Frost history / Kooskia 5 Sse, ID
Kooskia 5 Sse, ID: frost dates by year
Last spring and first fall frost at NOAA station USC00105013, 1990 to 2005, measured from daily minimum temperatures.
Elevation 2,330 ft, 46.071, -115.934. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | May 6 | Oct 1 |
| Earliest | Apr 25 (1998) | Aug 24 (1992) |
| Latest | May 14 (1995) | Oct 24 (1994) |
| Trend | 2.7 days earlier per decade | 10.7 days earlier per decade |
| Years with data | 11 | 10 |
At 28°F (hard freeze) the median last spring date is Apr 8 and the median first fall date is Oct 17.
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 |
|---|---|---|---|---|
| 2005 | May 2 | no data | Apr 14 | no data |
| 2002 | no data | Aug 27 | no data | Sep 9 |
| 2001 | May 6 | no data | Apr 5 | no data |
| 2000 | May 6 | no data | Mar 24 | no data |
| 1999 | May 11 | Sep 28 | May 8 | Oct 16 |
| 1998 | Apr 25 | Oct 11 | Apr 13 | Oct 17 |
| 1997 | May 2 | Oct 8 | Apr 12 | Oct 25 |
| 1996 | no data | Sep 23 | no data | Oct 17 |
| 1995 | May 14 | no data | Apr 18 | no data |
| 1994 | Apr 29 | Oct 24 | Apr 8 | Oct 29 |
| 1993 | no data | Sep 21 | no data | Sep 22 |
| 1992 | May 12 | Aug 24 | Apr 7 | Nov 10 |
| 1991 | May 3 | Oct 4 | Mar 27 | Oct 18 |
| 1990 | May 8 | Oct 7 | Mar 27 | Oct 7 |
"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.