Frost history / Mckeesport, PA
Mckeesport, PA: frost dates by year
Last spring and first fall frost at NOAA station USC00365573, 1988 to 2019, measured from daily minimum temperatures.
Elevation 740 ft, 40.339, -79.860. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | Apr 27 | Oct 19 |
| Earliest | Apr 3 (1991) | Sep 16 (2007) |
| Latest | May 24 (2006) | Nov 11 (2016) |
| Trend | 4.5 days later per decade | 2.3 days later per decade |
| Years with data | 23 | 29 |
At 28°F (hard freeze) the median last spring date is Apr 11 and the median first fall date is Nov 3.
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 |
|---|---|---|---|---|
| 2019 | no data | Oct 19 | no data | Nov 1 |
| 2017 | May 10 | Nov 1 | Apr 9 | Nov 11 |
| 2016 | Apr 17 | Nov 11 | Apr 16 | Nov 11 |
| 2015 | Apr 25 | Oct 19 | Apr 2 | Oct 20 |
| 2014 | no data | Oct 28 | no data | Nov 3 |
| 2013 | May 15 | Oct 9 | Apr 22 | Oct 9 |
| 2012 | Apr 30 | Oct 13 | Mar 12 | Oct 17 |
| 2011 | Apr 15 | Oct 29 | Apr 8 | Nov 6 |
| 2010 | May 10 | Oct 31 | Mar 28 | Nov 2 |
| 2009 | no data | Oct 18 | no data | Nov 4 |
| 2008 | May 21 | Oct 4 | May 21 | Oct 22 |
| 2007 | May 18 | Sep 16 | Apr 20 | Sep 16 |
| 2006 | May 24 | Sep 20 | May 21 | Sep 29 |
| 2005 | May 5 | Oct 29 | Mar 21 | Nov 5 |
| 2004 | no data | Oct 17 | no data | Nov 9 |
| 2002 | no data | Nov 1 | no data | Nov 2 |
| 2001 | May 14 | Oct 7 | Apr 19 | Oct 28 |
| 2000 | Apr 27 | Oct 28 | Apr 13 | Nov 6 |
| 1999 | Apr 25 | Oct 27 | Mar 28 | Nov 17 |
| 1998 | Apr 13 | Nov 3 | Apr 7 | Nov 21 |
| 1997 | May 10 | Oct 21 | Apr 20 | Oct 22 |
| 1996 | May 14 | Oct 11 | Apr 11 | Nov 3 |
| 1995 | Apr 26 | Oct 17 | Apr 15 | Nov 4 |
| 1994 | Apr 23 | Oct 27 | Apr 8 | Nov 11 |
| 1993 | Apr 27 | Oct 10 | Mar 19 | Nov 7 |
| 1992 | no data | Oct 17 | no data | Oct 19 |
| 1991 | Apr 3 | Oct 7 | Apr 3 | Nov 3 |
| 1990 | no data | Oct 20 | no data | Oct 26 |
| 1989 | Apr 24 | no data | Apr 14 | no data |
| 1988 | Apr 25 | Oct 12 | Apr 20 | Oct 12 |
"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.