NOAA climate normals 1991–2020
U.S. Frost Dates by Weather Station
Last spring and first fall frost dates for 2088 U.S. weather stations, from NOAA climate normals 1991–2020. Every date comes with its probability: when a frost is unlikely, typical and likely.
- Every datewith its odds10%, 50% and 90% chance of frost
- DataNOAA 1991–2020at least 25 years of records per station
- Pickthe nearest stationzones alone are weeks off
- Seethe whole seasonfrost-free days and fall frost too
Find your state
- Alabama (33)
- Arizona (29)
- Arkansas (51)
- California (29)
- Colorado (65)
- Connecticut (7)
- Delaware (3)
- Florida (7)
- Georgia (25)
- Idaho (34)
- Illinois (67)
- Indiana (51)
- Iowa (100)
- Kansas (74)
- Kentucky (18)
- Louisiana (16)
- Maine (28)
- Maryland (14)
- Massachusetts (19)
- Michigan (60)
- Minnesota (78)
- Mississippi (25)
- Missouri (66)
- Montana (90)
- Nebraska (75)
- Nevada (28)
- New Hampshire (16)
- New Jersey (13)
- New Mexico (42)
- New York (58)
- North Carolina (51)
- North Dakota (50)
- Ohio (56)
- Oklahoma (21)
- Oregon (48)
- Pennsylvania (55)
- Rhode Island (3)
- South Carolina (26)
- South Dakota (72)
- Tennessee (60)
- Texas (95)
- Utah (53)
- Vermont (10)
- Virginia (49)
- Washington (65)
- West Virginia (35)
- Wisconsin (78)
- Wyoming (40)
Browse by hardiness zone
- Zone 3b (30)
- Zone 4a (106)
- Zone 4b (172)
- Zone 5a (244)
- Zone 5b (230)
- Zone 6a (272)
- Zone 6b (261)
- Zone 7a (231)
- Zone 7b (173)
- Zone 8a (165)
- Zone 8b (158)
- Zone 9a (77)
Zones are zone derived from PRISM 2023 grid at the station location (not the official USDA map).