Frost history / Emporium, PA
Emporium, PA: frost dates by year
Last spring and first fall frost at NOAA station USC00362629, 1969 to 2008, measured from daily minimum temperatures.
Elevation 1,040 ft, 41.507, -78.228. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | May 12 | Oct 11 |
| Earliest | Apr 27 (1999) | Sep 14 (1975) |
| Latest | Jun 10 (1983) | Nov 4 (2004) |
| Trend | 2.2 days earlier per decade | 1.1 days later per decade |
| Years with data | 36 | 37 |
At 28°F (hard freeze) the median last spring date is Apr 30 and the median first fall date is Oct 18.
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 |
|---|---|---|---|---|
| 2008 | May 6 | no data | May 1 | no data |
| 2007 | May 15 | Oct 29 | Apr 14 | Nov 2 |
| 2006 | May 8 | Oct 13 | Apr 29 | Oct 15 |
| 2005 | May 17 | Oct 28 | May 6 | Oct 30 |
| 2004 | May 6 | Nov 4 | Apr 28 | Nov 9 |
| 2003 | Apr 27 | Oct 3 | Apr 24 | Nov 9 |
| 2002 | May 23 | Oct 14 | May 22 | Oct 24 |
| 2001 | May 31 | Oct 8 | Apr 29 | Oct 9 |
| 2000 | May 16 | Sep 29 | Apr 14 | Oct 23 |
| 1999 | Apr 27 | Oct 7 | Apr 25 | Oct 7 |
| 1998 | Apr 29 | Oct 22 | Apr 28 | Oct 31 |
| 1997 | May 23 | Oct 17 | May 8 | Oct 17 |
| 1996 | May 15 | Oct 4 | May 14 | Oct 4 |
| 1995 | May 8 | Sep 24 | Apr 25 | Nov 6 |
| 1994 | May 14 | Oct 11 | May 13 | Oct 12 |
| 1993 | Apr 28 | Oct 1 | Apr 27 | Oct 11 |
| 1992 | May 25 | Oct 5 | Apr 15 | Oct 18 |
| 1991 | May 4 | Sep 30 | Apr 12 | Oct 14 |
| 1990 | May 13 | Oct 20 | Apr 19 | Oct 27 |
| 1989 | May 5 | Sep 27 | Apr 25 | Oct 10 |
| 1988 | no data | Oct 13 | no data | Oct 27 |
| 1987 | May 9 | no data | May 1 | no data |
| 1986 | May 4 | Oct 10 | May 4 | Oct 10 |
| 1985 | May 10 | Oct 12 | May 5 | Oct 26 |
| 1984 | no data | Oct 4 | no data | Oct 6 |
| 1983 | Jun 10 | no data | May 18 | no data |
| 1982 | May 6 | Oct 17 | Apr 30 | Oct 18 |
| 1981 | May 20 | Sep 24 | May 8 | Oct 17 |
| 1980 | May 10 | Sep 27 | May 8 | Oct 23 |
| 1979 | May 27 | Oct 13 | May 2 | Oct 31 |
| 1978 | no data | Oct 15 | no data | Oct 17 |
| 1977 | Jun 8 | Oct 14 | May 1 | Oct 18 |
| 1976 | May 19 | Oct 11 | May 14 | Oct 19 |
| 1975 | May 8 | Sep 14 | Apr 29 | Sep 14 |
| 1974 | May 11 | Sep 24 | May 9 | Oct 3 |
| 1973 | May 20 | Oct 27 | Apr 16 | Nov 8 |
| 1972 | May 13 | Oct 10 | May 11 | Oct 10 |
| 1971 | May 23 | Nov 4 | Apr 24 | Nov 7 |
| 1970 | May 8 | Oct 17 | May 8 | Oct 17 |
| 1969 | no data | Oct 15 | no data | Oct 23 |
"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.