Last Frost Day

Frost history / Presque Isle, ME

Presque Isle, ME: frost dates by year

Last spring and first fall frost at NOAA station USC00176937, 1951 to 2018, measured from daily minimum temperatures.

Elevation 599 ft, 46.654, -68.009. Download the data (JSON), NOAA daily records

Summary at 32°F

Last spring frostFirst fall frost
MedianMay 21Sep 20
EarliestApr 30 (1989)Aug 25 (1978)
LatestJun 29 (1996)Oct 12 (2005)
Trend1.7 days earlier per decade1.4 days later per decade
Years with data6565

At 28°F (hard freeze) the median last spring date is May 9 and the median first fall date is Oct 5.

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 14Jun 29Jul 141960197019801990200020101951: Jun 111952: May 61953: Jun 41954: May 271955: May 171956: May 251957: Jun 61958: Jun 101959: May 291960: May 31961: May 211962: May 221963: May 241964: May 211965: May 151966: May 121967: Jun 11968: May 271969: May 271970: May 291971: Jun 61972: May 261973: May 81974: May 311975: May 101976: May 261977: May 281978: May 81979: May 61980: May 291981: May 191983: May 171984: May 191985: May 291986: May 131987: May 251988: Jun 31989: Apr 301990: May 261991: May 191992: May 261993: May 141994: May 241995: May 121996: Jun 291997: Jun 21998: May 121999: May 152000: Jun 62001: May 82002: May 152003: May 162004: May 102005: May 142006: May 82007: May 222008: May 62009: May 192011: May 22012: May 72013: May 192014: May 132015: May 232016: May 162018: May 24

First fall frost (32°F)

Aug 13Aug 28Sep 12Sep 27Oct 12Oct 271960197019801990200020101951: Sep 271952: Sep 81953: Sep 241954: Sep 151955: Sep 141956: Sep 101957: Oct 121958: Sep 201959: Sep 141960: Sep 161961: Sep 171962: Sep 211963: Sep 51964: Sep 131965: Aug 311966: Sep 201967: Sep 121968: Oct 51969: Sep 141970: Sep 291971: Sep 261972: Sep 201973: Sep 211974: Sep 171975: Sep 151976: Sep 31977: Sep 201978: Aug 251979: Sep 201980: Sep 161981: Sep 291982: Sep 291983: Sep 141984: Sep 81985: Sep 121986: Sep 181987: Sep 261988: Sep 301990: Oct 41991: Sep 221992: Sep 241993: Sep 221994: Sep 41996: Sep 271997: Sep 241998: Oct 61999: Oct 52000: Sep 252001: Sep 192002: Aug 312003: Oct 72004: Sep 302005: Oct 122006: Sep 112007: Sep 302008: Sep 192009: Sep 172011: Oct 62012: Sep 202013: Oct 52014: Sep 132015: Sep 262016: Sep 302017: Sep 302018: Sep 9

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
2018May 24Sep 9May 18Sep 24
2017no dataSep 30no dataOct 3
2016May 16Sep 30May 1Oct 4
2015May 23Sep 26Apr 20Oct 4
2014May 13Sep 13May 9Sep 19
2013May 19Oct 5Apr 27Oct 26
2012May 7Sep 20May 7Oct 9
2011May 2Oct 6Apr 23Oct 7
2009May 19Sep 17Apr 30Sep 26
2008May 6Sep 19May 3Sep 19
2007May 22Sep 30May 22Oct 26
2006May 8Sep 11Apr 30Oct 7
2005May 14Oct 12May 13Oct 29
2004May 10Sep 30May 10Oct 6
2003May 16Oct 7May 5Oct 21
2002May 15Aug 31May 13Sep 30
2001May 8Sep 19May 6Oct 9
2000Jun 6Sep 25May 21Sep 26
1999May 15Oct 5Apr 21Oct 5
1998May 12Oct 6Apr 27Oct 7
1997Jun 2Sep 24Apr 30Sep 27
1996Jun 29Sep 27Jun 3Oct 5
1995May 12no dataMay 7no data
1994May 24Sep 4Apr 29Oct 12
1993May 14Sep 22Apr 28Oct 1
1992May 26Sep 24Apr 29Sep 24
1991May 19Sep 22May 19Oct 15
1990May 26Oct 4May 5Oct 21
1989Apr 30no dataApr 26no data
1988Jun 3Sep 30May 15Oct 5
1987May 25Sep 26May 20Oct 12
1986May 13Sep 18May 9Sep 18
1985May 29Sep 12May 9Oct 12
1984May 19Sep 8Apr 22Oct 5
1983May 17Sep 14Apr 20Oct 10
1982no dataSep 29no dataOct 10
1981May 19Sep 29May 18Oct 12
1980May 29Sep 16May 24Sep 25
1979May 6Sep 20May 6Oct 10
1978May 8Aug 25May 5Sep 14
1977May 28Sep 20May 9Oct 8
1976May 26Sep 3Apr 25Oct 12
1975May 10Sep 15May 10Oct 3
1974May 31Sep 17May 21Sep 24
1973May 8Sep 21Apr 26Oct 9
1972May 26Sep 20May 11Oct 2
1971Jun 6Sep 26Apr 17Sep 27
1970May 29Sep 29May 25Oct 19
1969May 27Sep 14May 27Sep 20
1968May 27Oct 5May 8Oct 7
1967Jun 1Sep 12May 19Oct 7
1966May 12Sep 20May 12Sep 20
1965May 15Aug 31May 15Sep 28
1964May 21Sep 13May 21Sep 20
1963May 24Sep 5May 13Sep 14
1962May 22Sep 21May 13Oct 15
1961May 21Sep 17May 18Oct 16
1960May 3Sep 16May 3Sep 17
1959May 29Sep 14May 9Sep 14
1958Jun 10Sep 20May 6Oct 6
1957Jun 6Oct 12May 17Oct 21
1956May 25Sep 10May 25Sep 26
1955May 17Sep 14Apr 22Sep 14
1954May 27Sep 15May 13Oct 7
1953Jun 4Sep 24May 1Sep 24
1952May 6Sep 8Apr 24Sep 15
1951Jun 11Sep 27May 11Oct 10

"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.