Frost history / Draper-Point Of Mtn, UT
Draper-Point Of Mtn, UT: frost dates by year
Last spring and first fall frost at NOAA station USC00422235, 1986 to 2008, measured from daily minimum temperatures.
Elevation 4,506 ft, 40.488, -111.900. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | Apr 27 | Oct 17 |
| Earliest | Apr 8 (1994) | Sep 29 (1986) |
| Latest | May 19 (1991) | Nov 7 (1988) |
| Trend | 6.5 days earlier per decade | 3.9 days later per decade |
| Years with data | 12 | 12 |
At 28°F (hard freeze) the median last spring date is Mar 27 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 |
|---|---|---|---|---|
| 2008 | May 2 | no data | Apr 17 | no data |
| 2007 | Apr 11 | Oct 21 | Mar 5 | Nov 15 |
| 2005 | Apr 15 | Oct 5 | Mar 31 | Nov 15 |
| 2004 | Apr 28 | Oct 31 | Mar 4 | Nov 1 |
| 2000 | Apr 8 | Nov 2 | Mar 22 | Nov 3 |
| 1999 | no data | Oct 17 | no data | Oct 17 |
| 1998 | Apr 18 | no data | Mar 20 | no data |
| 1997 | May 2 | Oct 12 | Apr 13 | Oct 13 |
| 1996 | Apr 29 | Oct 17 | Apr 13 | Oct 17 |
| 1994 | Apr 8 | no data | Mar 24 | no data |
| 1991 | May 19 | no data | Apr 13 | no data |
| 1990 | no data | Oct 12 | no data | Oct 17 |
| 1989 | no data | Oct 5 | no data | Oct 17 |
| 1988 | May 6 | Nov 7 | Apr 26 | Nov 15 |
| 1987 | no data | Oct 16 | no data | Nov 11 |
| 1986 | Apr 26 | Sep 29 | Mar 15 | Nov 4 |
"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.