Weather on November 21 in Ottawa
Historical weather data for November 21 in Ottawa, Canada
Based on 54 years of data from OTTAWA CDA
About This Date
November 21st in Ottawa, Canada typically brings cold fall weather, with average highs around 3°C and lows near -3°C. Over 54 years of records, the warmest November 21st was in 1982 (8°C average), while the coldest was 1987 (-12°C) — a 36°F range across recorded history. Precipitation has occurred on 48% of recorded November 21st dates, with snow falling 13% of the time (heaviest snowfall: 2.4"). The last decade has been 7.1°F cooler on this date compared to 20-30 years ago.
The last decade has been 7.1°F cooler on this date compared to 20-30 years ago.
Planning for November 21st in Ottawa? Bundle up with warm layers and protect extremities from the cold. Consider bringing rain gear or an umbrella.
Year by Year History
| Year | High | Low | Precip (mm) |
|---|---|---|---|
| 2025 | 4°C (40°F) | -4°C (25°F) | -- |
| 2023 | 0°C (32°F) | -7°C (19°F) | 6 mm |
| 2022 | 4°C (39°F) | -12°C (10°F) | 1 mm |
| 2021 | 6°C (42°F) | 1°C (34°F) | 1 mm |
| 2020 | 5°C (41°F) | 2°C (36°F) | 0 mm |
| 2019 | 3°C (38°F) | -5°C (23°F) | 0 mm |
| 2018 | -3°C (26°F) | -17°C (2°F) | 1 mm |
| 2017 | 8°C (47°F) | -6°C (22°F) | 3 mm |
| 2016 | -2°C (29°F) | -4°C (25°F) | 2 mm |
| 2015 | 7°C (45°F) | -2°C (28°F) | 0 mm |
| 2014 | -2°C (28°F) | -9°C (15°F) | 0 mm |
| 2013 | 4°C (39°F) | -7°C (20°F) | 1 mm |
| 2012 | 10°C (50°F) | -3°C (26°F) | 0 mm |
| 2011 | 1°C (33°F) | -7°C (20°F) | 0 mm |
| 2010 | 0°C (32°F) | -6°C (21°F) | 1 mm |
| 2009 | 9°C (49°F) | 4°C (40°F) | 0 mm |
| 2008 | -5°C (23°F) | -10°C (14°F) | 0 mm |
| 2007 | 3°C (38°F) | 0°C (32°F) | 0 mm |
| 2006 | 3°C (37°F) | -5°C (23°F) | 0 mm |
| 2005 | 7°C (45°F) | 4°C (39°F) | 0 mm |
| 2004 | 9°C (48°F) | 1°C (33°F) | 1 mm |
| 2003 | 11°C (51°F) | -2°C (29°F) | 0 mm |
| 2002 | 7°C (44°F) | 2°C (35°F) | 0 mm |
| 2001 | 7°C (44°F) | -2°C (28°F) | 0 mm |
| 2000 | 2°C (35°F) | -3°C (26°F) | 1 mm |
| 1999 | 9°C (49°F) | 4°C (39°F) | 0 mm |
| 1998 | 2°C (36°F) | -1°C (31°F) | 0 mm |
| 1997 | 3°C (37°F) | 1°C (33°F) | 0 mm |
| 1996 | -1°C (31°F) | -4°C (24°F) | 0 mm |
| 1995 | 3°C (38°F) | 0°C (32°F) | 1 mm |
| 1994 | 11°C (51°F) | 0°C (32°F) | 10 mm |
| 1993 | 8°C (46°F) | -7°C (19°F) | 1 mm |
| 1992 | 12°C (54°F) | -2°C (29°F) | 0 mm |
| 1991 | 7°C (45°F) | 3°C (37°F) | 0 mm |
| 1990 | 1°C (34°F) | -1°C (31°F) | 2 mm |
| 1989 | -6°C (21°F) | -10°C (14°F) | 0 mm |
| 1988 | 2°C (35°F) | 0°C (32°F) | 1 mm |
| 1987 | -9°C (15°F) | -15°C (5°F) | 0 mm |
| 1986 | -2°C (28°F) | -7°C (19°F) | 1 mm |
| 1985 | 2°C (36°F) | 1°C (34°F) | 0 mm |
| 1984 | -2°C (29°F) | -6°C (22°F) | 0 mm |
| 1983 | 8°C (46°F) | -2°C (28°F) | 0 mm |
| 1982 | 11°C (52°F) | 4°C (40°F) | 11 mm |
| 1981 | 2°C (36°F) | 0°C (32°F) | 1 mm |
| 1980 | 4°C (39°F) | -2°C (28°F) | 0 mm |
| 1979 | 6°C (43°F) | 3°C (37°F) | 4 mm |
| 1978 | -6°C (22°F) | -12°C (10°F) | 0 mm |
| 1977 | 9°C (48°F) | 1°C (33°F) | 1 mm |
| 1976 | -2°C (28°F) | -7°C (19°F) | 0 mm |
| 1975 | 4°C (39°F) | 0°C (32°F) | 10 mm |
| 1974 | 1°C (33°F) | -3°C (27°F) | 1 mm |
| 1973 | 1°C (34°F) | -6°C (21°F) | 6 mm |
| 1972 | -4°C (25°F) | -8°C (17°F) | 0 mm |
| 1971 | 1°C (34°F) | 0°C (32°F) | 5 mm |