Frost history / Bountiful-Val Verda, UT
Bountiful-Val Verda, UT: frost dates by year
Last spring and first fall frost at NOAA station USC00420820, 1981 to 2013, measured from daily minimum temperatures.
Elevation 4,540 ft, 40.855, -111.890. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | Apr 20 | Oct 24 |
| Earliest | Mar 11 (2004) | Sep 23 (2007) |
| Latest | May 9 (1993) | Nov 15 (1987) |
| Trend | 0.6 days earlier per decade | 2.9 days earlier per decade |
| Years with data | 30 | 33 |
At 28°F (hard freeze) the median last spring date is Apr 3 and the median first fall date is Nov 3.
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 1 | Oct 16 | Apr 23 | Nov 5 |
| 2012 | Apr 7 | Oct 25 | Apr 7 | Oct 26 |
| 2011 | May 1 | Oct 26 | Apr 5 | Oct 27 |
| 2010 | May 7 | Oct 27 | Apr 9 | Nov 10 |
| 2009 | Apr 17 | Oct 6 | Apr 2 | Oct 28 |
| 2008 | no data | Oct 10 | no data | Oct 22 |
| 2007 | Apr 20 | Sep 23 | Mar 6 | Nov 14 |
| 2006 | Apr 21 | Oct 18 | Apr 19 | Oct 31 |
| 2005 | Apr 5 | Nov 13 | Mar 31 | Nov 15 |
| 2004 | Mar 11 | Oct 31 | Mar 5 | Nov 1 |
| 2003 | Apr 8 | Oct 26 | Apr 4 | Oct 31 |
| 2002 | May 8 | Oct 12 | Mar 19 | Oct 31 |
| 2001 | Apr 13 | Oct 12 | Apr 10 | Nov 24 |
| 2000 | Mar 31 | Nov 2 | Mar 21 | Nov 3 |
| 1999 | Apr 12 | Oct 16 | Apr 11 | Nov 22 |
| 1998 | Apr 18 | Nov 3 | Mar 18 | Nov 7 |
| 1997 | May 3 | Oct 24 | Apr 13 | Nov 15 |
| 1996 | Apr 28 | Oct 17 | Apr 23 | Oct 17 |
| 1995 | no data | Oct 22 | no data | Nov 2 |
| 1994 | Apr 10 | Oct 15 | Mar 24 | Oct 30 |
| 1993 | May 9 | Oct 31 | Mar 12 | Nov 5 |
| 1992 | Mar 18 | Nov 3 | Feb 19 | Nov 4 |
| 1991 | Apr 29 | Oct 24 | Apr 28 | Oct 28 |
| 1990 | Apr 30 | Oct 17 | Apr 29 | Nov 6 |
| 1989 | Mar 21 | Oct 26 | Mar 6 | Oct 29 |
| 1988 | May 3 | Nov 14 | Mar 30 | Nov 15 |
| 1987 | Apr 20 | Nov 15 | Mar 30 | Nov 15 |
| 1986 | Apr 27 | Oct 12 | Feb 13 | Nov 2 |
| 1985 | Apr 20 | Oct 22 | Mar 30 | Nov 10 |
| 1984 | Apr 28 | Oct 15 | Apr 27 | Oct 22 |
| 1983 | Apr 15 | Nov 8 | Apr 7 | Nov 9 |
| 1982 | Apr 21 | Oct 8 | Apr 20 | Nov 3 |
| 1981 | no data | Oct 30 | no data | Nov 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.