Weather on September 28 in Ottawa
Historical weather data for September 28 in Ottawa, Canada
Based on 55 years of data from OTTAWA CDA
About This Date
September 28th in Ottawa, Canada typically brings mild fall weather, with average highs around 18°C and lows near 9°C. Over 55 years of records, the warmest September 28th was in 2020 (21°C average), while the coldest was 2000 (4°C) — a 30°F range across recorded history. Rain or other precipitation has occurred on about 40% of September 28th dates historically, with the wettest September 28th recording 1.98" of rain. The last decade has been 2.2°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.2°F warmer on this date compared to 20-30 years ago.
Planning for September 28th in Ottawa? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Year by Year History
| Year | High | Low | Precip |
|---|---|---|---|
| 2025 | 24°C (75°F) | 16°C (60°F) | -- |
| 2024 | 22°C (71°F) | 9°C (48°F) | 0" |
| 2023 | 22°C (71°F) | 4°C (40°F) | 0" |
| 2022 | 15°C (59°F) | 12°C (53°F) | 0" |
| 2021 | 16°C (61°F) | 6°C (42°F) | 0" |
| 2020 | 27°C (80°F) | 15°C (59°F) | 0" |
| 2019 | 18°C (65°F) | 9°C (48°F) | 0.68" |
| 2018 | 21°C (70°F) | 7°C (45°F) | 0.32" |
| 2017 | 15°C (59°F) | 10°C (50°F) | 0" |
| 2016 | 19°C (67°F) | 11°C (51°F) | 0" |
| 2015 | 21°C (70°F) | 16°C (61°F) | 0.44" |
| 2014 | 26°C (78°F) | 14°C (58°F) | 0" |
| 2013 | 22°C (71°F) | 6°C (42°F) | 0" |
| 2012 | 17°C (62°F) | 2°C (36°F) | -- |
| 2011 | 23°C (74°F) | 14°C (58°F) | 0" |
| 2010 | 24°C (75°F) | 14°C (57°F) | 1.93" |
| 2009 | 17°C (62°F) | 11°C (52°F) | 0.32" |
| 2008 | 21°C (70°F) | 15°C (59°F) | 0.02" |
| 2007 | 19°C (67°F) | 11°C (52°F) | 0" |
| 2006 | 17°C (63°F) | 9°C (48°F) | 1.59" |
| 2005 | 22°C (71°F) | 9°C (48°F) | 0" |
| 2004 | 18°C (65°F) | 8°C (47°F) | 0" |
| 2003 | 16°C (61°F) | 12°C (53°F) | 0.19" |
| 2002 | 16°C (61°F) | 10°C (50°F) | 0" |
| 2001 | 14°C (57°F) | 9°C (49°F) | 0.08" |
| 2000 | 9°C (48°F) | 0°C (32°F) | 0" |
| 1999 | 27°C (81°F) | 14°C (57°F) | 0" |
| 1998 | 17°C (62°F) | 12°C (54°F) | 0" |
| 1997 | 21°C (69°F) | 6°C (42°F) | 0.58" |
| 1996 | 19°C (66°F) | 13°C (56°F) | 1.78" |
| 1995 | 14°C (58°F) | 4°C (39°F) | 0" |
| 1994 | 16°C (60°F) | 12°C (53°F) | 1.32" |
| 1993 | 16°C (60°F) | 11°C (51°F) | 0.06" |
| 1992 | 19°C (66°F) | 11°C (51°F) | 0.08" |
| 1991 | 8°C (47°F) | 4°C (39°F) | 0.56" |
| 1990 | 23°C (74°F) | 10°C (50°F) | 1.98" |
| 1989 | 18°C (65°F) | 2°C (36°F) | 0" |
| 1988 | 14°C (57°F) | 7°C (44°F) | 0" |
| 1987 | 24°C (75°F) | 7°C (44°F) | 0.26" |
| 1986 | 15°C (59°F) | 9°C (49°F) | 0.38" |
| 1985 | 19°C (67°F) | 9°C (48°F) | 0" |
| 1984 | 16°C (60°F) | 1°C (33°F) | 0" |
| 1983 | 19°C (67°F) | 6°C (42°F) | 0" |
| 1982 | 17°C (62°F) | 13°C (55°F) | 0" |
| 1981 | 11°C (52°F) | 8°C (46°F) | 0.02" |
| 1980 | 10°C (50°F) | 5°C (41°F) | 0" |
| 1979 | 19°C (66°F) | 12°C (53°F) | 0" |
| 1978 | 13°C (56°F) | 7°C (44°F) | 0" |
| 1977 | 14°C (58°F) | 10°C (50°F) | 0.28" |
| 1976 | 12°C (53°F) | 3°C (37°F) | 0" |
| 1975 | 20°C (68°F) | 11°C (52°F) | 0.03" |
| 1974 | 20°C (68°F) | 12°C (53°F) | 0.18" |
| 1973 | 20°C (68°F) | 9°C (48°F) | 0" |
| 1972 | 16°C (60°F) | 1°C (34°F) | 0" |
| 1971 | 21°C (69°F) | 11°C (51°F) | 0" |