Weather on October 15 in Ottawa
Historical weather data for October 15 in Ottawa, Canada
Based on 55 years of data from OTTAWA CDA
About This Date
October 15th in Ottawa, Canada typically brings cool fall weather, with average highs around 13°C and lows near 5°C. Over 55 years of records, the warmest October 15th was in 2014 (19°C average), while the coldest was 2009 (1°C) — a 34°F range across recorded history. Rain or other precipitation has occurred on about 45% of October 15th dates historically, with the wettest October 15th recording 3.28" of rain. The last decade has been 4.5°F warmer on this date compared to 20-30 years ago.
The last decade has been 4.5°F warmer on this date compared to 20-30 years ago.
Planning for October 15th 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 |
|---|---|---|---|
| 2025 | 16°C (61°F) | 7°C (45°F) | -- |
| 2024 | 11°C (52°F) | 4°C (40°F) | 0" |
| 2023 | 12°C (53°F) | 6°C (43°F) | 0.04" |
| 2022 | 18°C (64°F) | 3°C (37°F) | 0" |
| 2021 | 21°C (69°F) | 16°C (61°F) | 0.41" |
| 2020 | 18°C (64°F) | 9°C (48°F) | 0.44" |
| 2019 | 14°C (58°F) | 3°C (38°F) | 0" |
| 2018 | 12°C (54°F) | 3°C (38°F) | 0.3" |
| 2017 | 22°C (72°F) | 13°C (56°F) | 0.7" |
| 2016 | 18°C (65°F) | 1°C (34°F) | 0" |
| 2015 | 16°C (60°F) | 1°C (33°F) | 0.72" |
| 2014 | 22°C (71°F) | 17°C (62°F) | 0.22" |
| 2013 | 15°C (59°F) | 8°C (47°F) | 0" |
| 2012 | 17°C (63°F) | 6°C (43°F) | 0" |
| 2011 | 14°C (58°F) | 8°C (47°F) | 0.47" |
| 2010 | 11°C (51°F) | 8°C (47°F) | 0.68" |
| 2009 | 5°C (41°F) | -4°C (24°F) | 0" |
| 2008 | 17°C (62°F) | 2°C (36°F) | 0.16" |
| 2007 | 11°C (52°F) | 4°C (39°F) | 0" |
| 2006 | 11°C (51°F) | 2°C (36°F) | 0" |
| 2005 | 15°C (59°F) | 8°C (47°F) | 0.86" |
| 2004 | 15°C (59°F) | 9°C (48°F) | 2.46" |
| 2003 | 11°C (52°F) | 8°C (47°F) | 1.8" |
| 2002 | 14°C (57°F) | -1°C (30°F) | 0.05" |
| 2001 | 17°C (63°F) | 9°C (49°F) | 0" |
| 2000 | 12°C (53°F) | 8°C (46°F) | 0" |
| 1999 | 13°C (56°F) | 0°C (32°F) | 0" |
| 1998 | 10°C (50°F) | 7°C (45°F) | 0.04" |
| 1997 | 14°C (58°F) | 3°C (38°F) | 0" |
| 1996 | 7°C (45°F) | -2°C (28°F) | 0.06" |
| 1995 | 13°C (56°F) | 8°C (47°F) | 0.04" |
| 1994 | 14°C (58°F) | -2°C (29°F) | 0" |
| 1993 | 16°C (60°F) | -2°C (28°F) | 0" |
| 1992 | 11°C (52°F) | 6°C (43°F) | 0" |
| 1991 | 13°C (55°F) | 4°C (39°F) | 3.28" |
| 1990 | 16°C (60°F) | 6°C (43°F) | 0.05" |
| 1989 | 16°C (61°F) | 4°C (40°F) | 0.88" |
| 1988 | 14°C (58°F) | 4°C (39°F) | 0" |
| 1987 | 17°C (63°F) | 2°C (35°F) | 0" |
| 1986 | 10°C (50°F) | 3°C (38°F) | 0" |
| 1985 | 14°C (58°F) | 9°C (48°F) | 0.2" |
| 1984 | 20°C (68°F) | 7°C (44°F) | 0" |
| 1983 | 9°C (48°F) | 5°C (41°F) | 0" |
| 1982 | 12°C (54°F) | 6°C (43°F) | 0" |
| 1981 | 14°C (58°F) | 2°C (36°F) | 0.58" |
| 1980 | 8°C (46°F) | -4°C (25°F) | 0" |
| 1979 | 8°C (46°F) | 1°C (34°F) | 0.04" |
| 1978 | 4°C (39°F) | 1°C (33°F) | 0" |
| 1977 | 12°C (54°F) | 4°C (40°F) | 0" |
| 1976 | 17°C (62°F) | 1°C (34°F) | 0" |
| 1975 | 8°C (47°F) | 6°C (43°F) | 0.84" |
| 1974 | 10°C (50°F) | 7°C (45°F) | 0" |
| 1973 | 15°C (59°F) | 6°C (43°F) | 0.13" |
| 1972 | 6°C (42°F) | 0°C (32°F) | 0" |
| 1971 | 20°C (68°F) | 10°C (50°F) | 0" |