Frost history / La Barge, WY
La Barge, WY: frost dates by year
Last spring and first fall frost at NOAA station USC00485252, 1963 to 2011, measured from daily minimum temperatures.
Elevation 6,598 ft, 42.264, -110.195. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | Jun 24 | Aug 30 |
| Earliest | May 22 (2009) | Aug 7 (1996) |
| Latest | Jul 31 (1995) | Sep 25 (1998) |
| Trend | 2.8 days earlier per decade | little change (less than half a day per decade) |
| Years with data | 31 | 33 |
At 28°F (hard freeze) the median last spring date is May 31 and the median first fall date is Sep 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 |
|---|---|---|---|---|
| 2011 | Jun 17 | Sep 18 | May 20 | Sep 21 |
| 2010 | Jun 18 | Aug 24 | May 30 | Sep 7 |
| 2009 | May 22 | Aug 16 | May 21 | Sep 9 |
| 2006 | Jun 25 | no data | May 31 | no data |
| 2005 | Jun 13 | Aug 30 | Jun 10 | Aug 30 |
| 2004 | Jun 1 | Aug 26 | May 31 | Aug 26 |
| 2003 | Jun 4 | Sep 12 | May 20 | Sep 12 |
| 2002 | Jun 12 | Aug 9 | Jun 11 | Sep 18 |
| 2001 | Jun 16 | Sep 7 | Jun 13 | Sep 7 |
| 2000 | no data | Sep 6 | no data | Sep 6 |
| 1999 | Jun 28 | Sep 5 | May 17 | Sep 8 |
| 1998 | Jun 28 | Sep 25 | May 24 | Oct 5 |
| 1997 | no data | Sep 16 | no data | Sep 28 |
| 1996 | Jun 2 | Aug 7 | May 21 | Sep 6 |
| 1995 | Jul 31 | Aug 9 | May 19 | Sep 21 |
| 1994 | Jun 27 | Aug 30 | May 21 | Sep 15 |
| 1993 | no data | Aug 27 | no data | Aug 27 |
| 1991 | Jul 1 | Sep 13 | Jun 22 | Sep 15 |
| 1990 | Jul 7 | Aug 28 | Jul 7 | Sep 22 |
| 1989 | Jun 22 | Aug 15 | Jun 22 | Aug 27 |
| 1988 | Jun 30 | Aug 18 | Jun 1 | Sep 9 |
| 1987 | Jul 19 | Aug 16 | Jun 8 | Sep 6 |
| 1986 | no data | Sep 1 | no data | Sep 11 |
| 1985 | no data | Aug 10 | no data | Aug 10 |
| 1980 | Jun 15 | no data | Apr 26 | no data |
| 1979 | Jul 7 | no data | Jun 9 | no data |
| 1978 | Jul 1 | Aug 15 | Jun 1 | Aug 18 |
| 1977 | May 31 | Aug 23 | May 30 | Sep 9 |
| 1976 | no data | Aug 27 | no data | Sep 8 |
| 1973 | Jul 2 | Sep 2 | Jun 19 | Sep 14 |
| 1972 | Jun 19 | Sep 7 | May 23 | Sep 14 |
| 1971 | Jun 30 | Sep 5 | Jun 30 | Sep 15 |
| 1970 | Jun 10 | no data | May 22 | no data |
| 1969 | Jul 4 | Aug 31 | Jun 29 | Sep 5 |
| 1968 | Jul 1 | Aug 16 | Jul 1 | Sep 16 |
| 1967 | Jun 24 | Sep 13 | May 20 | Sep 13 |
| 1964 | Jun 20 | no data | May 24 | no data |
| 1963 | no data | Sep 15 | no data | Oct 13 |
"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.