Yesterday was day #2 for record temps.
Weather summary
for Ontario and the National Capital Region
issued by Environment Canada
at 2:06 p.m. EDT Tuesday 24 June 2025.
Discussion.
Southern Ontario and portions of northeastern Ontario saw multiple
daily maximum temperature records with an ongoing heat event.
The following areas set a daily maximum temperature record on June
23, 2025 (temperature values given in degrees Celsius):
ALGONQUIN PARK
New record of 32.7
Old record of 29.4 set in 1947
Records in this area have been kept since 1917
BARRIE AREA
New record of 34.3
Old record of 32.2 set in 1975
Records in this area have been kept since 1866
GORE BAY AREA
New record of 32.0
Old record of 30.6 set in 1987
Records in this area have been kept since 1915
GUELPH AREA
New record of 33.8
Old record of 31.7 set in 1983
Records in this area have been kept since 1881
HALDIMAND COUNTY AREA
New record of 34.1
Old record of 32.0 set in 2002
Records in this area have been kept since 1931
KEMPTVILLE AREA
New record of 34.1
Old record of 32.2 set in 2003
Records in this area have been kept since 1902
KIRKLAND LAKE AREA
New record of 33.5
Old record of 33.1 set in 2003
Records in this area have been kept since 1950
MOUNT FOREST AREA
New record of 32.8
Old record of 31.7 set in 1923
Records in this area have been kept since 1889
MUSKOKA AREA
New record of 33.9
Old record of 31.1 set in 2013
Records in this area have been kept since 1875
OAKVILLE AREA
New record of 35.1
Old record of 34.5 set in 1983
Records in this area have been kept since 1947
OSHAWA AREA
New record of 33.7
Old record of 32.5 set in 2002
Records in this area have been kept since 1882
OTTAWA AREA
New record of 35.2
Old record of 33.3 set in 1983
Records in this area have been kept since 1938
PETAWAWA AREA
New record of 34.8
Old record of 33.9 set in 1975
Records in this area have been kept since 1915
PETERBOROUGH AREA
New record of 34.7
Old record of 32.8 set in 1938
Records in this area have been kept since 1866
SARNIA AREA
New record of 34.8
Old record of 32.9 set in 1983
Records in this area have been kept since 1948
ST. CATHARINES AREA
New record of 35.2
Old record of 33.3 set in 1964
Records in this area have been kept since 1901
SUDBURY AREA
New record of 32.4
Old record of 31.5 set in 2003
Records in this area have been kept since 1954
TORONTO AREA
New record of 36.0
Old record of 32.8 set in 1983
Records in this area have been kept since 1840
TRENTON AREA
New record of 33.9
Old record of 31.7 set in 1966
Records in this area have been kept since 1921
WIARTON AREA
New record of 32.3
Old record of 31.7 set in 1964
Records in this area have been kept since 1947
WINDSOR AREA
New record of 34.1
Old record of 33.9 set in 1884
Records in this area have been kept since 1866
