Knob Lick 4S, KY: frost dates by year

Last spring and first fall frost at NOAA station USC00154449, 2010 to 2025, measured from daily minimum temperatures.

Elevation 1,020 ft, 37.024, -85.699. Download the data (JSON), NOAA daily records

Summary at 32°F

	Last spring frost	First fall frost
Median	Apr 10	Nov 1
Earliest	Mar 19 (2023)	Oct 16 (2024)
Latest	May 9 (2020)	Nov 21 (2015)
Trend	2.3 days later per decade	4.8 days earlier per decade
Years with data	14	16

At 28°F (hard freeze) the median last spring date is Mar 21 and the median first fall date is Nov 10.

The trend is a straight-line fit through the years with a freeze. A positive spring trend means the last frost now comes later. Short or patchy records give noisy trends.

Chart

Last spring frost (32°F)

First fall frost (32°F)

Dots are single years. The gray line is the median, the green line the fitted trend.

Year by year

Year	Last spring 32°F	First fall 32°F	Last spring 28°F	First fall 28°F
2025	Apr 9	Nov 10	Mar 21	Nov 10
2024	Mar 25	Oct 16	Mar 20	Nov 29
2023	Mar 19	Oct 31	Mar 19	Nov 1
2022	Apr 20	Oct 19	Mar 28	Nov 14
2021	Apr 22	Nov 3	Apr 2	Nov 13
2020	May 9	Nov 2	Mar 7	Nov 2
2019	no data	Nov 1	no data	Nov 1
2018	Apr 18	Oct 21	Apr 8	Nov 10
2017	Mar 24	Oct 30	Mar 17	Nov 11
2016	Apr 10	Nov 20	Mar 3	Nov 20
2015	Mar 31	Nov 21	Mar 31	Nov 22
2014	Apr 16	Nov 2	Apr 16	Nov 2
2013	Apr 3	Oct 25	Mar 28	Oct 25
2012	Apr 12	Nov 1	Mar 10	Nov 13
2011	Mar 27	Oct 29	Feb 24	Nov 11
2010	no data	Nov 6	no data	Nov 6

"none" means the station recorded no freeze at that threshold in that half of the year. "no data" means more than 10% of the season's daily readings were missing. Years with no usable data are left out. See the methodology for the rules, and the ZIP lookup for 1991 to 2020 frost probabilities.