Frost history / Hagerman 2 Sw, ID
Hagerman 2 Sw, ID: frost dates by year
Last spring and first fall frost at NOAA station USC00103932, 1982 to 2017, measured from daily minimum temperatures.
Elevation 2,897 ft, 42.811, -114.924. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | May 3 | Sep 27 |
| Earliest | Apr 10 (2000) | Aug 25 (1992) |
| Latest | Jun 7 (1995) | Nov 4 (2015) |
| Trend | 0.9 days earlier per decade | 6.0 days later per decade |
| Years with data | 29 | 32 |
At 28°F (hard freeze) the median last spring date is Apr 20 and the median first fall date is Oct 9.
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 |
|---|---|---|---|---|
| 2017 | May 14 | Sep 23 | Apr 16 | Oct 9 |
| 2016 | Apr 18 | Oct 12 | Mar 26 | Oct 12 |
| 2015 | May 1 | Nov 4 | Apr 17 | Nov 7 |
| 2014 | Apr 30 | Oct 22 | Apr 29 | Oct 28 |
| 2013 | May 2 | Oct 4 | May 2 | Oct 4 |
| 2012 | May 7 | Oct 4 | Apr 7 | Oct 4 |
| 2011 | no data | Oct 8 | no data | Oct 25 |
| 2010 | May 25 | Oct 12 | May 7 | Oct 20 |
| 2009 | May 21 | Oct 1 | Apr 27 | Oct 2 |
| 2008 | May 13 | Oct 9 | May 2 | Oct 13 |
| 2007 | May 4 | Sep 25 | Apr 11 | Sep 30 |
| 2006 | May 3 | Sep 17 | May 3 | Oct 18 |
| 2005 | Apr 29 | Sep 25 | Apr 15 | Oct 5 |
| 2004 | Apr 30 | Oct 19 | Apr 10 | Nov 1 |
| 2003 | May 20 | Sep 14 | May 19 | Oct 11 |
| 2002 | May 9 | Sep 22 | May 8 | Oct 12 |
| 2001 | May 3 | Oct 10 | Apr 16 | Oct 10 |
| 2000 | Apr 10 | no data | Apr 8 | no data |
| 1999 | no data | Sep 28 | no data | Sep 28 |
| 1996 | Apr 29 | no data | Apr 28 | no data |
| 1995 | Jun 7 | Sep 22 | Apr 20 | Sep 22 |
| 1994 | Apr 16 | Oct 8 | Apr 8 | Oct 23 |
| 1993 | May 9 | Sep 13 | Apr 20 | Sep 22 |
| 1992 | Apr 24 | Aug 25 | Apr 24 | Oct 7 |
| 1991 | Apr 30 | Sep 22 | Apr 30 | Oct 24 |
| 1990 | May 9 | Oct 7 | Mar 31 | Oct 7 |
| 1989 | Apr 29 | Oct 5 | Apr 26 | Oct 16 |
| 1988 | May 3 | Sep 19 | Apr 11 | Oct 28 |
| 1987 | no data | Sep 17 | no data | Sep 28 |
| 1986 | May 23 | Sep 21 | Apr 30 | Oct 12 |
| 1985 | May 13 | Sep 20 | Apr 20 | Sep 29 |
| 1984 | no data | Sep 25 | no data | Sep 25 |
| 1983 | May 13 | Sep 20 | Apr 26 | Sep 21 |
| 1982 | no data | Oct 2 | no data | Oct 9 |
"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.