Frost history / Laurel Mtn, PA
Laurel Mtn, PA: frost dates by year
Last spring and first fall frost at NOAA station USC00364836, 1971 to 2011, measured from daily minimum temperatures.
Elevation 2,760 ft, 40.200, -79.188. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | May 10 | Oct 13 |
| Earliest | Apr 28 (2003) | Sep 28 (1984) |
| Latest | May 18 (1984) | Nov 4 (1971) |
| Trend | 1.9 days earlier per decade | 1.7 days later per decade |
| Years with data | 14 | 21 |
At 28°F (hard freeze) the median last spring date is May 1 and the median first fall date is Oct 24.
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 | no data | Oct 28 | no data | Nov 11 |
| 2010 | May 11 | Nov 1 | Mar 28 | Nov 2 |
| 2009 | no data | Oct 18 | no data | Oct 18 |
| 2006 | no data | Oct 13 | no data | Nov 3 |
| 2005 | May 4 | Oct 25 | Mar 23 | Nov 16 |
| 2004 | May 5 | Oct 6 | Apr 29 | Nov 9 |
| 2003 | Apr 28 | Oct 3 | Apr 25 | Oct 3 |
| 2002 | no data | Oct 29 | no data | Nov 2 |
| 1989 | May 8 | Oct 4 | May 8 | Oct 21 |
| 1988 | no data | Oct 8 | no data | Oct 12 |
| 1984 | May 18 | Sep 28 | May 16 | Nov 3 |
| 1983 | May 18 | Oct 27 | May 11 | Oct 30 |
| 1982 | Apr 30 | Oct 16 | Apr 23 | Oct 23 |
| 1981 | May 8 | Oct 17 | Apr 21 | Oct 24 |
| 1980 | May 15 | Oct 6 | May 9 | Oct 15 |
| 1979 | no data | Oct 8 | no data | Oct 13 |
| 1978 | May 4 | Oct 8 | May 3 | Nov 25 |
| 1977 | May 11 | Oct 13 | May 9 | Oct 17 |
| 1976 | May 13 | Oct 17 | May 13 | Oct 18 |
| 1972 | May 11 | Oct 10 | Apr 27 | Oct 11 |
| 1971 | no data | Nov 4 | no data | Nov 5 |
"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.