Frost history / Turpin 4 Sse, OK
Turpin 4 Sse, OK: frost dates by year
Last spring and first fall frost at NOAA station USC00349017, 1982 to 2013, measured from daily minimum temperatures.
Elevation 2,705 ft, 36.814, -100.864. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | Apr 18 | Oct 19 |
| Earliest | Mar 22 (2012) | Sep 21 (1983) |
| Latest | May 5 (2013) | Nov 9 (1987) |
| Trend | 0.8 days earlier per decade | 6.4 days later per decade |
| Years with data | 18 | 16 |
At 28°F (hard freeze) the median last spring date is Apr 6 and the median first fall date is Nov 2.
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 |
|---|---|---|---|---|
| 2013 | May 5 | no data | May 5 | no data |
| 2012 | Mar 22 | Oct 27 | Mar 11 | Oct 27 |
| 2011 | May 4 | Oct 28 | Apr 5 | Nov 3 |
| 2010 | Apr 9 | Oct 28 | Apr 3 | Nov 5 |
| 2009 | Apr 8 | no data | Apr 8 | no data |
| 2007 | Apr 17 | Oct 19 | Mar 6 | Nov 1 |
| 2006 | no data | Oct 22 | no data | Nov 1 |
| 1996 | Apr 23 | no data | Apr 15 | no data |
| 1995 | Apr 28 | no data | Apr 12 | no data |
| 1994 | May 1 | Nov 5 | Apr 7 | Nov 5 |
| 1993 | no data | Oct 10 | no data | Oct 27 |
| 1992 | Apr 3 | no data | Apr 3 | no data |
| 1991 | May 1 | Oct 5 | Mar 15 | Oct 29 |
| 1990 | Apr 12 | Oct 18 | Mar 27 | Nov 5 |
| 1989 | Apr 11 | Oct 18 | Apr 11 | Oct 18 |
| 1988 | Apr 23 | Oct 28 | Mar 25 | Oct 28 |
| 1987 | no data | Nov 9 | no data | Nov 9 |
| 1986 | Apr 15 | no data | Apr 15 | no data |
| 1985 | Apr 5 | Sep 30 | Mar 31 | Nov 2 |
| 1984 | Apr 30 | Sep 29 | Apr 27 | Nov 11 |
| 1983 | Apr 19 | Sep 21 | Apr 15 | Nov 10 |
| 1982 | no data | Oct 11 | no data | Oct 20 |
"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.