Frost history / Buhl #2, ID
Buhl #2, ID: frost dates by year
Last spring and first fall frost at NOAA station USC00101220, 1978 to 2013, measured from daily minimum temperatures.
Elevation 3,800 ft, 42.601, -114.745. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | May 6 | Oct 5 |
| Earliest | Apr 7 (2012) | Sep 7 (1992) |
| Latest | Jun 7 (1995) | Oct 28 (1988) |
| Trend | 3.9 days earlier per decade | 2.7 days later per decade |
| Years with data | 25 | 30 |
At 28°F (hard freeze) the median last spring date is Apr 14 and the median first fall date is Oct 25.
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 | Apr 30 | Oct 3 | Apr 22 | Oct 8 |
| 2012 | Apr 7 | Oct 3 | Apr 6 | Oct 5 |
| 2011 | Apr 30 | Oct 24 | Apr 22 | Oct 25 |
| 2010 | May 6 | Oct 26 | May 6 | Nov 8 |
| 2009 | May 12 | Oct 1 | Apr 3 | Oct 27 |
| 2007 | May 3 | Oct 17 | Apr 19 | Nov 6 |
| 2006 | no data | Oct 20 | no data | Oct 21 |
| 2005 | Apr 28 | Oct 4 | Apr 14 | Nov 9 |
| 2004 | Apr 9 | Oct 24 | Mar 2 | Oct 31 |
| 2003 | no data | Oct 10 | no data | Oct 30 |
| 2001 | May 2 | no data | Apr 15 | no data |
| 2000 | May 12 | Sep 24 | Mar 31 | Nov 3 |
| 1999 | May 11 | Sep 28 | Apr 12 | Oct 16 |
| 1998 | Apr 19 | Oct 11 | Apr 18 | Oct 31 |
| 1997 | no data | Oct 8 | no data | Oct 25 |
| 1996 | no data | Sep 23 | no data | Sep 23 |
| 1995 | Jun 7 | Sep 22 | Apr 17 | Oct 13 |
| 1994 | Apr 29 | Oct 15 | Apr 8 | Oct 29 |
| 1993 | May 8 | Sep 22 | Mar 14 | Oct 26 |
| 1992 | Apr 25 | Sep 7 | Apr 8 | Nov 3 |
| 1991 | May 12 | Sep 22 | May 1 | Oct 28 |
| 1990 | May 8 | Oct 7 | Mar 29 | Oct 7 |
| 1989 | May 19 | Oct 16 | Apr 10 | Oct 16 |
| 1988 | May 3 | Oct 28 | Apr 10 | Oct 31 |
| 1987 | no data | Oct 10 | no data | Oct 20 |
| 1986 | May 23 | Sep 21 | Apr 13 | Oct 11 |
| 1985 | May 15 | no data | Apr 26 | no data |
| 1984 | no data | Sep 25 | no data | Oct 15 |
| 1981 | May 10 | Oct 4 | Apr 14 | Oct 4 |
| 1980 | Apr 16 | Oct 17 | Apr 16 | Oct 23 |
| 1979 | May 8 | Oct 22 | Apr 20 | Oct 30 |
| 1978 | no data | Sep 18 | no data | Oct 23 |
"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.