Weather on June 18 in Ottawa
Historical weather data for June 18 in Ottawa, Canada
Based on 55 years of data from OTTAWA CDA RCS
About This Date
June 18th in Ottawa, Canada typically brings pleasant summer weather, with average highs around 24°C and lows near 14°C. Over 55 years of records, the warmest June 18th was in 1994 (27°C average), while the coldest was 1980 (13°C) — a 26°F range across recorded history. Rain or other precipitation has occurred on about 35% of June 18th dates historically, with the wettest June 18th recording 2.46" of rain. The last decade has been 4.0°F warmer on this date compared to 20-30 years ago.
The last decade has been 4.0°F warmer on this date compared to 20-30 years ago.
Planning for June 18th in Ottawa? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Year by Year History
| Year | High | Low | Precip (mm) |
|---|---|---|---|
| 2026 | 22°C (71°F) | 16°C (60°F) | -- |
| 2025 | 29°C (85°F) | 20°C (68°F) | -- |
| 2023 | 23°C (74°F) | 15°C (59°F) | 0 mm |
| 2022 | 16°C (61°F) | 9°C (48°F) | 0 mm |
| 2021 | 21°C (69°F) | 14°C (57°F) | 45 mm |
| 2020 | 32°C (90°F) | 13°C (55°F) | 0 mm |
| 2019 | 26°C (79°F) | 12°C (53°F) | 0 mm |
| 2018 | 29°C (84°F) | 21°C (70°F) | 7 mm |
| 2017 | 31°C (88°F) | 20°C (68°F) | 0 mm |
| 2016 | 32°C (90°F) | 11°C (52°F) | 0 mm |
| 2015 | 27°C (81°F) | 13°C (56°F) | 27 mm |
| 2014 | 25°C (77°F) | 16°C (61°F) | 0 mm |
| 2013 | 21°C (69°F) | 7°C (45°F) | 0 mm |
| 2012 | 26°C (79°F) | 19°C (66°F) | 0 mm |
| 2011 | 24°C (76°F) | 14°C (57°F) | 0 mm |
| 2010 | 28°C (83°F) | 16°C (60°F) | 0 mm |
| 2009 | 19°C (66°F) | 16°C (60°F) | 21 mm |
| 2008 | 19°C (66°F) | 12°C (54°F) | 62 mm |
| 2007 | 24°C (76°F) | 12°C (54°F) | 0 mm |
| 2006 | 32°C (89°F) | 18°C (64°F) | 0 mm |
| 2005 | 17°C (63°F) | 12°C (54°F) | 0 mm |
| 2004 | 28°C (82°F) | 19°C (66°F) | 0 mm |
| 2003 | 27°C (80°F) | 13°C (56°F) | 4 mm |
| 2002 | 22°C (71°F) | 13°C (55°F) | 0 mm |
| 2001 | 25°C (77°F) | 16°C (60°F) | 1 mm |
| 2000 | 16°C (61°F) | 13°C (55°F) | 6 mm |
| 1999 | 22°C (72°F) | 8°C (46°F) | 0 mm |
| 1998 | 26°C (78°F) | 18°C (65°F) | 3 mm |
| 1997 | 19°C (66°F) | 13°C (55°F) | 10 mm |
| 1996 | 25°C (77°F) | 16°C (61°F) | 0 mm |
| 1995 | 32°C (89°F) | 17°C (63°F) | 0 mm |
| 1994 | 34°C (93°F) | 21°C (70°F) | 0 mm |
| 1993 | 19°C (67°F) | 17°C (62°F) | 21 mm |
| 1992 | 27°C (80°F) | 19°C (66°F) | 0 mm |
| 1991 | 29°C (85°F) | 13°C (56°F) | 0 mm |
| 1990 | 31°C (87°F) | 23°C (73°F) | 0 mm |
| 1989 | 18°C (65°F) | 13°C (55°F) | 1 mm |
| 1988 | 28°C (83°F) | 10°C (50°F) | 0 mm |
| 1987 | 28°C (82°F) | 9°C (49°F) | 2 mm |
| 1986 | 21°C (69°F) | 9°C (48°F) | 0 mm |
| 1985 | 25°C (77°F) | 14°C (58°F) | 0 mm |
| 1984 | 25°C (77°F) | 17°C (62°F) | 16 mm |
| 1983 | 27°C (81°F) | 12°C (54°F) | 0 mm |
| 1982 | 23°C (73°F) | 15°C (59°F) | 16 mm |
| 1981 | 24°C (75°F) | 13°C (56°F) | 0 mm |
| 1980 | 17°C (62°F) | 9°C (48°F) | 9 mm |
| 1979 | 23°C (74°F) | 12°C (53°F) | 0 mm |
| 1978 | 26°C (79°F) | 18°C (64°F) | 29 mm |
| 1977 | 19°C (67°F) | 14°C (58°F) | 34 mm |
| 1976 | 26°C (78°F) | 13°C (55°F) | 0 mm |
| 1975 | 28°C (82°F) | 21°C (69°F) | 0 mm |
| 1974 | 19°C (67°F) | 9°C (49°F) | 4 mm |
| 1973 | 21°C (70°F) | 11°C (51°F) | 0 mm |
| 1972 | 25°C (77°F) | 8°C (47°F) | 0 mm |
| 1971 | 28°C (83°F) | 13°C (56°F) | 0 mm |