Hardiness zone 7a · 231 stations

Zone 7a Frost Dates: Typical Last Frost Apr 18

Summary across 231 NOAA weather stations whose location falls in zone 7a^*. Dates are the typical (50% chance) frost dates of each station; the table shows the spread between stations.

Typical last frostApril 18median station, 50% chance
Typical first fall frostOctober 24median station, 50% chance
Frost-free season188 daysmedian station
Weather stations231dates differ by weeks inside a zone

Typical (50%) frost dates across stations in zone 7a
	25% of stations	Median station	75% of stations
Last frost in spring (32°F)	April 13	April 18	April 26
First frost in fall (32°F)	October 19	October 24	October 27
Frost-free days	175	188	196

Frost dates inside one zone differ by weeks: the zone describes winter cold, not the length of the season. Use the station closest to you.

Stations in zone 7a

Weather stations with their typical (50% chance) frost dates
Station	Zone	Last spring frost (50%)	First fall frost (50%)	Frost-free days
Abingdon, VA	7a	April 21	October 20	182
Allentown, PA	7a	April 20	October 24	184
Amarillo, TX	7a	April 13	October 27	195
Anthony, KS	7a	April 9	October 30	205
Atlantic City (Airport), NJ	7a	April 18	October 29	190
Bardstown, KY	7a	April 13	October 25	195
Barren River Lake, KY	7a	April 12	October 29	198
Betatakin, AZ	7a	May 7	October 15	159
Big Bear Lake, CA	7a	May 27	October 4	131
Big Stone Gap, VA	7a	April 20	October 23	186
Biglerville, PA	7a	April 15	October 27	194
Billings, OK	7a	April 15	October 26	194
Bingham, NM	7a	April 25	October 23	180
Blairsville, GA	7a	April 26	October 19	176
Blanding, UT	7a	April 28	October 21	174
Bluff, UT	7a	April 24	October 13	172
Boone, NC	7a	May 2	October 13	163
Boonville, IN	7a	April 12	October 25	196
Boulder, UT	7a	May 4	October 14	160
Boys Ranch, TX	7a	April 19	October 23	183
Bridgehampton, NY	7a	April 23	October 24	182
Caliente, NV	7a	May 3	October 9	156
Canyon De Chelly, AZ	7a	May 6	October 8	153
Canyonlands-The Needles, UT	7a	April 30	October 11	164
Cape Girardeau, MO	7a	April 5	October 25	201
Capitol Reef National Park, UT	7a	April 18	October 28	192
Carbondale, IL	7a	April 9	October 22	195
Chambersburg, PA	7a	April 18	October 25	188
Chatham, VA	7a	April 22	October 23	183
Chester, CA	7a	May 28	September 28	124
Christiansburg, VA	7a	April 19	October 23	186
Claremore, OK	7a	April 7	October 30	205
Coldwater, KS	7a	April 13	October 27	197
Columbus, KS	7a	April 5	October 31	208
Cottonwood Weir, UT	7a	April 29	October 22	174
Coulee Dam, WA	7a	April 22	October 21	180
Covington, VA	7a	April 27	October 18	172
Crossville, TN	7a	April 16	October 23	189
Crossville Ed & Research, TN	7a	April 19	October 22	185
Cumberland, MD	7a	April 15	October 24	190
Dale Enterprise, VA	7a	April 21	October 23	182
Dalhart, TX	7a	April 21	October 20	181
Dayton, WA	7a	April 28	October 13	168
Dimmitt, TX	7a	April 22	October 23	182
Dunlow, WV	7a	April 13	October 26	197
El Dorado, KS	7a	April 13	October 25	193
Elk, NM	7a	May 7	October 11	155
Emmett, ID	7a	April 30	October 17	168
Emmitsburg, MD	7a	April 22	October 20	179
Enid, OK	7a	April 6	November 1	209
Ephrata, WA	7a	April 22	October 17	175
Erie, PA	7a	April 26	November 4	192
Escalante, UT	7a	May 8	October 10	155
Estell Manor, NJ	7a	April 24	October 22	180
Evansville, IN	7a	April 4	October 29	206
Farmington, NM	7a	April 29	October 15	167
Flemington, NJ	7a	April 24	October 21	179
Fort Scott, KS	7a	April 5	October 28	204
Friona, TX	7a	April 22	October 23	182
Front Royal, VA	7a	April 13	October 28	196
Gage, OK	7a	April 17	October 20	185
