Ottawa Weather in June
In June, Ottawa averages a high of 24°C (75°F) and a low of 13°C (56°F), from 56 years of daily records (1971–2026).
24°C
Average high
75°F
13°C
Average low
56°F
35°C
Record high
96°F · June 14, 1988
2°C
Record low
35°F · June 10, 1980
What June Is Like in Ottawa
- The June heat record, 35°C (96°F) on June 14, 1988, has stood for 38 years.
- The coldest June reading, 2°C (35°F) on June 10, 1980, has not been matched in 46 years.
- June is the wettest month of the year in Ottawa, averaging 91 mm of rain.
- A typical June brings 2.7 days above 30°C (86°F).
At least 1 mm of rain falls on 33% of June days, and the month averages 91 mm in total.
Warmest: 1999 (26.8°C)Latest: 2026 (25.0°C)10-year averageLong-run average (24.0°C)
Look Up a Day in June
See the weather in Ottawa on any June date, year by year.
Source: NOAA GHCN-Daily, Ottawa Cda (1971–2023); Ottawa Cda Rcs (2000–2026). Averages cover 1971–2026. How we compute this