Last Frost Day

Frost history / Helena, AR

Helena, AR: frost dates by year

Last spring and first fall frost at NOAA station USC00033242, 1951 to 2025, measured from daily minimum temperatures.

Elevation 195 ft, 34.521, -90.590. Download the data (JSON), NOAA daily records

Summary at 32°F

Last spring frostFirst fall frost
MedianMar 20Nov 10
EarliestFeb 21 (2012)Sep 30 (1967)
LatestApr 17 (2018)Dec 9 (2016)
Trendlittle change (less than half a day per decade)2.1 days later per decade
Years with data6067

At 28°F (hard freeze) the median last spring date is Mar 7 and the median first fall date is Nov 19.

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)

Feb 14Mar 1Mar 16Mar 31Apr 15Apr 3019601970198019902000201020201951: Mar 201952: Mar 161953: Feb 231954: Mar 161955: Mar 281956: Mar 201957: Apr 131958: Mar 201959: Mar 231960: Mar 251961: Feb 261962: Apr 161963: Mar 231964: Mar 311966: Apr 71967: Mar 191968: Apr 61969: Mar 271970: Mar 161971: Apr 81972: Mar 41974: Apr 61975: Apr 41976: Mar 181977: Mar 231978: Mar 181979: Mar 261981: Mar 191982: Mar 81983: Mar 291984: Mar 111985: Feb 281986: Mar 221987: Apr 51988: Mar 161989: Apr 111990: Feb 261991: Mar 311992: Apr 41993: Mar 181994: Mar 101995: Mar 101997: Feb 241998: Mar 131999: Mar 162004: Feb 272005: Mar 152006: Mar 272007: Apr 82008: Mar 242010: Mar 292011: Apr 12012: Feb 212013: Mar 272014: Mar 262015: Mar 102016: Mar 202017: Mar 172018: Apr 172024: Mar 20

First fall frost (32°F)

Sep 12Sep 27Oct 12Oct 27Nov 11Nov 26Dec 11Dec 2619601970198019902000201020201951: Nov 21952: Oct 211953: Nov 101955: Nov 41956: Nov 91957: Oct 281958: Nov 271959: Nov 61960: Nov 101961: Oct 271962: Nov 41963: Nov 141964: Nov 201965: Oct 251966: Oct 201967: Sep 301968: Oct 251969: Nov 51970: Nov 61971: Nov 41974: Nov 151975: Nov 141976: Oct 211977: Nov 111978: Dec 41979: Nov 111980: Nov 191981: Oct 241982: Nov 41983: Nov 121984: Nov 121985: Dec 21986: Nov 131987: Nov 121988: Dec 21989: Oct 201990: Nov 301991: Nov 31992: Nov 61993: Oct 311994: Dec 11995: Nov 41996: Nov 31997: Nov 151998: Nov 61999: Dec 72001: Nov 212002: Nov 162003: Nov 242004: Dec 12005: Nov 172006: Nov 32007: Nov 162008: Nov 162010: Nov 72011: Nov 182012: Nov 132014: Nov 22015: Nov 222016: Dec 92017: Oct 292018: Nov 102019: Nov 12020: Dec 12023: Nov 12024: Nov 292025: Nov 10

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
2025no dataNov 10no dataNov 10
2024Mar 20Nov 29Feb 19Dec 3
2023no dataNov 1no dataDec 11
2020no dataDec 1no dataDec 1
2019no dataNov 1no dataNov 12
2018Apr 17Nov 10Feb 10Nov 15
2017Mar 17Oct 29Mar 15Nov 23
2016Mar 20Dec 9Feb 13Dec 9
2015Mar 10Nov 22Mar 7Nov 23
2014Mar 26Nov 2Mar 8Nov 15
2013Mar 27no dataMar 27no data
2012Feb 21Nov 13Feb 15Nov 25
2011Apr 1Nov 18Feb 17Dec 1
2010Mar 29Nov 7Mar 4Dec 6
2008Mar 24Nov 16Mar 9Nov 19
2007Apr 8Nov 16Mar 8Dec 4
2006Mar 27Nov 3Feb 27Nov 21
2005Mar 15Nov 17Feb 12Nov 30
2004Feb 27Dec 1Feb 16Dec 14
2003no dataNov 24no dataNov 29
2002no dataNov 16no dataNov 28
2001no dataNov 21no dataDec 24
1999Mar 16Dec 7Feb 24Dec 16
1998Mar 13Nov 6Mar 13Dec 22
1997Feb 24Nov 15Jan 30Nov 16
1996no dataNov 3no dataNov 27
1995Mar 10Nov 4Mar 4Nov 29
1994Mar 10Dec 1Feb 27Dec 12
1993Mar 18Oct 31Mar 14Nov 1
1992Apr 4Nov 6Feb 10Nov 6
1991Mar 31Nov 3Feb 27Nov 4
1990Feb 26Nov 30Jan 13Dec 8
1989Apr 11Oct 20Mar 9Nov 16
1988Mar 16Dec 2Mar 15Dec 5
1987Apr 5Nov 12Apr 4Dec 2
1986Mar 22Nov 13Mar 22Nov 13
1985Feb 28Dec 2Feb 16Dec 2
1984Mar 11Nov 12Mar 11Nov 22
1983Mar 29Nov 12Mar 22Nov 12
1982Mar 8Nov 4Mar 8Nov 5
1981Mar 19Oct 24Feb 14Oct 24
1980no dataNov 19no dataNov 20
1979Mar 26Nov 11Mar 11Nov 29
1978Mar 18Dec 4Mar 6Dec 4
1977Mar 23Nov 11Mar 1Nov 26
1976Mar 18Oct 21Feb 9Nov 5
1975Apr 4Nov 14Mar 15Nov 14
1974Apr 6Nov 15Mar 25Nov 15
1972Mar 4no dataMar 3no data
1971Apr 8Nov 4Mar 9Nov 10
1970Mar 16Nov 6Mar 15Nov 16
1969Mar 27Nov 5Mar 14Nov 5
1968Apr 6Oct 25Mar 24Oct 29
1967Mar 19Sep 30Mar 18Nov 6
1966Apr 7Oct 20Apr 6Nov 3
1965no dataOct 25no dataOct 25
1964Mar 31Nov 20Mar 30Nov 21
1963Mar 23Nov 14Mar 7Nov 14
1962Apr 16Nov 4Mar 7Nov 9
1961Feb 26Oct 27Feb 5Nov 9
1960Mar 25Nov 10Mar 18Nov 11
1959Mar 23Nov 6Feb 21Nov 7
1958Mar 20Nov 27Feb 21Nov 29
1957Apr 13Oct 28Mar 8Dec 11
1956Mar 20Nov 9Feb 7Nov 9
1955Mar 28Nov 4Mar 27Nov 9
1954Mar 16no dataMar 4no data
1953Feb 23Nov 10Feb 22Nov 10
1952Mar 16Oct 21Jan 30Nov 4
1951Mar 20Nov 2Mar 13Nov 3

"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.