Last Frost Day

Frost history / Rangeley, ME

Rangeley, ME: frost dates by year

Last spring and first fall frost at NOAA station USC00177037, 1969 to 2025, measured from daily minimum temperatures.

Elevation 1,530 ft, 44.968, -70.642. Download the data (JSON), NOAA daily records

Summary at 32°F

Last spring frostFirst fall frost
MedianMay 24Sep 22
EarliestMay 9 (2006)Aug 17 (1979)
LatestJun 26 (1979)Oct 24 (2023)
Trend2.1 days earlier per decade3.1 days later per decade
Years with data5655

At 28°F (hard freeze) the median last spring date is May 14 and the median first fall date is Oct 6.

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 30May 15May 30Jun 14Jun 29Jul 141970198019902000201020201970: May 291971: Jun 21972: May 261973: May 151974: Jun 71975: May 101976: Jun 131977: May 161978: May 231979: Jun 261980: Jun 131981: May 241982: Jun 41983: Jun 101984: May 191985: May 231986: Jun 31987: May 211988: Jun 111989: May 111990: Jun 61991: May 201992: May 291993: Jun 51994: May 281995: May 211996: May 311997: May 281998: May 271999: May 282000: May 212001: May 152002: Jun 42003: May 182004: Jun 12005: May 222006: May 92007: May 232008: May 302009: May 272010: May 142011: May 102012: May 182013: May 292014: May 102015: May 242016: May 172017: May 222018: Jun 122019: May 152020: Jun 22021: May 292022: May 242023: May 202024: May 112025: May 14

First fall frost (32°F)

Jul 29Aug 13Aug 28Sep 12Sep 27Oct 12Oct 27Nov 111970198019902000201020201969: Sep 191970: Oct 51971: Oct 91973: Sep 171974: Sep 241975: Sep 151976: Sep 251977: Sep 121978: Sep 81979: Aug 171980: Sep 91981: Sep 261982: Aug 291984: Sep 71985: Sep 121986: Aug 291987: Sep 41988: Sep 161989: Sep 251990: Sep 191991: Sep 211992: Sep 241993: Sep 201994: Oct 21995: Sep 111996: Sep 241997: Sep 221998: Sep 241999: Oct 52000: Sep 52001: Sep 152002: Sep 292003: Oct 32004: Oct 42005: Oct 12006: Sep 112007: Sep 162008: Sep 192009: Sep 262010: Oct 32011: Oct 62012: Sep 252013: Sep 172014: Sep 192015: Sep 262016: Sep 262017: Oct 12018: Oct 62019: Sep 182020: Sep 152021: Oct 232022: Sep 302023: Oct 242024: Oct 132025: Sep 8

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
2025May 14Sep 8May 2Oct 2
2024May 11Oct 13Apr 27Oct 17
2023May 20Oct 24May 19Oct 25
2022May 24Sep 30May 10Oct 3
2021May 29Oct 23May 8Oct 23
2020Jun 2Sep 15May 14Sep 19
2019May 15Sep 18May 9Oct 5
2018Jun 12Oct 6May 13Oct 15
2017May 22Oct 1May 10Oct 17
2016May 17Sep 26May 9Sep 26
2015May 24Sep 26May 4Oct 4
2014May 10Sep 19May 9Sep 19
2013May 29Sep 17May 15Oct 23
2012May 18Sep 25May 8Oct 9
2011May 10Oct 6May 2Oct 7
2010May 14Oct 3May 14Oct 19
2009May 27Sep 26May 26Oct 15
2008May 30Sep 19May 7Oct 18
2007May 23Sep 16May 22Oct 17
2006May 9Sep 11May 9Oct 7
2005May 22Oct 1May 14Oct 22
2004Jun 1Oct 4May 6Oct 6
2003May 18Oct 3May 5Oct 7
2002Jun 4Sep 29May 22Oct 8
2001May 15Sep 15May 14Sep 30
2000May 21Sep 5May 20Sep 29
1999May 28Oct 5May 13Oct 6
1998May 27Sep 24Apr 29Oct 6
1997May 28Sep 22May 27Oct 8
1996May 31Sep 24May 27Oct 4
1995May 21Sep 11May 9Sep 24
1994May 28Oct 2May 20Oct 2
1993Jun 5Sep 20May 14Sep 30
1992May 29Sep 24May 19Sep 24
1991May 20Sep 21May 19Oct 8
1990Jun 6Sep 19May 31Oct 18
1989May 11Sep 25May 10Sep 25
1988Jun 11Sep 16May 15Sep 29
1987May 21Sep 4May 19Sep 26
1986Jun 3Aug 29May 10Oct 8
1985May 23Sep 12May 15Oct 17
1984May 19Sep 7May 19Sep 28
1983Jun 10no dataMay 29no data
1982Jun 4Aug 29May 22Oct 10
1981May 24Sep 26May 20Oct 11
1980Jun 13Sep 9Jun 10Sep 29
1979Jun 26Aug 17May 8Sep 20
1978May 23Sep 8May 23Sep 18
1977May 16Sep 12May 12Oct 8
1976Jun 13Sep 25Apr 27Oct 12
1975May 10Sep 15May 4Oct 5
1974Jun 7Sep 24May 9Sep 24
1973May 15Sep 17May 8Sep 21
1972May 26no dataMay 26no data
1971Jun 2Oct 9May 7Oct 9
1970May 29Oct 5May 15Oct 17
1969no dataSep 19no dataOct 5

"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.