | 11°C (51°F) | 2 mm |
| 2013 | 17°C (63°F) | 11°C (52°F) | 3 mm |
| 2012 | 14°C (57°F) | 9°C (48°F) | 4 mm |
| 2011 | 14°C (58°F) | 4°C (40°F) | 0 mm |
| 2010 | 12°C (53°F) | -1°C (31°F) | 0 mm |
| 2009 | 16°C (61°F) | 8°C (47°F) | 1 mm |
| 2008 | 13°C (56°F) | 7°C (44°F) | 0 mm |
| 2007 | 14°C (58°F) | 4°C (39°F) | 0 mm |
| 2006 | 18°C (64°F) | 12°C (54°F) | 8 mm |
| 2005 | 17°C (62°F) | 11°C (52°F) | 1 mm |
| 2004 | 15°C (59°F) | 7°C (45°F) | 0 mm |
| 2003 | 8°C (47°F) | 1°C (34°F) | 11 mm |
| 2002 | 15°C (59°F) | 6°C (43°F) | 27 mm |
| 2001 | 16°C (61°F) | 9°C (49°F) | 90 mm |
| 2000 | 13°C (56°F) | 9°C (49°F) | 0 mm |
| 1999 | 16°C (60°F) | 7°C (45°F) | 17 mm |
| 1998 | 17°C (62°F) | 6°C (42°F) | 3 mm |
| 1997 | 13°C (55°F) | 7°C (45°F) | 0 mm |
| 1996 | 17°C (62°F) | 9°C (48°F) | -- |
| 1995 | 15°C (59°F) | 4°C (39°F) | 0 mm |
| 1994 | 16°C (61°F) | 12°C (53°F) | 13 mm |
| 1993 | 11°C (51°F) | 2°C (36°F) | 0 mm |
| 1992 | 9°C (49°F) | 4°C (40°F) | 0 mm |
| 1991 | 11°C (51°F) | 1°C (34°F) | 0 mm |
| 1990 | 13°C (55°F) | 13°C (55°F) | 0 mm |
| 1989 | 18°C (65°F) | 11°C (51°F) | 4 mm |
| 1988 | 17°C (62°F) | 7°C (45°F) | 0 mm |
| 1987 | 14°C (57°F) | 11°C (51°F) | 3 mm |
| 1986 | 13°C (55°F) | 6°C (42°F) | 51 mm |
| 1985 | 14°C (58°F) | 6°C (42°F) | 0 mm |
| 1984 | 16°C (60°F) | 5°C (41°F) | 24 mm |
| 1983 | 13°C (55°F) | 3°C (38°F) | 0 mm |
| 1982 | 9°C (49°F) | 8°C (46°F) | 66 mm |
| 1981 | 9°C (49°F) | 2°C (35°F) | 0 mm |
| 1980 | 14°C (57°F) | 7°C (44°F) | 2 mm |
| 1979 | 11°C (52°F) | 7°C (44°F) | 0 mm |
| 1978 | 16°C (61°F) | 6°C (43°F) | 0 mm |
| 1977 | 18°C (64°F) | 12°C (53°F) | 43 mm |
| 1976 | 13°C (55°F) | 6°C (43°F) | 9 mm |
| 1975 | 12°C (54°F) | 7°C (44°F) | 0 mm |
| 1974 | 9°C (49°F) | 3°C (37°F) | 1 mm |
| 1973 | 12°C (53°F) | 5°C (41°F) | 0 mm |
| 1972 | 13°C (56°F) | 1°C (33°F) | 0 mm |
| 1971 | 19°C (67°F) | 8°C (47°F) | 0 mm |