NOAA 1991–2020 Normals · USDA Hardiness Zones
Frost Dates by ZIP Code
18,659 ZIP codes with the chance of frost by date, first and last frost at every probability NOAA publishes, weather by month and the usual first and last snow.
Every figure comes from the nearest NOAA station's 1991–2020 normals. How the dates are built and how to read them.
Tools
Frost risk by dateThe chance of another frost after a planting date, or of the first frost before a harvest date, for any ZIP code.Compare two placesFrost dates, freeze-free season and growing degree days of two ZIP codes side by side.Hardiness zone by ZIPThe 2023 USDA zone and its temperature range for any ZIP code, with the usual frost dates there.
Guides
Browse by hardiness zone
- Zone 1a(5)
- Zone 1b(11)
- Zone 2a(27)
- Zone 2b(17)
- Zone 3a(23)
- Zone 3b(230)
- Zone 4a(814)
- Zone 4b(1,284)
- Zone 5a(2,426)
- Zone 5b(2,880)
- Zone 6a(5,187)
- Zone 6b(5,271)
- Zone 7a(4,877)
- Zone 7b(3,855)
- Zone 8a(3,430)
- Zone 8b(3,379)
- Zone 9a(2,199)
- Zone 9b(2,085)
- Zone 10a(1,234)
- Zone 10b(752)
- Zone 11a(205)
- Zone 11b(16)
- Zone 12a(30)
- Zone 12b(137)
- Zone 13a(102)
- Zone 13b(26)
Hardiness zone and temperature range: USDA Plant Hardiness Zone Map 2023 (USDA-ARS, Oregon State University), ZIP-code listing, unchanged.
Largest places
- 77494Katy · 9a
- 08701Lakewood · 7a
- 78660Pflugerville · 9a
- 77433Cypress · 9a
- 60629Chicago · 6a
- 11368Corona · 7b
- 11208Brooklyn · 7b
- 79936El Paso · 8b
- 92336Fontana · 10a
- 90011Los Angeles · 10b
- 37013Antioch · 7b
- 90650Norwalk · 10b
- 30044Lawrenceville · 8a
- 11226Brooklyn · 7b
- 94565Pittsburg · 9b
- 91331Pacoima · 10a
- 77573League City · 9b
- 79938El Paso · 8b
- 10467Bronx · 7b
- 90044Los Angeles · 10b
- 78130New Braunfels · 9a
- 75052Grand Prairie · 8b
- 90805Long Beach · 10b
- 10314Staten Island · 7b
- 91342Sylmar · 10a
- 00926San Juan · 13a
- 10025New York · 7b
- 34787Winter Garden · 9b
- 77479Sugar Land · 9b
- 60618Chicago · 6a
- 78245San Antonio · 9a
- 77584Pearland · 9b
- 92683Westminster · 10a
- 30043Lawrenceville · 8a
- 92503Riverside · 10a
- 93307Bakersfield · 9b
- 92345Hesperia · 8b
- 78521Brownsville · 10a
- 78666San Marcos · 9a
- 85142Queen Creek · 9b
Coverage by state
- California(1,292)
- Texas(1,275)
- New York(1,052)
- Pennsylvania(950)
- Florida(881)
- Ohio(786)
- Michigan(689)
- Illinois(671)
- North Carolina(595)
- Georgia(537)
- Virginia(514)
- New Jersey(508)
- Wisconsin(484)
- Indiana(462)
- Missouri(442)
- Tennessee(441)
- Massachusetts(424)
- Alabama(417)
- Minnesota(410)
- Washington(364)
- Kentucky(332)
- Louisiana(321)
- South Carolina(311)
- Maryland(310)
- Oklahoma(298)
- Arizona(291)
- Colorado(277)
- Iowa(277)
- Mississippi(258)
- Arkansas(244)
- Kansas(238)
- Oregon(235)
- Connecticut(230)
- West Virginia(180)
- Maine(163)
- New Hampshire(151)
- Nebraska(142)
- Utah(138)
- New Mexico(128)
- Puerto Rico(121)
- Idaho(111)
- Nevada(109)
- Montana(92)
- Vermont(77)
- South Dakota(70)
- Hawaii(67)
- Rhode Island(62)
- Delaware(50)
- Alaska(49)
- North Dakota(45)
- Wyoming(41)
- District of Columbia(22)