Frost history / Orem Trtmt Plt, UT
Orem Trtmt Plt, UT: frost dates by year
Last spring and first fall frost at NOAA station USC00426538, 1982 to 2009, measured from daily minimum temperatures.
Elevation 4,510 ft, 40.277, -111.737. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | Apr 21 | Oct 16 |
| Earliest | Mar 20 (1992) | Sep 28 (1999) |
| Latest | May 11 (1999) | Nov 15 (1997) |
| Trend | 1.9 days earlier per decade | 0.6 days earlier per decade |
| Years with data | 23 | 26 |
At 28°F (hard freeze) the median last spring date is Mar 31 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 |
|---|---|---|---|---|
| 2009 | Apr 27 | Oct 6 | Apr 1 | Oct 26 |
| 2008 | May 2 | Oct 12 | Apr 16 | Nov 6 |
| 2007 | Apr 11 | Sep 29 | Mar 7 | Nov 14 |
| 2006 | Apr 19 | Oct 18 | Mar 16 | Oct 31 |
| 2005 | Apr 17 | Nov 13 | Mar 31 | Nov 15 |
| 2004 | Apr 21 | Nov 1 | Mar 7 | Nov 1 |
| 2003 | Apr 23 | Oct 14 | Apr 4 | Nov 6 |
| 2002 | May 8 | Oct 13 | Mar 19 | Nov 1 |
| 2001 | Apr 15 | Oct 10 | Apr 9 | Nov 24 |
| 2000 | Apr 1 | Nov 2 | Mar 20 | Nov 3 |
| 1999 | May 11 | Sep 28 | Apr 3 | Nov 19 |
| 1998 | no data | Nov 9 | no data | Dec 5 |
| 1997 | Apr 12 | Nov 15 | Mar 5 | Nov 15 |
| 1996 | Apr 14 | Nov 6 | Apr 10 | Nov 6 |
| 1995 | no data | Oct 23 | no data | Nov 1 |
| 1992 | Mar 20 | Oct 14 | Feb 18 | Nov 4 |
| 1991 | Apr 28 | Oct 24 | Apr 13 | Oct 29 |
| 1990 | Apr 30 | Oct 9 | Mar 16 | Oct 12 |
| 1989 | Mar 28 | Oct 17 | Mar 21 | Oct 30 |
| 1988 | May 3 | Nov 12 | Apr 10 | Nov 12 |
| 1987 | Apr 21 | Oct 21 | Apr 13 | Nov 15 |
| 1986 | Apr 27 | Oct 12 | Feb 12 | Nov 7 |
| 1985 | Apr 20 | Sep 29 | Mar 30 | Nov 10 |
| 1984 | May 8 | Oct 15 | May 7 | Oct 22 |
| 1983 | May 11 | Nov 8 | Apr 8 | Nov 9 |
| 1982 | no data | Oct 8 | no data | Oct 19 |
"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.