Ottawa Weather in July
In July, Ottawa averages a high of 27°C (80°F) and a low of 16°C (60°F), based on 55 years of historical weather data from OTTAWA CDA.
27°C
Average high
80°F
16°C
Average low
60°F
37°C
Record high
99°F · 2020
5°C
Record low
41°F · 1982
What to Expect in Ottawa in July
Typical July days in Ottawa reach 27°C (80°F) during the afternoon and cool to around 16°C (60°F) overnight. On average, measurable rain falls on about 38% of days this month. Over the past 55 years, July temperatures in Ottawa have ranged from a record high of 37°C (2020) down to a record low of 5°C (1982).
For a day-by-day look or other months, see the full Ottawa weather history.