Frost history / Raystown Lake 2, PA
Raystown Lake 2, PA: frost dates by year
Last spring and first fall frost at NOAA station USC00367312, 1974 to 2012, measured from daily minimum temperatures.
Elevation 1,000 ft, 40.381, -78.075. Download the data (JSON) · NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | Apr 28 | Oct 17 |
| Earliest | Mar 27 (2005) | Sep 24 (1974) |
| Latest | May 17 (1984) | Nov 11 (2005) |
| Trend | 7.7 days earlier per decade | 5.1 days later per decade |
| Years with data | 31 | 30 |
At 28°F (hard freeze) the median last spring date is Apr 11 and the median first fall date is Oct 31.
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 |
|---|---|---|---|---|
| 2012 | Apr 28 | no data | Mar 28 | no data |
| 2011 | Apr 3 | Oct 28 | Apr 1 | Nov 5 |
| 2010 | Mar 29 | no data | Mar 29 | no data |
| 2009 | Apr 17 | Oct 19 | Apr 1 | Nov 7 |
| 2008 | Apr 15 | Oct 20 | Apr 4 | Nov 12 |
| 2007 | Apr 12 | Oct 29 | Apr 12 | Nov 4 |
| 2006 | Apr 9 | Nov 3 | Mar 26 | Nov 3 |
| 2005 | Mar 27 | Nov 11 | Mar 23 | Nov 11 |
| 2004 | Apr 28 | Nov 10 | Apr 7 | Nov 10 |
| 2003 | Apr 10 | no data | Apr 1 | no data |
| 2002 | Apr 23 | Oct 31 | Apr 8 | Nov 26 |
| 2001 | no data | Oct 9 | no data | Oct 29 |
| 1998 | Apr 28 | Nov 3 | Apr 8 | Nov 3 |
| 1997 | May 10 | Oct 17 | Apr 16 | Oct 23 |
| 1996 | May 15 | Oct 4 | Apr 18 | Nov 4 |
| 1995 | Apr 16 | Oct 17 | Apr 16 | Nov 5 |
| 1994 | May 3 | Oct 11 | Apr 23 | Nov 12 |
| 1993 | Apr 28 | Oct 1 | Apr 5 | Oct 11 |
| 1992 | May 7 | Sep 24 | Apr 16 | Oct 18 |
| 1991 | Apr 13 | Oct 8 | Apr 4 | Oct 20 |
| 1990 | Apr 20 | Oct 20 | Apr 19 | Oct 20 |
| 1989 | Apr 24 | Oct 10 | Apr 24 | Nov 4 |
| 1988 | no data | Oct 8 | no data | Oct 27 |
| 1984 | May 17 | no data | Apr 10 | no data |
| 1983 | May 17 | Oct 22 | Apr 19 | Oct 30 |
| 1982 | May 2 | Oct 18 | Apr 23 | Oct 23 |
| 1981 | May 8 | Oct 10 | Apr 21 | Oct 20 |
| 1980 | May 10 | Sep 27 | Apr 17 | Oct 23 |
| 1979 | May 17 | Oct 15 | Apr 11 | Nov 4 |
| 1978 | May 1 | Oct 16 | May 1 | Oct 25 |
| 1977 | May 1 | Oct 13 | Apr 10 | Oct 18 |
| 1976 | May 5 | Oct 19 | Apr 27 | Oct 19 |
| 1975 | Apr 23 | Oct 31 | Apr 22 | Oct 31 |
| 1974 | no data | Sep 24 | no data | Oct 3 |
"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 1991–2020 frost probabilities.