Frost history / Shelby Bottoms Nature, TN

Shelby Bottoms Nature, TN: frost dates by year

Last spring and first fall frost at NOAA station USC00408238, 2009 to 2025, measured from daily minimum temperatures.

Elevation 405 ft, 36.166, -86.725. Download the data (JSON), NOAA daily records

Summary at 32°F

	Last spring frost	First fall frost
Median	Apr 11	Oct 31
Earliest	Mar 11 (2011)	Oct 18 (2022)
Latest	Apr 24 (2023)	Nov 10 (2025)
Trend	11.4 days later per decade	4.0 days later per decade
Years with data	12	13

At 28°F (hard freeze) the median last spring date is Mar 24 and the median first fall date is Nov 6.

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
2023	Apr 24	no data	Mar 21	no data
2022	Apr 10	Oct 18	Mar 13	Oct 20
2021	Apr 22	Nov 4	Apr 3	Nov 5
2020	no data	Nov 2	no data	Nov 2
2019	no data	Nov 1	no data	Nov 1
2018	Apr 20	Oct 21	Apr 8	Nov 10
2017	Apr 7	Oct 30	Apr 7	Nov 11
2016	Apr 3	Nov 10	Apr 3	Nov 10
2014	Apr 16	Nov 2	Apr 16	Nov 2
2013	Apr 20	Oct 25	Mar 27	Oct 25
2012	Apr 12	Oct 31	Feb 20	Nov 13
2011	Mar 11	Oct 22	Feb 26	Nov 11
2010	no data	Oct 29	no data	Nov 6
2009	Mar 31	no data	Mar 21	no data

"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.