Earliest and Latest Days at or Below 0° C in Oshawa

This is a list of the earliest and latest days in a winter season where the low temperature fell to at least 0 °C in Oshawa, Ontario history. It is based on NOAA data from the years 1882–2024.

Earliest freezing temperature in Oshawa?

The earliest in a winter season that Oshawa, Ontario has recorded a low temperature of 0 °C or below is September 3 which happened in 1916.

Latest freezing temperature in Oshawa?

The latest in a winter season that Oshawa, Ontario has recorded a low temperature of 0 °C or below is May 30 which has happened twice, most recently in 1923.

Earliest Days ≤ 0 °C

Date	Year	Temperature
September 3	1916	0.0 °C
September 14	1923	0.0 °C
September 20	1979	0.0 °C
September 20	1956	0.0 °C
September 20	1916	-1.1 °C
September 21	1916	0.0 °C
September 22	1889	0.0 °C
September 23	1974	-0.6 °C
September 23	1916	-1.1 °C
September 24	1916	-2.2 °C
September 24	1890	0.0 °C
September 25	1925	0.0 °C
September 25	1916	-2.8 °C
September 26	1916	-3.9 °C
September 26	1893	-0.6 °C
September 26	1887	0.0 °C
September 27	1916	-2.2 °C
September 28	1916	-1.1 °C
September 28	1915	0.0 °C
September 28	1890	0.0 °C

Latest Days ≤ 0 °C

Date	Year	Temperature
May 30	1923	-1.7 °C
May 30	1884	-1.7 °C
May 29	1889	-2.2 °C
May 25	1956	-0.6 °C
May 24	1956	0.0 °C
May 23	2015	-2.0 °C
May 23	1925	0.0 °C
May 22	2015	-0.6 °C
May 22	1924	-1.1 °C
May 21	1924	-1.7 °C
May 20	1924	-1.1 °C
May 19	2002	0.0 °C
May 19	1916	-0.6 °C
May 18	2009	0.0 °C
May 18	1997	0.0 °C
May 18	1983	0.0 °C
May 18	1916	0.0 °C
May 18	1915	-1.1 °C
May 18	1890	-1.1 °C
May 17	2023	-0.2 °C
May 17	1957	0.0 °C
May 17	1956	-2.2 °C
May 17	1886	-0.6 °C