How long the frost-free season lasts in each state: PlainClimate analysis of NOAA data, published October 8, 2026

The typical place in Hawaii has the longest frost-free season (a median of 365 days) and the typical place in Alaska the shortest (114). Within a state the range can be wide: Hawaii runs from 365 days in Ewa Beach to 365 in Waimea.

Every state, longest typical season first

Median, shortest and longest NOAA growing season (days) among each state's places
State	Median	Shortest (place, days)	Longest (place, days)	Places
Hawaii	365	Ewa Beach 365	Waimea 365	18
Florida	343	Crestview 237	Key West 365	106
California	292	Truckee 59	Vista 365	219
Louisiana	267	Homer 221	Boothville 357	65
Arizona	243	Bellemont 85	Yuma 365	97
Texas	243	Lipscomb 170	Port Aransas 365	321
Mississippi	238	Hickory Flat 202	Biloxi 301	81
Georgia	236	Blairsville 176	Brunswick 312	101
Alabama	232	Hamilton 198	Dauphin Island 340	80
South Carolina	229	Chesnee 195	Edisto Beach 280	73
Arkansas	224	Fayetteville 188	Stuttgart 250	86
North Carolina	218	Jefferson 154	Ocracoke 293	131
Delaware	212	Greenwood 200	Lewes 231	6
Oklahoma	209	Boise 173	Hugo 244	134
Tennessee	203	Roan Mountain 165	Memphis 244	116
Maryland	203	Oakland 156	Solomons 248	26
Rhode Island	200	Kingston 163	Newport 206	6
Virginia	196	Bland 157	Norfolk 252	81
Missouri	193	Steelville 164	Caruthersville 230	134
Kentucky	192	Shelbyville 161	Eddyville 225	68
New Jersey	190	Sussex 164	Newark 222	33
Illinois	185	Mount Carroll 154	Alton 214	144
Oregon	184	Chemult 23	Brookings 349	105
Kansas	183	Brewster 145	Girard 209	137
Indiana	180	Lakeville 163	Cannelton 218	99
Ohio	179	Danville 157	Sandusky 209	99
Connecticut	177	Falls Village 146	Bridgeport 216	13
Washington	177	Glenwood 72	Port Townsend 274	96
West Virginia	177	Bayard 140	Logan 208	63
Pennsylvania	173	Kane 126	Marcus Hook 230	108
Massachusetts	167	Barre 141	Boston 218	35
New Mexico	167	Red River 77	Alamogordo 251	98
Iowa	164	Sheldon 145	Keokuk 198	132
New York	162	Saranac Lake 97	New York 236	131
Nebraska	159	Harrison 121	Valley 187	137
Michigan	159	Amasa 94	South Haven 201	140
Wisconsin	154	Couderay 100	Milwaukee 192	165
Nevada	152	Lamoille 63	Laughlin 354	55
Minnesota	150	Tower 89	La Crescent 194	129
Maine	149	Houlton 115	Woodland 185	42
New Hampshire	148	Berlin 112	Manchester 180	28
South Dakota	145	Hill City 102	Pickstown 165	100
Colorado	143	Walden 31	Palisade 190	125
Utah	143	Woodruff 59	St. George 239	97
Vermont	143	Plainfield 119	South Hero 174	29
North Dakota	136	Hettinger 115	Hillsboro 158	92
Idaho	131	Stanley 29	Lewiston 200	85
Montana	121	Wisdom 22	Norris 162	141
Wyoming	121	Daniel 19	Basin 164	71
Alaska	114	Utqiaġvik 26	Wrangell 202	85

How this was measured

NOAA's median growing season (the number of days between the last spring and the first autumn night at 32°F or colder, at 50% probability) for every Census place PlainClimate covers, summarized per state as the median, shortest and longest. States with fewer than three such places are left out.

What it cannot tell you

A station measures frost at its thermometer, about five feet up: low ground frosts earlier and later. Places without frost in a typical year (a season of 365 days) are left out of the shortest-longest range.

Source: NOAA NCEI 1991-2020 annual normals (growing-season length).

Every state, longest typical season first

How this was measured

What it cannot tell you

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