City,Province,Climate ID,Last Spring Frost 10%,Last Spring Frost 25%,Last Spring Frost 50%,Last Spring Frost 75%,Last Spring Frost 90%,First Fall Frost 10%,First Fall Frost 25%,First Fall Frost 50%,First Fall Frost 75%,First Fall Frost 90%,Source
Toronto,ON,6158733,May 19,May 13,May 04,Apr 28,Apr 17,Sep 22,Sep 29,Oct 09,Oct 20,Oct 30,"Environment and Climate Change Canada Canadian Climate Normals 1991-2020 (frost-probability dates computed over the long-term daily-minimum-temperature record), same-station by Climate ID, compiled by GrowersGuide.ca"
Ottawa,ON,6106000,May 20,May 13,May 07,Apr 26,Apr 19,Sep 24,Sep 28,Oct 02,Oct 09,Oct 16,"Environment and Climate Change Canada Canadian Climate Normals 1991-2020 (frost-probability dates computed over the long-term daily-minimum-temperature record), same-station by Climate ID, compiled by GrowersGuide.ca"
Montreal,QC,7025250,May 15,May 08,Apr 29,Apr 24,Apr 20,Sep 28,Oct 02,Oct 09,Oct 16,Oct 21,"Environment and Climate Change Canada Canadian Climate Normals 1991-2020 (frost-probability dates computed over the long-term daily-minimum-temperature record), same-station by Climate ID, compiled by GrowersGuide.ca"
Quebec City,QC,7016294,May 26,May 18,May 11,May 05,Apr 30,Sep 20,Sep 24,Oct 01,Oct 09,Oct 15,"Environment and Climate Change Canada Canadian Climate Normals 1991-2020 (frost-probability dates computed over the long-term daily-minimum-temperature record), same-station by Climate ID, compiled by GrowersGuide.ca"
Fredericton,NB,8101500,May 31,May 26,May 16,May 09,May 02,Sep 14,Sep 16,Sep 24,Oct 02,Oct 07,"Environment and Climate Change Canada Canadian Climate Normals 1991-2020 (frost-probability dates computed over the long-term daily-minimum-temperature record), same-station by Climate ID, compiled by GrowersGuide.ca"
Charlottetown,PE,8300300,May 30,May 24,May 18,May 07,Apr 30,Oct 06,Oct 12,Oct 17,Oct 23,Oct 30,"Environment and Climate Change Canada Canadian Climate Normals 1991-2020 (frost-probability dates computed over the long-term daily-minimum-temperature record), same-station by Climate ID, compiled by GrowersGuide.ca"
St. John's,NL,8403506,Jun 16,Jun 09,Jun 01,May 23,May 18,Sep 28,Oct 07,Oct 15,Oct 21,Oct 26,"Environment and Climate Change Canada Canadian Climate Normals 1991-2020 (frost-probability dates computed over the long-term daily-minimum-temperature record), same-station by Climate ID, compiled by GrowersGuide.ca"
Winnipeg,MB,5023222,Jun 07,Jun 01,May 24,May 17,May 09,Sep 12,Sep 16,Sep 22,Sep 28,Oct 03,"Environment and Climate Change Canada Canadian Climate Normals 1991-2020 (frost-probability dates computed over the long-term daily-minimum-temperature record), same-station by Climate ID, compiled by GrowersGuide.ca"
Regina,SK,4016560,Jun 15,Jun 05,May 28,May 17,May 10,Aug 22,Sep 03,Sep 11,Sep 18,Sep 23,"Environment and Climate Change Canada Canadian Climate Normals 1991-2020 (frost-probability dates computed over the long-term daily-minimum-temperature record), same-station by Climate ID, compiled by GrowersGuide.ca"
Saskatoon,SK,4057120,Jun 07,May 29,May 22,May 14,May 08,Sep 01,Sep 08,Sep 15,Sep 21,Sep 27,"Environment and Climate Change Canada Canadian Climate Normals 1991-2020 (frost-probability dates computed over the long-term daily-minimum-temperature record), same-station by Climate ID, compiled by GrowersGuide.ca"
Calgary,AB,3031093,Jun 11,Jun 05,May 26,May 19,May 11,Aug 27,Sep 03,Sep 10,Sep 19,Sep 27,"Environment and Climate Change Canada Canadian Climate Normals 1991-2020 (frost-probability dates computed over the long-term daily-minimum-temperature record), same-station by Climate ID, compiled by GrowersGuide.ca"
Edmonton,AB,3012205,Jun 10,May 31,May 22,May 16,May 12,Aug 21,Sep 03,Sep 11,Sep 19,Sep 27,"Environment and Climate Change Canada Canadian Climate Normals 1991-2020 (frost-probability dates computed over the long-term daily-minimum-temperature record), same-station by Climate ID, compiled by GrowersGuide.ca"
Vancouver,BC,1108447,Apr 21,Apr 06,Mar 26,Mar 15,Mar 04,Oct 15,Oct 27,Nov 04,Nov 12,Nov 24,"Environment and Climate Change Canada Canadian Climate Normals 1991-2020 (frost-probability dates computed over the long-term daily-minimum-temperature record), same-station by Climate ID, compiled by GrowersGuide.ca"
Victoria,BC,1018620,Apr 30,Apr 25,Apr 14,Mar 31,Mar 22,Oct 17,Oct 30,Nov 05,Nov 11,Nov 23,"Environment and Climate Change Canada Canadian Climate Normals 1991-2020 (frost-probability dates computed over the long-term daily-minimum-temperature record), same-station by Climate ID, compiled by GrowersGuide.ca"
London,ON,6144475,May 21,May 13,May 07,Apr 28,Apr 20,Sep 26,Oct 02,Oct 11,Oct 18,Oct 26,"Environment and Climate Change Canada Canadian Climate Normals 1991-2020 (frost-probability dates computed over the long-term daily-minimum-temperature record), same-station by Climate ID, compiled by GrowersGuide.ca"
Windsor,ON,6139525,May 09,May 01,Apr 22,Apr 15,Apr 10,Oct 07,Oct 17,Oct 25,Nov 03,Nov 11,"Environment and Climate Change Canada Canadian Climate Normals 1991-2020 (frost-probability dates computed over the long-term daily-minimum-temperature record), same-station by Climate ID, compiled by GrowersGuide.ca"
Kelowna,BC,1123970,Jun 02,May 25,May 16,May 05,Apr 30,Sep 10,Sep 17,Sep 23,Oct 03,Oct 10,"Environment and Climate Change Canada Canadian Climate Normals 1991-2020 (frost-probability dates computed over the long-term daily-minimum-temperature record), same-station by Climate ID, compiled by GrowersGuide.ca"
Halifax,NS,8202250,May 26,May 17,May 08,Apr 30,Apr 26,Oct 03,Oct 10,Oct 17,Oct 23,Nov 01,"Environment and Climate Change Canada Canadian Climate Normals 1991-2020 (frost-probability dates computed over the long-term daily-minimum-temperature record), same-station by Climate ID, compiled by GrowersGuide.ca"
Sudbury,ON,6068150,May 31,May 25,May 17,May 08,May 04,Sep 14,Sep 20,Sep 27,Oct 06,Oct 12,"Environment and Climate Change Canada Canadian Climate Normals 1991-2020 (frost-probability dates computed over the long-term daily-minimum-temperature record), same-station by Climate ID, compiled by GrowersGuide.ca"