Weather on October 31 in Ottawa
Historical weather data for October 31 in Ottawa, Canada
Based on 55 years of data from OTTAWA CDA RCS
About This Date
October 31st in Ottawa, Canada typically brings cool fall weather, with average highs around 11°C and lows near 1°C. Over 55 years of records, the warmest October 31st was in 2024 (16°C average), while the coldest was 1988 (-1°C) — a 30°F range across recorded history. Precipitation has occurred on 38% of recorded October 31st dates, with snow falling 4% of the time (heaviest snowfall: 1.5"). The last decade has been 1.7°F cooler on this date compared to 20-30 years ago.
The last decade has been 1.7°F cooler on this date compared to 20-30 years ago.
Planning for October 31st 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 | 8°C (46°F) | 3°C (38°F) | -- |
| 2024 | 23°C (74°F) | 8°C (46°F) | 0 mm |
| 2023 | 4°C (39°F) | -3°C (27°F) | 0 mm |
| 2022 | 14°C (57°F) | 2°C (36°F) | 2 mm |
| 2021 | 12°C (53°F) | 8°C (46°F) | 12 mm |
| 2020 | 6°C (43°F) | -5°C (23°F) | 0 mm |
| 2019 | 9°C (49°F) | 7°C (44°F) | 97 mm |
| 2018 | 5°C (41°F) | -1°C (30°F) | 24 mm |
| 2017 | 10°C (50°F) | 5°C (41°F) | 0 mm |
| 2016 | 4°C (40°F) | -3°C (27°F) | 0 mm |
| 2015 | 7°C (44°F) | -4°C (24°F) | 0 mm |
| 2014 | 7°C (44°F) | -1°C (30°F) | 0 mm |
| 2013 | 15°C (59°F) | -1°C (31°F) | 32 mm |
| 2012 | 13°C (55°F) | 8°C (47°F) | 11 mm |
| 2011 | 11°C (52°F) | -2°C (29°F) | 0 mm |
| 2010 | 2°C (35°F) | 1°C (33°F) | 0 mm |
| 2009 | 14°C (58°F) | 6°C (42°F) | 20 mm |
| 2008 | 16°C (60°F) | -3°C (27°F) | 0 mm |
| 2007 | 17°C (62°F) | 1°C (34°F) | -- |
| 2006 | 7°C (44°F) | 0°C (32°F) | 0 mm |
| 2005 | 13°C (56°F) | 6°C (42°F) | 0 mm |
| 2004 | 14°C (57°F) | 7°C (44°F) | 6 mm |
| 2003 | 21°C (69°F) | 4°C (40°F) | 0 mm |
| 2002 | 4°C (40°F) | -4°C (24°F) | 0 mm |
| 2001 | 3°C (37°F) | -4°C (24°F) | 23 mm |
| 2000 | 11°C (51°F) | -2°C (29°F) | 0 mm |
| 1999 | 19°C (67°F) | 7°C (44°F) | 1 mm |
| 1998 | 12°C (54°F) | 2°C (35°F) | 0 mm |
| 1997 | 16°C (60°F) | 1°C (34°F) | 2 mm |
| 1996 | 7°C (44°F) | 2°C (35°F) | 0 mm |
| 1995 | 2°C (36°F) | -3°C (27°F) | 1 mm |
| 1994 | 12°C (54°F) | 2°C (35°F) | 10 mm |
| 1993 | 4°C (40°F) | 1°C (34°F) | 9 mm |
| 1992 | 4°C (40°F) | -6°C (22°F) | 0 mm |
| 1991 | 11°C (51°F) | 1°C (33°F) | 0 mm |
| 1990 | 12°C (53°F) | -3°C (26°F) | 0 mm |
| 1989 | 22°C (71°F) | 7°C (44°F) | 24 mm |
| 1988 | 6°C (42°F) | -7°C (19°F) | 0 mm |
| 1987 | 8°C (47°F) | 3°C (38°F) | 0 mm |
| 1986 | 8°C (47°F) | -6°C (22°F) | 0 mm |
| 1985 | 11°C (51°F) | -2°C (29°F) | 0 mm |
| 1984 | 6°C (43°F) | 1°C (33°F) | 0 mm |
| 1983 | 13°C (55°F) | -2°C (28°F) | 0 mm |
| 1982 | 17°C (63°F) | 8°C (46°F) | 3 mm |
| 1981 | 11°C (52°F) | -1°C (31°F) | 0 mm |
| 1980 | 11°C (52°F) | 3°C (37°F) | 1 mm |
| 1979 | 12°C (53°F) | -1°C (30°F) | 0 mm |
| 1978 | 16°C (60°F) | 4°C (39°F) | 0 mm |
| 1977 | 13°C (55°F) | -1°C (31°F) | 0 mm |
| 1976 | 6°C (42°F) | 2°C (35°F) | 21 mm |
| 1975 | 5°C (41°F) | -5°C (23°F) | 11 mm |
| 1974 | 19°C (67°F) | 10°C (50°F) | 6 mm |
| 1973 | 11°C (52°F) | 7°C (45°F) | 21 mm |
| 1972 | 3°C (38°F) | -3°C (26°F) | 0 mm |
| 1971 | 18°C (65°F) | 1°C (34°F) | 0 mm |