New Record High's Sept 24

Weather summary for all of Southern Ontario and the National Capital
Region issued by Environment Canada Toronto at
8:30 AM EDT Saturday 25 September 2010.

..Records tumble as early autumn heat graces Southern Ontario..
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==weather event discussion==

An intense low pressure area which gave heavy rainfall to Northern
Ontario provided a reminder of our summer heat in Southern Ontario.
Numerous high temperature records fell across the region on Friday
with the mercury soaring into the high twenties and low thirties
accompanied by howling, hot winds. It's a one-day wonder, however,
As a cold front swept the heat into the record books last night,
making way for a rather cool weekend.

Below is a list of the temperature records broken on Friday. Since
the last update, Buttonville's maximum temperature was adjusted
upwards, and London and Vineland were added with tied values.

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Date
Location                    new record      old record

Toronto city                30.1            28.3 (1920)
Toronto Pearson airport     30.8            27.2 (1970)
Markham (Buttonville)       31.0            27.2 (2004,2007)
Hamilton                    29.8            29.4 (1970)
Delhi                       30.0            29.4 (1970)
Barrie                      28.2            28.0 (2007)
Orillia                     30.0            27.8 (1916)
Peterborough                28.7            27.8 (1970)
Muskoka                     28.6            26.7 (1970)
Bancroft                    27.7            26.3 (2004)
Ottawa                      28.5            26.9 (2004,2007)
London                      28.3 (tied)     28.3 (1970)
Vineland                    30.6 (tied)     30.6 (1970)