PLEASE NOTE:
Frost dates listed are "0 Frost" dates. Going by visitor feedback and personal knowledge of various areas,
I would recommend deducting 2 weeks from "First Frost" dates, and adding
2 weeks to "Last Frost" dates. There is a slight chance you may still get a minor frost but it is highly unlikely.
This frost date chart should only be used as a guide. Each area may go through periods of extended weather fluctuations that
may differ slightly from this chart. If you are new to gardening or have recently moved to a new area, consult a professional
garden shop in your area to compare the dates on this chart to actual frost dates.
Newfoundland
Location
Last Frost
First Frost
Corner Brook
May 22
October 12
Grand Falls
June 2
September 26
St. John's
June 2
October 12
Nova Scotia
Location
Last Frost
First Frost
Halifax
May 6
October 20
Kentville
May 16
October 5
Shelburne
May 14
September 29
Sydney
May 24
October 13
Yarmouth
May 1
October 18
Prince Edward Island
Location
Last Frost
First Frost
Charlottetown
May 17
October 9
Summerside
May 9
October 19
Tignish
May 23
October 9
New Brunswick
Location
Last Frost
First Frost
Bathurst
May 19
September 26
Edmunston
May 28
September 18
Fredericton
May 20
September 22
Grand Falls
May 24
September 24
Moncton
May 24
September 27
Saint John
May 18
October 4
Quebec
Location
Last Frost
First Frost
Baie Comeau
May 28
September 15
Chicoutimi
May 17
September 30
Montreal
May 3
October 7
Quebec
May 13
September 29
Rimouski
May 13
September 30
Sherbrooke
June 1
September 10
Trois-Rivieres
May 19
September 23
Thetford Mines
May 28
September 14
Ontario
Location
Last Frost
First Frost
Barrie
May 26
September 16
Hamilton
April 29
October 15
Kingston
May 2
October 10
London
May 9
October 8
Ottawa
May 6
October 5
Owen Sound
May 12
October 15
Parry Sound
May 17
September 28
Peterborough
May 18
September 20
St. Catherines
May 2
October 17
Sudbury
May 17
September 25
Thunder Bay
June 1
September 15
Timmins
June 8
September 6
Toronto
May 9
October 6
Windsor
April 25
October 22
Manitoba
Location
Last Frost
First Frost
Brandon
May 27
September 10
The Pas
May 27
September 17
Thompson
June 15
August 16
Winnipeg
May 25
September 22
Saskatchewan
Location
Last Frost
First Frost
Moose Jaw
May 20
September 18
Prince Albert
June 2
September 4
Regina
May 21
September 10
Saskatoon
May 21
September 15
Weyburn
May 22
September 12
Alberta
Location
Last Frost
First Frost
Athabaska
June 1
August 29
Calgary
May 23
September 15
Edmonton
May 7
September 23
Grande Prairie
May 18
September 13
Lethbridge
May 17
September 18
Medicine Hat
May 16
September 22
Red Deer
May 25
September 9
British Columbia
Location
Last Frost
First Frost
Chilliwack
April 6
November 9
Dawson Creek
June 5
August 29
Kamloops
May 1
October 5
Kelowna
May 19
September 20
Nanaimo
April 28
October 17
Port Alberni
May 8
October 15
Prince George
June 4
September 3
Terrace
May 5
October 17
Vancouver
March 28
November 5
Vernon
April 28
October 4
Victoria
April 19
November 5
Territories
Location
Last Frost
First Frost
Whitehorse
June 11
August 25
Dawson Creek
June 5
August 29
Yellowknife
May 27
September 15
Chart data from Veseys.com - The best seed company in North America.
