Last Frost Day

Frost history / Bear Gap, PA

Bear Gap, PA: frost dates by year

Last spring and first fall frost at NOAA station USC00360457, 2008 to 2024, measured from daily minimum temperatures.

Elevation 1,015 ft, 40.821, -76.498. Download the data (JSON), NOAA daily records

Summary at 32°F

Last spring frostFirst fall frost
MedianApr 30Oct 18
EarliestApr 22 (2011)Sep 2 (2017)
LatestMay 19 (2009)Nov 3 (2021)
Trend3.6 days earlier per decade0.5 days earlier per decade
Years with data1515

At 28°F (hard freeze) the median last spring date is Apr 13 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)

Apr 15Apr 30May 15May 30201020202008: Apr 302009: May 192010: May 112011: Apr 222012: May 12013: May 142014: Apr 282015: Apr 262016: Apr 242017: Apr 232018: Apr 242019: May 162020: May 132022: Apr 302024: Apr 26

First fall frost (32°F)

Aug 28Sep 12Sep 27Oct 12Oct 27Nov 11201020202008: Oct 72009: Oct 142010: Oct 202011: Oct 282012: Oct 132013: Oct 232014: Oct 202015: Oct 182016: Oct 312017: Sep 22018: Oct 182020: Sep 192021: Nov 32023: Oct 312024: Oct 11

Dots are single years. The gray line is the median, the green line the fitted trend.

Year by year

YearLast spring 32°FFirst fall 32°FLast spring 28°FFirst fall 28°F
2024Apr 26Oct 11Mar 25Oct 25
2023no dataOct 31no dataNov 2
2022Apr 30no dataApr 30no data
2021no dataNov 3no dataNov 3
2020May 13Sep 19May 9Nov 18
2019May 16no dataApr 3no data
2018Apr 24Oct 18Apr 24Nov 11
2017Apr 23Sep 2Apr 9Nov 8
2016Apr 24Oct 31Apr 13Oct 31
2015Apr 26Oct 18Apr 25Oct 19
2014Apr 28Oct 20Apr 20Nov 8
2013May 14Oct 23May 14Oct 28
2012May 1Oct 13Apr 6Oct 13
2011Apr 22Oct 28Mar 30Oct 30
2010May 11Oct 20Mar 27Nov 2
2009May 19Oct 14Apr 13Oct 19
2008Apr 30Oct 7Apr 17Oct 19

"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.