Last Frost Day

Frost history / Argyle, MN

Argyle, MN: frost dates by year

Last spring and first fall frost at NOAA station USC00210252, 1951 to 2019, measured from daily minimum temperatures.

Elevation 847 ft, 48.331, -96.825. Download the data (JSON), NOAA daily records

Summary at 32°F

Last spring frostFirst fall frost
MedianMay 17Sep 23
EarliestApr 25 (2001)Aug 20 (2004)
LatestJun 20 (1969)Oct 25 (1994)
Trend1.0 days earlier per decade1.3 days later per decade
Years with data5961

At 28°F (hard freeze) the median last spring date is May 9 and the median first fall date is Oct 2.

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 291960197019801990200020101951: May 101952: May 171953: Jun 61954: May 251955: May 91956: Jun 11957: May 271967: May 211968: May 231969: Jun 201970: May 261971: May 191972: May 101973: May 171974: May 151975: May 151976: May 171977: May 81978: May 131979: May 211980: May 151981: May 111982: Jun 21983: May 251984: May 261985: Apr 261986: May 71987: May 231988: May 171989: May 71990: May 191991: May 31992: May 241993: May 261994: May 141995: May 181996: May 121997: May 211998: Apr 281999: May 92000: May 192001: Apr 252002: May 252003: May 212004: May 152005: May 162006: May 122007: May 252008: May 282009: May 242010: May 102011: May 272012: May 312013: May 132014: May 172016: May 152017: May 122018: May 122019: May 18

First fall frost (32°F)

Aug 13Aug 28Sep 12Sep 27Oct 12Oct 27Nov 111960197019801990200020101951: Sep 241952: Sep 221953: Oct 61955: Sep 111956: Sep 61957: Sep 231961: Sep 231962: Sep 191966: Sep 51967: Sep 91968: Oct 31969: Sep 171970: Sep 131971: Sep 181972: Sep 251973: Sep 161974: Sep 211975: Sep 121976: Sep 211977: Oct 11978: Sep 271979: Oct 41980: Sep 231981: Sep 281982: Aug 271983: Sep 221984: Sep 111985: Sep 241986: Aug 271987: Sep 251988: Oct 21989: Sep 101990: Sep 161991: Sep 231992: Sep 81993: Sep 151994: Oct 251995: Sep 141996: Sep 291997: Sep 231998: Sep 221999: Sep 202000: Sep 232001: Sep 232002: Sep 252003: Sep 232004: Aug 202005: Oct 62006: Sep 292007: Sep 152008: Oct 22009: Sep 292010: Oct 22011: Sep 152012: Sep 182013: Oct 122014: Sep 122015: Sep 292016: Oct 92017: Oct 52018: Sep 25

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
2019May 18no dataMay 11no data
2018May 12Sep 25May 10Sep 28
2017May 12Oct 5Apr 30Oct 10
2016May 15Oct 9May 15Oct 13
2015no dataSep 29no dataOct 15
2014May 17Sep 12May 5Oct 9
2013May 13Oct 12May 13Oct 15
2012May 31Sep 18Apr 27Sep 22
2011May 27Sep 15May 3Oct 19
2010May 10Oct 2May 10Oct 17
2009May 24Sep 29May 15Oct 9
2008May 28Oct 2May 12Oct 21
2007May 25Sep 15Apr 18Oct 22
2006May 12Sep 29May 6Oct 9
2005May 16Oct 6May 4Oct 7
2004May 15Aug 20May 3Oct 2
2003May 21Sep 23Apr 30Sep 30
2002May 25Sep 25May 25Oct 2
2001Apr 25Sep 23Apr 22Oct 6
2000May 19Sep 23Apr 17Oct 4
1999May 9Sep 20Apr 18Oct 2
1998Apr 28Sep 22Apr 21Oct 1
1997May 21Sep 23May 20Oct 20
1996May 12Sep 29May 12Oct 3
1995May 18Sep 14May 6Sep 22
1994May 14Oct 25May 14Oct 25
1993May 26Sep 15May 22Sep 29
1992May 24Sep 8May 4Sep 22
1991May 3Sep 23May 2Oct 4
1990May 19Sep 16May 19Sep 23
1989May 7Sep 10May 7Sep 23
1988May 17Oct 2May 14Oct 4
1987May 23Sep 25Apr 25Oct 2
1986May 7Aug 27May 2Oct 9
1985Apr 26Sep 24Apr 16Sep 25
1984May 26Sep 11May 12Sep 26
1983May 25Sep 22May 17Oct 12
1982Jun 2Aug 27May 9Oct 20
1981May 11Sep 28May 11Sep 28
1980May 15Sep 23May 13Sep 27
1979May 21Oct 4May 15Oct 4
1978May 13Sep 27Apr 21Oct 7
1977May 8Oct 1Apr 26Oct 15
1976May 17Sep 21May 8Sep 21
1975May 15Sep 12May 15Oct 1
1974May 15Sep 21Apr 15Sep 21
1973May 17Sep 16May 15Sep 16
1972May 10Sep 25May 8Oct 6
1971May 19Sep 18May 11Sep 18
1970May 26Sep 13May 5Sep 13
1969Jun 20Sep 17May 20Oct 16
1968May 23Oct 3May 5Oct 4
1967May 21Sep 9May 20Sep 27
1966no dataSep 5no dataOct 5
1962no dataSep 19no dataSep 20
1961no dataSep 23no dataSep 28
1957May 27Sep 23May 9Sep 23
1956Jun 1Sep 6Apr 30Sep 14
1955May 9Sep 11May 8Sep 11
1954May 25no dataMay 9no data
1953Jun 6Oct 6May 13Oct 6
1952May 17Sep 22May 11Oct 2
1951May 10Sep 24May 10Sep 24

"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.