Frost history / Morristown Radio Wcrk, TN
Morristown Radio Wcrk, TN: frost dates by year
Last spring and first fall frost at NOAA station USC00406271, 1982 to 2016, measured from daily minimum temperatures.
Elevation 1,344 ft, 36.207, -83.332. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | Apr 18 | Oct 26 |
| Earliest | Mar 31 (1991) | Oct 4 (1987) |
| Latest | May 8 (1989) | Nov 20 (2016) |
| Trend | 4.1 days earlier per decade | 3.7 days later per decade |
| Years with data | 17 | 17 |
At 28°F (hard freeze) the median last spring date is Apr 5 and the median first fall date is Nov 4.
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 |
|---|---|---|---|---|
| 2016 | Apr 11 | Nov 20 | Apr 10 | Nov 21 |
| 2015 | Apr 5 | no data | Mar 29 | no data |
| 2014 | Apr 16 | no data | Apr 16 | no data |
| 2013 | Apr 3 | Oct 24 | Apr 3 | Oct 26 |
| 2012 | no data | Nov 5 | no data | Nov 9 |
| 1995 | Apr 25 | Oct 22 | Mar 12 | Nov 4 |
| 1994 | Apr 8 | Oct 27 | Apr 1 | Nov 23 |
| 1993 | Apr 22 | Oct 23 | Mar 19 | Nov 2 |
| 1992 | Apr 29 | Oct 20 | Apr 5 | Oct 20 |
| 1991 | Mar 31 | Oct 7 | Mar 31 | Nov 3 |
| 1990 | Apr 18 | Oct 26 | Apr 13 | Nov 18 |
| 1989 | May 8 | Nov 4 | Apr 12 | Nov 4 |
| 1988 | Apr 20 | Oct 12 | Mar 17 | Oct 13 |
| 1987 | Apr 10 | Oct 4 | Apr 5 | Oct 22 |
| 1986 | May 4 | Nov 13 | Apr 23 | Nov 13 |
| 1985 | Apr 10 | Nov 8 | Apr 10 | Nov 8 |
| 1984 | Apr 19 | Nov 7 | Mar 31 | Nov 7 |
| 1983 | Apr 25 | Oct 28 | Apr 21 | Nov 5 |
| 1982 | no data | Oct 17 | no data | Oct 26 |
"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.