Highest Daily Low Temperatures in Oshawa History

This is a list of the hottest daily low temperatures ever recorded in Oshawa, Ontario history from 1882–2024 based on data from the NOAA.

Highest temperatures all-time

Record for the highest daily low temperature in Oshawa

The highest low temperature for a calendar day in Oshawa, Ontario history was 26.1 °C which happened on Thursday, July 7, 1921.

Rank	Temperature	Date
1	26.1 °C	July 7, 1921
2	25.6 °C	July 6, 1921
3	24.5 °C	July 16, 2005
4	24.4 °C	August 12, 2016
5	24.0 °C	August 2, 2006
5	24.0 °C	July 18, 2005
7	23.9 °C	August 21, 1955
7	23.9 °C	June 4, 1925
7	23.9 °C	July 19, 1893
10	23.5 °C	August 1, 2006
10	23.5 °C	July 19, 2005
10	23.5 °C	August 14, 1988
13	23.3 °C	August 29, 1973
13	23.3 °C	July 29, 1916
15	23.2 °C	July 21, 2011
16	23.0 °C	August 2, 2002
16	23.0 °C	August 10, 2001
16	23.0 °C	July 6, 1999
16	23.0 °C	August 12, 1995
16	23.0 °C	August 4, 1988
16	23.0 °C	August 17, 1987