Earliest and Latest Days of 30° C in Welland

This is a list of the earliest and latest days in the year with a high temperature of at least 30 °C in Welland, Ontario history. It is based on NOAA data from the years 1872–2024.

Also see:

Earliest 30 degree day in Welland?

The earliest in the year that Welland, Ontario had a high temperature of at least 30 °C is April 28 which happened in 1990.

Latest 30 degree day in Welland?

The latest in the year that Welland, Ontario had a high temperature of at least 30 °C is October 7 which happened in 1946.

Earliest Days ≥ 30 °C

Date	Year	Temperature
April 28	1990	32.5 °C
May 1	1942	30.6 °C
May 4	1895	30.6 °C
May 5	1895	32.8 °C
May 7	1930	30.6 °C
May 8	2015	30.3 °C
May 9	2015	30.4 °C
May 10	1936	30.6 °C
May 10	1896	30.0 °C
May 11	1879	30.6 °C
May 13	2004	30.0 °C
May 16	1998	30.0 °C
May 17	1962	30.6 °C
May 18	1962	30.0 °C
May 19	2012	30.0 °C
May 19	1962	30.0 °C
May 19	1911	31.7 °C
May 20	2021	30.5 °C
May 20	2013	30.0 °C
May 20	1921	30.0 °C
May 20	1911	31.7 °C

Latest Days ≥ 30 °C

Date	Year	Temperature
October 7	1946	31.1 °C
October 5	1951	30.6 °C
October 4	1951	30.0 °C
October 2	1927	32.2 °C
September 30	1881	30.6 °C
September 28	1959	31.7 °C
September 28	1946	30.6 °C
September 27	2017	30.4 °C
September 27	1946	30.0 °C
September 26	2017	31.0 °C
September 26	1959	30.0 °C
September 26	1881	30.6 °C
September 25	2017	31.7 °C
September 25	1934	30.6 °C
September 24	2017	31.7 °C
September 24	2010	31.0 °C
September 24	1970	30.6 °C
September 23	1936	32.2 °C
September 22	1965	30.0 °C
September 22	1946	30.0 °C
September 22	1895	32.2 °C