FROSTS AND GROWING SEASONS

Dates given are normal averages for a light freeze; local weather and topography may cause considerable variations. The possibility of frost occurring after the spring dates and before the fall dates is 30 percent. The classification of freeze temperatures is usually based on their effect on plants. Light freeze: 29° to 32°F—tender plants killed. Moderate freeze: 25° to 28°F—widely destructive to most plants. Severe freeze: 24°F and colder—heavy damage to most plants. –dates courtesy of National Centers for Environmental Information

STATE

CITY

GROWING SEASON (DAYS)

LAST

SPRING

FROST

FIRST FALL

FROST

  

CITY

GROWING SEASON (DAYS)

LAST

SPRING

FROST

FIRST FALL

FROST

  

AK

Juneau

168

Apr. 27

Oct. 13

ND

Bismarck

122

May 19

Sept. 19

  

AL

Mobile

267

Mar. 6

Nov. 29

NE

Omaha

160

Apr. 27

Oct. 5

  

AR

Pine Bluff

226

Mar. 26

Nov. 8

NE

North Platte

146

May 6

Sept. 30

  

AZ

Phoenix

340

Jan. 20

Dec. 27

NH

Concord

127

May 19

Sept. 24

  

AZ

Tucson

304

Feb. 5

Dec. 7

NJ

Newark

209

Apr. 8

Nov. 4

  

CA

Eureka

276

Mar. 2

Dec. 4

NM

Carlsbad

209

Apr. 5

Nov. 1

  

CA

Sacramento

277

Feb. 21

Nov. 26

NM

Los Alamos

146

May 10

Oct. 4

  

CO

Denver

153

May 4

Oct. 5

NV

Las Vegas

284

Feb. 15

Nov. 27

  

CO

Grand Junction

162

May 2

Oct. 12

NY

Albany

153

May 4

Oct. 5

  

CT

Hartford

159

May 1

Oct. 8

NY

Syracuse

156

May 4

Oct. 8

  

DE

Wilmington

202

Apr. 12

Nov. 1

OH

Akron

165

May 2

Oct. 15

  

FL

Orlando

336

Jan. 29

Jan. 1

OH

Cincinnati

175

Apr. 23

Oct. 16

  

FL

Tallahassee

224

Mar. 29

Nov. 9

OK

Lawton

211

Apr. 3

Nov. 1

  

GA

Athens

214

Apr. 3

Nov. 4

OK

Tulsa

210

Apr. 4

Nov. 1

  

GA

Savannah

249

Mar. 15

Nov. 20

OR

Pendleton

152

May 2

Oct. 2

  

IA

Atlantic

136

May 8

Sept. 22

OR

Portland

255

Mar. 11

Nov. 22

  

IA

Cedar Rapids

157

Apr. 30

Oct. 5

PA

Franklin

156

May 10

Oct. 14

  

ID

Boise

152

May 7

Oct. 7

PA

Williamsport

164

May 2

Oct. 14

  

IL

Chicago

193

Apr. 18

Oct. 29

RI

Kingston

142

May 12

Oct. 2

  

IL

Springfield

168

Apr. 23

Oct. 9

SC

Charleston

298

Feb. 19

Dec. 15

  

IN

Indianapolis

171

Apr. 25

Oct. 14

SC

Columbia

235

Mar. 23

Nov. 14

  

IN

South Bend

162

May 3

Oct. 13

SD

Rapid City

146

May 7

Oct. 1

  

KS

Topeka

173

Apr. 22

Oct. 13

TN

Memphis

225

Mar. 27

Nov. 8

  

KY

Lexington

183

Apr. 20

Oct. 21

TN

Nashville

198

Apr. 12

Oct. 28

  

LA

Monroe

223

Mar. 24

Nov. 3

TX

Amarillo

179

Apr. 21

Oct. 18

  

LA

New Orleans

297

Feb. 17

Dec. 12

TX

Denton

227

Mar. 27

Nov. 10

  

MA

Worcester

167

Apr. 28

Oct. 13

TX

San Antonio

262

Mar. 5

Nov. 23

  

MD

Baltimore

234

Mar. 27

Nov. 17

UT

Cedar City

122

May 28

Sept. 28

  

ME

Portland

152

May 5

Oct. 5

UT

Spanish Fork

158

May 4

Oct. 10

  

MI

Lansing

147

May 9

Oct. 4

VA

Norfolk

251

Mar. 20

Nov. 27

  

MI

Marquette

155

May 11

Oct. 14

VA

Richmond

202

Apr. 10

Oct. 30

  

MN

Duluth

119

May 25

Sept. 22

VT

Burlington

145

May 10

Oct. 3

  

MN

Willmar

146

May 5

Sept. 29

WA

Seattle

243

Mar. 17

Nov. 16

  

MO

Jefferson City

189

Apr. 14

Oct. 21

WA

Spokane

146

May 10

Oct. 4

  

MS

Columbia

234

Mar. 20

Nov. 10

WI

Green Bay

140

May 11

Sept. 29

  

MS

Tupelo

206

Apr. 5

Oct. 29

WI

Sparta

138

May 12

Sept. 28

  

MT

Fort Peck

129

May 15

Sept. 22

WV

Parkersburg

179

Apr. 23

Oct. 20

  

MT

Helena

123

May 19

Sept. 20

WY

Casper

107

May 31

Sept. 16

  

NC

Fayetteville

208

Apr. 8

Nov. 3

*Frosts do not occur every yeaR

.