Weather on May 31 in Ottawa
Historical weather data for May 31 in Ottawa, Canada
Based on 55 years of data from OTTAWA CDA
About This Date
May 31st in Ottawa, Canada typically brings pleasant spring weather, with average highs around 22°C and lows near 12°C. Over 55 years of records, the warmest May 31st was in 2013 (25°C average), while the coldest was 2009 (8°C) — a 30°F range across recorded history. Rain or other precipitation has occurred on about 64% of May 31st dates historically, with the wettest May 31st recording 3.2" of rain. Temperatures on this date have remained relatively stable over the past several decades.
Temperatures on this date have remained relatively stable over the past several decades.
Planning for May 31st in Ottawa? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Year by Year History
| Year | High | Low | Precip (mm) |
|---|---|---|---|
| 2026 | 21°C (69°F) | 12°C (53°F) | -- |
| 2025 | 23°C (74°F) | 8°C (46°F) | 81 mm |
| 2023 | 32°C (89°F) | 12°C (53°F) | 0 mm |
| 2022 | 24°C (75°F) | 18°C (64°F) | 3 mm |
| 2021 | 23°C (74°F) | 5°C (41°F) | 0 mm |
| 2020 | 13°C (55°F) | 4°C (40°F) | 0 mm |
| 2019 | 15°C (59°F) | 6°C (42°F) | 1 mm |
| 2018 | 26°C (79°F) | 20°C (68°F) | 4 mm |
| 2017 | 22°C (72°F) | 12°C (54°F) | 2 mm |
| 2016 | 23°C (74°F) | 11°C (51°F) | 1 mm |
| 2015 | 14°C (57°F) | 8°C (46°F) | 2 mm |
| 2014 | 23°C (74°F) | 11°C (51°F) | 0 mm |
| 2013 | 32°C (89°F) | 18°C (65°F) | 2 mm |
| 2012 | 18°C (64°F) | 11°C (51°F) | 0 mm |
| 2011 | 30°C (86°F) | 17°C (62°F) | 0 mm |
| 2010 | 24°C (75°F) | 13°C (56°F) | 0 mm |
| 2009 | 12°C (53°F) | 4°C (40°F) | 3 mm |
| 2008 | 23°C (73°F) | 11°C (52°F) | 44 mm |
| 2007 | 22°C (71°F) | 16°C (61°F) | 38 mm |
| 2006 | 30°C (86°F) | 17°C (63°F) | 9 mm |
| 2005 | 24°C (76°F) | 9°C (48°F) | 0 mm |
| 2004 | 20°C (68°F) | 7°C (44°F) | 6 mm |
| 2003 | 18°C (64°F) | 13°C (55°F) | 1 mm |
| 2002 | 24°C (75°F) | 15°C (59°F) | 29 mm |
| 2001 | 17°C (63°F) | 4°C (40°F) | 0 mm |
| 2000 | 21°C (70°F) | 14°C (58°F) | 1 mm |
| 1999 | 32°C (90°F) | 17°C (62°F) | 8 mm |
| 1998 | 27°C (80°F) | 9°C (49°F) | 27 mm |
| 1997 | 23°C (73°F) | 11°C (52°F) | 0 mm |
| 1996 | 24°C (76°F) | 9°C (49°F) | 0 mm |
| 1995 | 31°C (87°F) | 14°C (57°F) | 0 mm |
| 1994 | 27°C (81°F) | 16°C (60°F) | 22 mm |
| 1993 | 15°C (59°F) | 11°C (51°F) | 63 mm |
| 1992 | 15°C (59°F) | 12°C (54°F) | 17 mm |
| 1991 | 26°C (79°F) | 15°C (59°F) | 3 mm |
| 1990 | 25°C (77°F) | 8°C (46°F) | 0 mm |
| 1989 | 22°C (71°F) | 13°C (56°F) | 1 mm |
| 1988 | 26°C (79°F) | 17°C (63°F) | 0 mm |
| 1987 | 23°C (74°F) | 18°C (64°F) | 7 mm |
| 1986 | 18°C (65°F) | 12°C (53°F) | 20 mm |
| 1985 | 23°C (73°F) | 17°C (62°F) | 39 mm |
| 1984 | 17°C (62°F) | 3°C (38°F) | 0 mm |
| 1983 | 18°C (64°F) | 11°C (52°F) | 0 mm |
| 1982 | 24°C (75°F) | 19°C (66°F) | 1 mm |
| 1981 | 18°C (65°F) | 12°C (53°F) | 0 mm |
| 1980 | 27°C (80°F) | 16°C (61°F) | 3 mm |
| 1979 | 23°C (73°F) | 9°C (49°F) | 0 mm |
| 1978 | 26°C (79°F) | 17°C (63°F) | 44 mm |
| 1977 | 26°C (79°F) | 12°C (53°F) | 5 mm |
| 1976 | 23°C (73°F) | 13°C (55°F) | 34 mm |
| 1975 | 27°C (80°F) | 17°C (62°F) | 7 mm |
| 1974 | 23°C (73°F) | 9°C (49°F) | 12 mm |
| 1973 | 22°C (71°F) | 13°C (55°F) | 2 mm |
| 1972 | 16°C (61°F) | 11°C (51°F) | 15 mm |
| 1971 | 18°C (64°F) | 7°C (44°F) | 0 mm |