Last Frost Day

Frost history / North Adams Harriman Ap, MA

North Adams Harriman Ap, MA: frost dates by year

Last spring and first fall frost at NOAA station USW00054768, 1988 to 2024, measured from daily minimum temperatures.

Elevation 654 ft, 42.696, -73.171. Download the data (JSON), NOAA daily records

Summary at 32°F

Last spring frostFirst fall frost
MedianMay 12Oct 7
EarliestApr 23 (2018)Sep 16 (1988)
LatestMay 27 (1997)Oct 31 (2023)
Trend5.6 days earlier per decade5.1 days later per decade
Years with data2830

At 28°F (hard freeze) the median last spring date is Apr 27 and the median first fall date is Oct 23.

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 30Jun 1419902000201020201997: May 271998: May 141999: May 142000: May 162001: May 152002: May 232003: May 52004: May 82005: May 182006: May 72007: May 142008: May 212009: May 192010: May 112011: May 62012: Apr 302013: May 152014: May 72015: May 142016: May 112017: May 42018: Apr 232019: Apr 292020: May 142021: Apr 272022: May 92023: May 182024: Apr 27

First fall frost (32°F)

Aug 28Sep 12Sep 27Oct 12Oct 27Nov 1119902000201020201988: Sep 161996: Oct 31997: Sep 241998: Oct 61999: Oct 62000: Sep 282001: Oct 82002: Oct 142003: Oct 72004: Oct 52005: Oct 212006: Oct 72007: Oct 132008: Oct 72009: Oct 112010: Sep 212011: Oct 62012: Oct 122013: Oct 92014: Oct 62015: Oct 172016: Sep 262017: Oct 172018: Oct 172019: Oct 52020: Sep 192021: Oct 242022: Oct 92023: Oct 312024: Oct 16

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 27Oct 16Apr 26Oct 17
2023May 18Oct 31Mar 29Nov 2
2022May 9Oct 9Mar 30Oct 29
2021Apr 27Oct 24Apr 4Nov 5
2020May 14Sep 19May 14Oct 30
2019Apr 29Oct 5Apr 29Nov 2
2018Apr 23Oct 17Apr 23Oct 30
2017May 4Oct 17Apr 14Nov 8
2016May 11Sep 26Apr 28Oct 15
2015May 14Oct 17Apr 16Oct 18
2014May 7Oct 6Apr 25Nov 9
2013May 15Oct 9Apr 22Oct 28
2012Apr 30Oct 12Apr 30Oct 12
2011May 6Oct 6Apr 22Oct 28
2010May 11Sep 21May 11Nov 2
2009May 19Oct 11Apr 17Oct 12
2008May 21Oct 7May 1Oct 18
2007May 14Oct 13Apr 11Nov 4
2006May 7Oct 7Apr 29Oct 22
2005May 18Oct 21May 13Oct 28
2004May 8Oct 5May 5Oct 28
2003May 5Oct 7May 4Oct 24
2002May 23Oct 14May 20Oct 14
2001May 15Oct 8Apr 30Oct 9
2000May 16Sep 28Apr 25Sep 29
1999May 14Oct 6Apr 29Oct 7
1998May 14Oct 6Apr 29Oct 6
1997May 27Sep 24Apr 16Oct 17
1996no dataOct 3no dataOct 4
1988no dataSep 16no dataOct 7

"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.