Interactive Ontario Canada First Frost Map

Interactive map of average annual First frost dates for the Province of Ontario

Average First Frost
Jul. 21 - Jul. 30

Average First Frost
Aug. 1 - Aug. 10

Average First Frost
Aug. 11 - Aug. 20

Average First Frost
Aug. 21 - Aug. 31

Average First Frost Sep. 1 - Sep. 10

Average First Frost Sep. 11 - Sep. 20

Average First Frost Sep. 21 - Sep. 31

Average First Frost Oct. 1 - Oct. 10

Average First Frost Oct. 11 - Oct. 20

Average First Frost Oct. 21 - Oct. 31

Average First Frost Nov. 1 - Nov. 10

Average First Frost Nov. 11 - Nov. 20

First Frost Maps for Adjacent States/Provinces

Quebec First Frost Date Map
Michigan First Frost Date Map
New York First Frost Date Map

Other Interactive Gardening Maps for Ontario

Ontario Last Frost Date Map
Ontario Hardiness Zone Map

Zoom to Major Cities in Ontario

Zoom to Ajax First FrostAjax First Frost: October 11 - 20
Zoom to Barrie First FrostBarrie First Frost: October 1 - 10
Zoom toBrampton First FrostBrampton First Frost: October 1 - 10
Zoom to Brantford First FrostBrantford First Frost: October 11 - 20
Zoom to Burlington First FrostBurlington First Frost: October 11 - 20
Zoom to Cambridge First FrostCambridge First Frost: October 1 - 10
Zoom to Etobicoke First FrostEtobicoke First Frost: October 11 - 20
Zoom to Guelph First FrostGuelph First Frost: October 1 - 10
Zoom to Hamilton First FrostHamilton First Frost: October 11 - 20
Zoom to Hull First FrostHull First Frost: October 1 - 10
Zoom to Kingston First FrostKingston First Frost: October 1 - 10
Zoom to Kitchener First FrostKitchener First Frost: October 1 - 10
Zoom to London First FrostLondon First Frost: October 1 - 10
Zoom to Markham First FrostMarkham First Frost: October 21 - 31
Zoom to Mississauga First FrostMississauga First Frost: October 11 - 20
Zoom to Newmarket First FrostNewmarket First Frost: October 11 - 20
Zoom to Niagara Falls First FrostNiagara Falls First Frost: October 21 - 31
Zoom to North Bay First FrostNorth Bay First Frost: September 21 - 30
Zoom to North York First FrostNorth York First Frost: October 21 - 31
Zoom to Oakville First FrostOakville First Frost: October 11 - 20
Zoom to Oshawa First FrostOshawa First Frost: October 11 - 20
Zoom to Ottawa First FrostOttawa First Frost: October 1 - 10
Zoom to Peterborough First FrostPeterborough First Frost: September 21 - 30
Zoom toPickering First FrostPickering First Frost: October 21 - 31
Zoom to Richmond Hill First FrostRichmond Hill First Frost: October 21 - 31
Zoom to Saint Catharines First FrostSaint Catharines First Frost: November 1 - 10
Zoom to Sarnia First FrostSarnia First Frost: October 21 - 31
Zoom to Sault Ste Marie First FrostSault Ste Marie First Frost: September 21 - 30
Zoom to Scarborough First FrostScarborough First Frost: October 21 - 31
Zoom to Stoney Creek First FrostStoney Creek First Frost: October 11 - 20
Zoom to Sudbury First FrostSudbury First Frost: September 21 - 30
Zoom to Thunder Bay First FrostThunder Bay First Frost: September 11 - 20
Zoom to Toronto First FrostToronto First Frost: November 1 - 10
Zoom to Vaughan First FrostVaughan First Frost: October 11 - 20
Zoom to Waterloo First FrostWaterloo First Frost: October 1 - 10
Zoom to Whitby First FrostWhitby First Frost: October 11 - 20
Zoom toWindsor First FrostWindsor First Frost: October 21 - 31