Weather on September 10 in Ottawa
Historical weather data for September 10 in Ottawa, Canada
Based on 54 years of data from OTTAWA CDA
About This Date
September 10th in Ottawa, Canada typically brings pleasant fall weather, with average highs around 22°C and lows near 11°C. Over 54 years of records, the warmest September 10th was in 2002 (26°C average), while the coldest was 1978 (9°C) — a 29°F range across recorded history. Rain or other precipitation has occurred on about 43% of September 10th dates historically, with the wettest September 10th recording 1.58" of rain. The last decade has been 5.9°F cooler on this date compared to 20-30 years ago.
The last decade has been 5.9°F cooler on this date compared to 20-30 years ago.
Planning for September 10th in Ottawa? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Year by Year History
| Year | High | Low | Precip (mm) |
|---|---|---|---|
| 2025 | 24°C (76°F) | 7°C (44°F) | -- |
| 2023 | 24°C (75°F) | 14°C (57°F) | 0 mm |
| 2022 | 29°C (84°F) | 13°C (55°F) | 0 mm |
| 2021 | 21°C (70°F) | 12°C (54°F) | 0 mm |
| 2020 | 16°C (60°F) | 11°C (51°F) | 0 mm |
| 2019 | 16°C (61°F) | 4°C (39°F) | 10 mm |
| 2018 | 16°C (60°F) | 8°C (46°F) | 9 mm |
| 2017 | 21°C (69°F) | 6°C (42°F) | 0 mm |
| 2016 | 26°C (79°F) | 14°C (57°F) | 9 mm |
| 2015 | 24°C (75°F) | 12°C (53°F) | -- |
| 2014 | 23°C (74°F) | 13°C (55°F) | 13 mm |
| 2013 | 17°C (63°F) | 13°C (55°F) | 15 mm |
| 2012 | 18°C (64°F) | 9°C (48°F) | 0 mm |
| 2011 | 21°C (70°F) | 13°C (55°F) | 0 mm |
| 2010 | 22°C (71°F) | 10°C (50°F) | 0 mm |
| 2009 | 23°C (74°F) | 9°C (48°F) | 0 mm |
| 2008 | 19°C (66°F) | 5°C (41°F) | 0 mm |
| 2007 | 22°C (71°F) | 8°C (46°F) | -- |
| 2006 | 18°C (64°F) | 7°C (45°F) | 0 mm |
| 2005 | 20°C (68°F) | 6°C (43°F) | 0 mm |
| 2004 | 23°C (74°F) | 13°C (55°F) | 1 mm |
| 2003 | 26°C (79°F) | 6°C (42°F) | 0 mm |
| 2002 | 34°C (93°F) | 17°C (63°F) | 37 mm |
| 2001 | 27°C (80°F) | 20°C (68°F) | 0 mm |
| 2000 | 26°C (78°F) | 11°C (52°F) | 40 mm |
| 1999 | 25°C (77°F) | 18°C (64°F) | 0 mm |
| 1998 | 21°C (69°F) | 9°C (49°F) | 0 mm |
| 1997 | 23°C (73°F) | 13°C (55°F) | 5 mm |
| 1996 | 24°C (75°F) | 17°C (63°F) | 0 mm |
| 1995 | 15°C (59°F) | 6°C (43°F) | 0 mm |
| 1994 | 19°C (66°F) | 8°C (46°F) | 0 mm |
| 1993 | 20°C (68°F) | 13°C (56°F) | 7 mm |
| 1992 | 26°C (78°F) | 16°C (60°F) | 3 mm |
| 1991 | 24°C (76°F) | 14°C (57°F) | 19 mm |
| 1990 | 21°C (69°F) | 11°C (52°F) | 16 mm |
| 1989 | 27°C (80°F) | 21°C (70°F) | 0 mm |
| 1988 | 23°C (73°F) | 9°C (49°F) | 0 mm |
| 1987 | 23°C (74°F) | 14°C (58°F) | 0 mm |
| 1986 | 20°C (68°F) | 8°C (46°F) | 31 mm |
| 1985 | 18°C (65°F) | 12°C (53°F) | 0 mm |
| 1984 | 19°C (67°F) | 16°C (61°F) | 4 mm |
| 1983 | 27°C (80°F) | 18°C (64°F) | 5 mm |
| 1982 | 28°C (83°F) | 13°C (55°F) | 0 mm |
| 1981 | 16°C (60°F) | 7°C (45°F) | 30 mm |
| 1980 | 19°C (66°F) | 8°C (47°F) | 0 mm |
| 1979 | 19°C (67°F) | 10°C (50°F) | 11 mm |
| 1978 | 13°C (56°F) | 5°C (41°F) | 20 mm |
| 1977 | 24°C (75°F) | 18°C (65°F) | 6 mm |
| 1976 | 18°C (65°F) | 13°C (55°F) | 12 mm |
| 1975 | 19°C (66°F) | 3°C (37°F) | 0 mm |
| 1974 | 14°C (58°F) | 12°C (54°F) | 5 mm |
| 1973 | 21°C (69°F) | 3°C (37°F) | 3 mm |
| 1972 | 19°C (67°F) | 6°C (42°F) | 0 mm |
| 1971 | 24°C (76°F) | 9°C (48°F) | 0 mm |