Weather on October 20 in Ottawa
Historical weather data for October 20 in Ottawa, Canada
Based on 54 years of data from OTTAWA CDA
About This Date
October 20th in Ottawa, Canada typically brings cool fall weather, with average highs around 13°C and lows near 3°C. Over 54 years of records, the warmest October 20th was in 2025 (16°C average), while the coldest was 1972 (-1°C) — a 30°F range across recorded history. Precipitation has occurred on 56% of recorded October 20th dates, with snow falling 4% of the time. The last decade has been 5.2°F warmer on this date compared to 20-30 years ago.
The last decade has been 5.2°F warmer on this date compared to 20-30 years ago.
Planning for October 20th in Ottawa? 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 | 22°C (71°F) | 11°C (52°F) | -- |
| 2023 | 19°C (67°F) | 10°C (50°F) | 24 mm |
| 2022 | 7°C (45°F) | -1°C (31°F) | 0 mm |
| 2021 | 20°C (68°F) | 6°C (43°F) | 7 mm |
| 2020 | 9°C (48°F) | 4°C (39°F) | 17 mm |
| 2019 | 15°C (59°F) | 0°C (32°F) | 0 mm |
| 2018 | 12°C (54°F) | 8°C (47°F) | 0 mm |
| 2017 | 19°C (66°F) | 8°C (46°F) | 0 mm |
| 2016 | 12°C (54°F) | 5°C (41°F) | 43 mm |
| 2015 | 17°C (63°F) | 7°C (45°F) | 0 mm |
| 2014 | 7°C (44°F) | -2°C (29°F) | 16 mm |
| 2013 | 13°C (55°F) | 5°C (41°F) | 2 mm |
| 2012 | 16°C (60°F) | 11°C (51°F) | 0 mm |
| 2011 | 14°C (57°F) | 8°C (47°F) | 74 mm |
| 2010 | 15°C (59°F) | 0°C (32°F) | 15 mm |
| 2009 | 17°C (62°F) | 7°C (44°F) | 0 mm |
| 2008 | 13°C (55°F) | 3°C (38°F) | 34 mm |
| 2007 | 18°C (64°F) | 11°C (52°F) | 0 mm |
| 2006 | 7°C (44°F) | 3°C (38°F) | 30 mm |
| 2005 | 10°C (50°F) | 2°C (35°F) | 0 mm |
| 2004 | 12°C (54°F) | 0°C (32°F) | 10 mm |
| 2003 | 8°C (46°F) | -2°C (29°F) | 90 mm |
| 2002 | 9°C (48°F) | 3°C (37°F) | 2 mm |
| 2001 | 17°C (62°F) | 9°C (48°F) | 2 mm |
| 2000 | 19°C (66°F) | 1°C (34°F) | 0 mm |
| 1999 | 15°C (59°F) | 2°C (36°F) | 1 mm |
| 1998 | 12°C (54°F) | 7°C (44°F) | 0 mm |
| 1997 | 13°C (55°F) | -1°C (31°F) | 1 mm |
| 1996 | 9°C (48°F) | 7°C (44°F) | 67 mm |
| 1995 | 23°C (73°F) | 6°C (42°F) | 15 mm |
| 1994 | 18°C (65°F) | 11°C (52°F) | 11 mm |
| 1993 | 13°C (55°F) | 2°C (36°F) | 61 mm |
| 1992 | 3°C (38°F) | -2°C (28°F) | 7 mm |
| 1991 | 8°C (47°F) | -2°C (28°F) | 0 mm |
| 1990 | 8°C (47°F) | -3°C (27°F) | 0 mm |
| 1989 | 8°C (47°F) | 3°C (37°F) | 98 mm |
| 1988 | 9°C (48°F) | -4°C (24°F) | 0 mm |
| 1987 | 12°C (53°F) | 8°C (47°F) | 14 mm |
| 1986 | 14°C (58°F) | 2°C (36°F) | 8 mm |
| 1985 | 12°C (54°F) | 3°C (37°F) | 0 mm |
| 1984 | 17°C (62°F) | 7°C (44°F) | 0 mm |
| 1983 | 8°C (46°F) | -2°C (28°F) | 0 mm |
| 1982 | 19°C (66°F) | 6°C (42°F) | 4 mm |
| 1981 | 13°C (55°F) | -2°C (29°F) | 0 mm |
| 1980 | 6°C (43°F) | 2°C (36°F) | 2 mm |
| 1979 | 21°C (69°F) | 9°C (48°F) | 50 mm |
| 1978 | 11°C (52°F) | -1°C (31°F) | 0 mm |
| 1977 | 14°C (57°F) | 4°C (39°F) | 0 mm |
| 1976 | 5°C (41°F) | -1°C (31°F) | 72 mm |
| 1975 | 13°C (55°F) | 7°C (44°F) | 3 mm |
| 1974 | 3°C (37°F) | -3°C (27°F) | 0 mm |
| 1973 | 8°C (47°F) | 5°C (41°F) | 1 mm |
| 1972 | 6°C (43°F) | -7°C (19°F) | 0 mm |
| 1971 | 21°C (69°F) | 3°C (37°F) | 0 mm |