Frost history / Lowman, ID
Lowman, ID: frost dates by year
Last spring and first fall frost at NOAA station USC00105414, 1951 to 2004, measured from daily minimum temperatures.
Elevation 3,920 ft, 44.083, -115.619. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | Jun 26 | Aug 31 |
| Earliest | May 24 (1961) | Aug 1 (1987) |
| Latest | Jul 31 (1981) | Sep 30 (1953) |
| Trend | little change (less than half a day per decade) | 0.9 days earlier per decade |
| Years with data | 29 | 28 |
At 28°F (hard freeze) the median last spring date is May 23 and the median first fall date is Sep 13.
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 |
|---|---|---|---|---|
| 2004 | Jun 17 | no data | May 6 | no data |
| 2003 | no data | Sep 13 | no data | Sep 18 |
| 2000 | no data | Aug 21 | no data | Sep 22 |
| 1999 | Jul 5 | no data | May 15 | no data |
| 1998 | May 28 | Sep 20 | Apr 27 | Oct 3 |
| 1997 | Jun 24 | Sep 19 | May 8 | Sep 28 |
| 1996 | Jul 20 | Aug 19 | Jun 19 | Sep 6 |
| 1995 | Jun 7 | Aug 9 | May 14 | Sep 21 |
| 1994 | Jul 4 | Sep 4 | Apr 29 | Sep 11 |
| 1993 | Jul 18 | Aug 25 | May 9 | Aug 25 |
| 1992 | Jun 14 | Aug 23 | May 22 | Aug 24 |
| 1991 | Jun 21 | Aug 12 | Jun 17 | Sep 15 |
| 1990 | Jun 1 | Aug 31 | May 16 | Sep 16 |
| 1989 | Jul 11 | Aug 17 | Jun 21 | Aug 17 |
| 1988 | Jul 8 | Aug 2 | Jun 30 | Aug 2 |
| 1987 | Jul 11 | Aug 1 | Jun 2 | Aug 1 |
| 1986 | Jul 17 | Aug 31 | May 23 | Sep 23 |
| 1985 | Jun 26 | no data | May 13 | no data |
| 1984 | Jun 10 | Sep 12 | Jun 1 | Sep 12 |
| 1983 | Jun 25 | Sep 6 | May 19 | Sep 10 |
| 1982 | Jun 9 | Sep 5 | May 20 | Sep 11 |
| 1981 | Jul 31 | Aug 27 | Jul 8 | Sep 20 |
| 1980 | no data | Aug 4 | no data | Aug 29 |
| 1979 | Jun 16 | no data | Jun 9 | no data |
| 1978 | Jun 26 | Sep 17 | Jun 17 | Sep 17 |
| 1977 | Jul 7 | Sep 9 | May 30 | Sep 23 |
| 1976 | Jun 27 | Sep 7 | Jun 26 | Sep 7 |
| 1975 | no data | Sep 2 | no data | Sep 18 |
| 1961 | May 24 | no data | May 15 | no data |
| 1960 | Jun 27 | Aug 16 | Jun 21 | Aug 28 |
| 1958 | no data | Sep 3 | no data | Sep 19 |
| 1957 | Jul 18 | no data | Apr 28 | no data |
| 1953 | no data | Sep 30 | no data | Oct 4 |
| 1952 | Jun 16 | no data | Jun 13 | no data |
| 1951 | Jun 29 | Aug 12 | Jun 3 | Aug 31 |
"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.