Frost Chart for United States - Store - Picket Fence Greenhouse/ Gardens

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Frost Chart for United States

 

Find average frost dates for your last spring frost and first fall frost.

If you're a farmer or gardener, get planting dates by zip code, based on your average last spring frost date here.

Dates given are normal averages for a light freeze or frost (32°F); 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, with the following commonly accepted categories:

Light freeze:

29°F to 32°F—tender plants killed, with little destructive effect on other vegetation.

Moderate freeze:

25°F to 28°F—widely destructive effect on most vegetation, with heavy damage to fruit blossoms and tender and semi-hardy plants.

Severe freeze:

24°F and colder—damage to most plants.

Frost Chart

Below are U.S. cities. Or, seeCanadian cities.

 

City State

Growing
Season
(Days)

Last Frost
Spring
First Frost
Fall
Mobile AL 273 Feb. 28 Nov. 29
Juneau AK 148 May 8 Oct. 4
Phoenix AZ * * *
Tucson AZ 324 Jan. 19 Dec. 18
Pine Bluff AR 240 Mar. 16 Nov. 12
Eureka CA 323 Jan. 27 Dec. 16
Sacramento CA 296 Feb. 10 Dec. 4
San Francisco CA * * *
Denver CO 157 Apr. 30 Oct. 4
Hartford CT 166 Apr. 26 Oct. 9
Wilmington DE 202 Apr. 10 Oct. 30
Miami FL * * *
Tampa FL 338 Jan. 28 Jan. 3
Athens GA 227 Mar. 24 Nov. 7
Savannah GA 268 Mar. 1 Nov. 25
Boise ID 147 May 10 Oct. 6
Chicago IL 187 Apr. 20 Oct. 24
Springfield IL 182 Apr. 13 Oct. 13
Indianapolis IN 181 Apr. 17 Oct. 16
South Bend IN 175 Apr. 26 Oct. 19
Atlantic IA 148 May 2 Sept. 28
Cedar Rapids IA 163 Apr. 25 Oct. 6
Topeka KS 174 Apr. 19 Oct. 11
Lexington KY 192 Apr. 15 Oct. 25
Monroe LA 256 Mar. 3 Nov. 15
New Orleans LA 300 Feb. 12 Dec. 11
Portland ME 156 May 2 Oct. 6
Baltimore MD 200 Apr. 11 Oct. 29
Worcester MA 170 Apr. 26 Oct. 14
Lansing MI 145 May 10 Oct. 3
Marquette MI 154 May 11 Oct. 13
Duluth MN 124 May 21 Sept. 23
Willmar MN 154 Apr. 30 Oct. 1
Columbus MS 248 Mar. 13 Nov. 16
Vicksburg MS 240 Mar. 20 Nov. 16
Jefferson City MO 188 Apr. 13 Oct. 18
Fort Peck MT 141 May 8 Sept. 26
Helena MT 121 May 19 Sept. 18
Blair NE 167 Apr. 25 Oct. 10
North Platte NE 137 May 9 Sept. 24
Las Vegas NV 283 Feb. 16 Nov. 27
Concord NH 124 May 20 Sept. 21
Newark NJ 217 Apr. 3 Nov. 7
Carlsbad NM 215 Mar. 31 Nov. 2
Los Alamos NM 149 May 11 Oct. 8
Albany NY 153 May 2 Oct. 3
Syracuse NY 168 Apr. 28 Oct. 13
Fayetteville NC 222 Mar. 28 Nov. 5
Bismarck ND 129 May 14 Sept. 21
Akron OH 192 Apr. 18 Oct. 28
Cincinnati OH 192 Apr. 13 Oct. 23
Lawton OK 223 Mar. 29 Nov. 7
Tulsa OK 225 Mar. 27 Nov. 7
Pendleton OR 187 Apr. 13 Oct. 18
Portland OR 236 Mar. 23 Nov. 15
Franklin PA 164 May 6 Oct. 17
Williamsport PA 168 Apr. 30 Oct. 15
Kingston RI 147 May 8 Oct. 3
Charleston SC 260 Mar. 9 Nov. 25
Columbia SC 214 Apr. 1 Nov. 1
Rapid City SD 140 May 9 Sept. 27
Memphis TN 235 Mar. 22 Nov. 13
Nashville TN 204 Apr. 6 Oct. 28
Amarillo TX 185 Apr. 18 Oct. 20
Denton TX 243 Mar. 18 Nov. 16
San Antonio TX 270 Feb. 28 Nov. 25
Cedar City UT 133 May 21 Oct. 1
Spanish Fork UT 167 May 1 Oct. 16
Burlington VT 147 May 8 Oct. 3
Norfolk VA 247 Mar. 20 Nov. 23
Richmond VA 206 Apr. 6 Oct. 30
Seattle WA 251 Mar. 10 Nov. 17
Spokane WA 153 May 2 Oct. 3
Parkersburg WV 183 Apr. 21 Oct. 22
Green Bay WI 150 May 6 Oct. 4
Janesville WI 164 Apr. 28 Oct. 10
Casper WY 120 May 22 Sept. 19
* Frosts do not occur every year.

This was taken from http://www.almanac.com/content/frost-chart-united-states

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