Last Frost Day

Frost history by station

See the actual last spring and first fall frost dates for each year, not just the averages. Built from NOAA daily temperature records for 6,135 stations, 1951 to 2025.

Runs in your browser. The ZIP code you enter is not sent to us or to our analytics.

Browse stations by state

50 states and territories. Open a state to see its stations.

AK (88)
AL (109)
AR (110)
AZ (143)
CA (275)
CO (181)
CT (22)
DE (7)
FL (87)
GA (118)
HI (1)
IA (150)
ID (112)
IL (164)
IN (114)
KS (167)
KY (89)
LA (84)
MA (60)
MD (42)
ME (75)
MI (185)
MN (166)
MO (166)
MS (92)
MT (179)
NC (169)
ND (115)
NE (164)
NH (45)
NJ (48)
NM (144)
NV (68)
NY (168)
OH (124)
OK (184)
OR (151)
PA (152)
RI (10)
SC (94)
SD (145)
TN (139)
TX (410)
UT (128)
VA (118)
VT (41)
WA (142)
WI (199)
WV (95)
WY (96)

How the dates are worked out

For each year, the last spring frost is the last day from January through July with a minimum temperature of 32°F or lower. The first fall frost is the first such day from August through December. We do the same at 28°F for a hard freeze. Seasons missing more than 10% of their daily readings are marked as no data. The full rules are on the methodology page.

The ZIP lookup shows NOAA's 1991–2020 frost probabilities for the same stations. This page shows the individual years behind numbers like those.