Ottawa Weather in July
In July, Ottawa averages a high of 27°C (80°F) and a low of 16°C (60°F), from 55 years of daily records (1971–2026).
27°C
Average high
80°F
16°C
Average low
60°F
36°C
Record high
98°F · July 10, 2020
5°C
Record low
41°F · July 3, 1982
What July Is Like in Ottawa
- 5 of the 10 warmest Julys on record in Ottawa have come since 2012.
- The coldest July reading, 5°C (41°F) on July 3, 1982, has not been matched in 44 years.
- July is Ottawa's warmest month of the year.
- A typical July brings 5.5 days above 30°C (86°F).
At least 1 mm of rain falls on 30% of July days, and the month averages 88 mm in total.
Warmest: 2020 (30.1°C)Latest: 2026 (26.9°C)10-year averageLong-run average (26.6°C)
Look Up a Day in July
See the weather in Ottawa on any July 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