Gallipolis, OH	7a	April 18	October 28	192
Gate, OK	7a	April 13	October 28	196
Gathright Dam, VA	7a	April 22	October 21	181
Gilbert, AR	7a	April 14	October 22	189
Girard, KS	7a	April 4	November 1	209
Gran Quivira National Monument, NM	7a	May 2	October 15	164
Grand Junction, CO	7a	April 23	October 20	179
Grand Junction (Walker Field), CO	7a	April 28	October 16	171
Gravette, AR	7a	April 5	October 28	204
Hamburg, PA	7a	April 16	October 25	189
Hart, TX	7a	April 22	October 21	182
Hartford (Brainard Field), CT	7a	April 17	October 26	191
Helena, OK	7a	April 9	October 31	205
Henderson, KY	7a	April 4	October 29	207
Heppner, OR	7a	April 26	October 19	174
Hereford, TX	7a	April 17	October 25	189
Highlands, NC	7a	April 30	October 15	167
Hightstown, NJ	7a	April 25	October 16	173
Hingham, MA	7a	April 25	October 22	177
Hogsett RC Byrd Dam, WV	7a	April 18	October 29	192
Howard, KS	7a	April 17	October 22	186
Hyannis, MA	7a	April 16	October 30	195
Independence, KS	7a	April 5	October 31	208
Indian Mills, NJ	7a	April 28	October 15	169
Jackson, KY	7a	April 6	November 1	208
Jackson, MO	7a	April 7	October 29	202
Jefferson, NC	7a	May 7	October 8	154
Joplin, MO	7a	April 9	October 27	200
Kanab, UT	7a	April 29	October 22	175
Keyser, WV	7a	April 30	October 15	167
Lamar, MO	7a	April 9	October 27	199
Landisville, PA	7a	April 30	October 10	162
Lead Hill, AR	7a	April 15	October 22	189
Lebanon, MO	7a	April 17	October 21	187
Lebanon, PA	7a	April 20	October 25	185
Lebanon, VA	7a	April 25	October 16	173
Lee Vining, CA	7a	May 23	October 9	139
Lewistown, PA	7a	April 21	October 24	185
Lexington, VA	7a	April 23	October 23	181
Logan, WV	7a	April 8	November 2	208
London Locks, WV	7a	April 7	November 4	209
Los Alamos, NM	7a	May 2	October 12	162
Louisa, VA	7a	April 26	October 20	175
Louisville, KY	7a	March 31	November 7	222
Mansfield, MO	7a	April 11	October 26	197
Marblehead, MA	7a	April 25	October 20	176
Marshall, NC	7a	April 28	October 18	173
Marshfield, MO	7a	April 13	October 24	191
Melrose, NM	7a	April 17	October 26	190
Millers, MD	7a	April 19	October 25	188
Millville, NJ	7a	April 24	October 23	181
Monett, MO	7a	April 9	October 26	199
Moro, OR	7a	May 12	October 4	143
Mound Valley, KS	7a	April 15	October 24	192
Mount Vernon, IN	7a	April 7	October 28	202
Mullens, WV	7a	April 24	October 20	178
Mutual, OK	7a	April 19	October 26	188
Natural Bridges National Monument, UT	7a	May 5	October 13	157
Neosho, MO	7a	April 7	October 31	206
Nevada, MO	7a	April 7	October 27	202
New Brunswick, NJ	7a	April 15	October 26	193
New Harmony, UT	7a	May 9	October 11	155
New Holland, PA	7a	April 14	November 1	198
Ozark Beach, MO	7a	April 6	October 31	205
Paducah, KY	7a	April 5	October 28	206
Painesville, OH	7a	April 15	November 9	209
Palisade, CO	7a	April 17	October 26	190
Palmyra, VA	7a	April 23	October 21	180
Parkersburg, WV	7a	April 14	October 30	197
Parsons, KS	7a	April 11	October 26	196
Payette, ID	7a	April 19	October 20	183
Pearisburg, VA	7a	April 27	October 17	171
Pendleton, OR	7a	April 26	October 16	174
Petrified Forest National Park, AZ	7a	May 4	October 16	162
Phoenixville, PA	7a	April 18	October 27	192
Pilot Rock, OR	7a	May 7	October 4	147
Pineville, WV	7a	April 16	October 28	193
Pipe Spring National Monument, AZ	7a	May 1	October 19	168
Pleasant Grove, UT	7a	April 17	October 25	188
Ponca City, OK	7a	April 10	October 27	200
Portales, NM	7a	April 15	October 26	193
Princeton, KY	7a	April 11	October 24	196
Pulaski, VA	7a	April 25	October 17	175
Ragland, NM	7a	April 24	October 21	177
Ralston, OK	7a	April 11	October 24	196
Rochester, MA	7a	April 23	October 21	180
