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Below is a chart showing frost dates in the spring and fall for various Canadian cities. (Also, see our frost dates for U.S. cities.)
Dates given for Canada are normal averages for a light freeze (29° to 32°F, or -2° to 0°C); local weather and topography may cause considerable variations. The possibility of frost occurring after the spring dates and before the fall dates is 50 percent. The classification of freezing temperatures is usually based on their effect on plants. A light freeze kills only tender plants, with little destructive effect on other vegetation.
If you're a gardener, see more on how to predict and prepare for a frost.
| City | Province |
Growing Season (Length in Days) |
Last Frost Spring |
First Frost Fall |
|---|---|---|---|---|
| Athabasca | AB | 88 | Jun. 1 | Aug. 29 |
| Calgary | AB | 114 | May 23 | Sept. 15 |
| Edmonton | AB | 138 | May 7 | Sept. 23 |
| Grande Prairie | AB | 117 | May 18 | Sept. 13 |
| Lethbridge | AB | 123 | May 17 | Sept. 18 |
| Medicine Hat | AB | 128 | May 16 | Sept. 22 |
| Peace River | AB | 99 | May 26 | Sept. 3 |
| Red Deer | AB | 106 | May 25 | Sept. 9 |
| Abbotsford | BC | 177 | Apr. 24 | Oct. 18 |
| Chilliwack | BC | 216 | Apr. 6 | Nov. 9 |
| Dawson Creek | BC | 84 | Jun. 5 | Aug. 29 |
| Kamloops | BC | 156 | May 1 | Oct. 5 |
| Kelowna | BC | 156 | May 4 | Oct. 8 |
| Nanaimo | BC | 171 | Apr. 28 | Oct. 17 |
| Nelson | BC | 159 | May 4 | Oct. 13 |
| Port Alberni | BC | 159 | May 8 | Oct. 15 |
| Prince George | BC | 91 | Jun. 4 | Sept. 3 |
| Prince Rupert | BC | 156 | May 9 | Oct. 13 |
| Vancouver | BC | 221 | Mar. 28 | Nov. 5 |
| Victoria | BC | 200 | Apr. 19 | Nov. 5 |
| Brandon | MB | 105 | May 27 | Sept. 10 |
| Lynn Lake | MB | 89 | Jun. 8 | Sept. 6 |
| The Pas | MB | 112 | May 27 | Sept. 17 |
| Thompson | MB | 61 | Jun. 15 | Aug. 16 |
| Winnipeg | MB | 119 | May 25 | Sept. 22 |
| Bathurst | NB | 129 | May 19 | Sept. 26 |
| Edmundston | NB | 112 | May 28 | Sept. 18 |
| Fredericton | NB | 124 | May 20 | Sept. 22 |
| Moncton | NB | 125 | May 24 | Sept. 27 |
| Saint John | NB | 139 | May 18 | Oct. 4 |
| Corner Brook | NF | 142 | May 22 | Oct. 12 |
| Gander | NF | 123 | Jun. 3 | Oct. 5 |
| Grand Falls | NF | 115 | Jun. 2 | Sept. 26 |
| St. John's | NF | 131 | Jun. 2 | Oct. 12 |
| Halifax | NS | 166 | May 6 | Oct. 20 |
| Kentville | NS | 141 | May 16 | Oct. 5 |
| Sydney | NS | 141 | May 24 | Oct. 13 |
| Truro | NS | 113 | May 30 | Sept. 21 |
| Yarmouth | NS | 169 | May 1 | Oct. 18 |
| Aklavik | NT | 76 | Jun. 13 | Aug. 31 |
| Fort Simpson | NT | 81 | Jun. 3 | Aug. 24 |
| Yellowknife | NT | 110 | May 27 | Sept. 15 |
| Barrie | ON | 112 | May 26 | Sept. 16 |
| Hamilton | ON | 168 | Apr. 29 | Oct. 15 |
| Kapuskasing | ON | 87 | Jun. 12 | Sept. 8 |
| Kingston | ON | 160 | May 2 | Oct. 10 |
| Kitchener | ON | 139 | May 11 | Sept. 29 |
| London | ON | 151 | May 9 | Oct. 8 |
| Ottawa | ON | 151 | May 6 | Oct. 5 |
| Owen Sound | ON | 155 | May 12 | Oct. 15 |
| Peterborough | ON | 124 | May 18 | Sept. 20 |
| Sudbury | ON | 130 | May 17 | Sept. 25 |
| Thunder Bay | ON | 105 | Jun. 1 | Sept. 15 |
| Timmins | ON | 89 | Jun. 8 | Sept. 6 |
| Toronto | ON | 149 | May 9 | Oct. 6 |
| Windsor | ON | 179 | Apr. 25 | Oct. 22 |
| Charlottetown | PE | 150 | May 17 | Oct. 14 |
| Summerside | PE | 162 | May 9 | Oct. 19 |
| Tignish | PE | 138 | May 23 | Oct. 9 |
| Baie Comeau | QC | 109 | May 28 | Sept. 15 |
| Chicoutimi | QC | 133 | May 17 | Sept. 30 |
| Montreal | QC | 156 | May 3 | Oct. 7 |
| Quebec | QC | 139 | May 13 | Sept. 29 |
| Rimouski | QC | 139 | May 13 | Sept. 30 |
| Sherbrooke | QC | 100 | Jun. 1 | Sept. 10 |
| Tadoussac | QC | 141 | May 13 | Oct. 2 |
| Thetford Mines | QC | 106 | May 28 | Sept. 14 |
| Trois-Rivieres | QC | 124 | May 19 | Sept. 23 |
| Moose Jaw | SK | 120 | May 20 | Sept. 18 |
| North Battleford | SK | 120 | May 19 | Sept. 17 |
| Prince Albert | SK | 93 | Jun. 2 | Sept. 4 |
| Regina | SK | 111 | May 21 | Sept. 10 |
| Saskatoon | SK | 116 | May 21 | Sept. 15 |
| Weyburn | SK | 112 | May 22 | Sept. 12 |
| Yorkton | SK | 110 | May 23 | Sept. 11 |
| Dawson | YT | 62 | Jun. 13 | Aug. 17 |
| Watson Lake | YT | 91 | Jun. 2 | Sept. 4 |
For more cities, click here.
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Comments
The Surroundings Canada fill
The Surroundings Canada fill at the airfield oftentimes do not discover the rectify conditions on their website, ie the clouds versus sun etc. We bonk far author rime freed days than what substance they fuck supplied you with.
hardwood floor stair
nice information.
nice information.
Hello, all, Environment
Hello, all, Environment Canada provides for 5 locations in Kelowna. We adjusted the date for a longer growing period. Thank you for commenting.
I think the Kelowna and
I think the Kelowna and Nelson data might be reversed. Kelowna has a much longer growing season and definitely doesn't have first frost by Sept 20th.
The dates given are courtesy
The dates given are courtesy of Environment Canada, and they are the normal averages for a light freeze. As stated above, local weather and topography may cause considerable variations.
The Environment Canada people
The Environment Canada people at the airport frequently do not identify the correct conditions on their website, ie the clouds versus sun etc. We have far more frost free days than what information they have supplied you with. Thanks!
Hello! I would like to see
Hello!
I would like to see some Eastern Alberta locations for frost and other weather reports.
Thank You
Ken