Rosiclare, IL	7a	April 19	October 20	181
Saint Johns, AZ	7a	May 2	October 14	164
Saltville, VA	7a	April 23	October 20	178
San Jon, NM	7a	April 18	October 24	187
Scottsville, KY	7a	April 15	October 25	194
Sedan, KS	7a	April 9	October 27	199
Seligman, AZ	7a	May 10	October 15	154
Shippensburg, PA	7a	April 19	October 24	188
Show Low, AZ	7a	May 5	October 15	162
Silverton, TX	7a	April 13	October 28	197
Smithland Lock and Dam, IL	7a	April 3	October 30	207
Somerset, KY	7a	April 5	October 30	206
South Point, OH	7a	April 16	October 30	196
Spanish Fork, UT	7a	April 25	October 18	174
Sparks, NV	7a	May 1	October 10	160
Springfield, MO	7a	April 9	October 27	199
Springfield, TN	7a	April 9	October 28	201
St. John, WA	7a	April 29	October 4	161
Staunton, VA	7a	April 15	October 27	191
Sumner Lake, NM	7a	April 17	October 28	192
Tahoe City, CA	7a	June 9	September 25	108
Tazewell, TN	7a	April 23	October 19	177
Tonopah, NV	7a	April 30	October 18	169
Tucumcari, NM	7a	April 18	October 25	189
Tulia, TX	7a	April 18	October 26	189
Virginia City, NV	7a	May 12	October 17	155
Walnut Creek, AZ	7a	May 24	October 7	135
Waynesville, NC	7a	April 30	October 14	167
Wellington, KS	7a	April 15	October 29	195
Wenatchee (Pangborn Airport), WA	7a	April 8	October 24	200
Wendover, UT	7a	April 18	October 23	188
Whitman Mission, WA	7a	May 2	October 1	151
Wichita, KS	7a	April 11	October 29	199
Winchester, VA	7a	April 11	October 29	200
Winfield, KS	7a	April 16	October 22	189
Winslow, AZ	7a	April 27	October 18	174
Woodstock, VA	7a	April 24	October 20	177
Wytheville, VA	7a	April 25	October 18	174
Yakima, WA	7a	May 8	October 4	149
Yorktown Heights, NY	7a	April 25	October 19	174
near Bartlesville, OK	7a	April 12	October 21	192
near Blacksburg, VA	7a	April 24	October 19	175
near Boston, MA	7a	April 4	November 9	218
near Bountiful, UT	7a	April 25	October 24	181
near Bowling Green, KY	7a	April 5	October 31	208
near Bridgeport, CT	7a	April 5	November 6	216
near Bridgeport, WA	7a	April 26	October 11	167
near Chanute, KS	7a	April 10	October 28	199
near Charleston, WV	7a	April 16	October 26	192
near Entiat, WA	7a	April 5	October 24	200
near Fayetteville, AR	7a	April 15	October 21	188
near Hidden Spring, ID	7a	May 17	October 12	147
near Huntington, WV	7a	April 14	October 26	195
near Industry, PA	7a	April 28	October 26	178
near Kansas City, MO	7a	April 4	November 2	211
near Lancaster, PA	7a	April 19	October 24	186
near Lexington, KY	7a	April 13	October 28	196
near London, KY	7a	April 15	October 25	192
near Loudoun Valley Estates, VA	7a	April 13	October 26	195
near Martinsburg, WV	7a	April 20	October 22	183
near Metropolis, IL	7a	April 6	October 27	203
near Morgantown, WV	7a	April 23	October 24	182
near Mountain City, TN	7a	April 27	October 14	170
near Muleshoe, TX	7a	April 22	October 20	180
near Oak Hill, VA	7a	April 15	October 24	194
near Oxford, PA	7a	April 26	October 22	179
near Pampa, TX	7a	April 14	October 28	194
near Providence, RI	7a	April 11	October 30	199
near Provo, UT	7a	April 18	October 21	185
near Purchase, NY	7a	April 12	October 31	200
near Sciotodale, OH	7a	April 17	October 25	191
near Shamrock, TX	7a	April 9	October 30	202
near Shepherdsville, KY	7a	April 18	October 25	189
near Stockton, MO	7a	April 6	October 30	207
near Weldon Spring, MO	7a	April 10	October 26	199
near Wheeling, WV	7a	April 18	November 1	196
near Whitfield, PA	7a	April 26	October 19	176
near Winfield, WV	7a	April 18	October 30	193

Sources

* zone derived from PRISM 2023 grid at the station location (not the official USDA map). Source data: PRISM Group, Oregon State University.