Last Frost Day

Frost history / Blowing Rock 1NW, NC

Blowing Rock 1NW, NC: frost dates by year

Last spring and first fall frost at NOAA station USC00310901, 1956 to 2008, measured from daily minimum temperatures.

Elevation 3,850 ft, 36.147, -81.703. Download the data (JSON), NOAA daily records

Summary at 32°F

Last spring frostFirst fall frost
MedianMay 2Oct 7
EarliestApr 3 (1965)Sep 21 (1956)
LatestMay 28 (1961)Nov 7 (1984)
Trendlittle change (less than half a day per decade)0.6 days later per decade
Years with data4037

At 28°F (hard freeze) the median last spring date is Apr 17 and the median first fall date is Oct 22.

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)

Mar 16Mar 31Apr 15Apr 30May 15May 30Jun 14196019701980199020001957: May 71958: Apr 141959: May 161960: May 131961: May 281962: Apr 211963: May 21964: Apr 111965: Apr 31966: May 111967: Apr 291968: May 71969: May 111970: Apr 81971: May 61972: Apr 271973: May 181974: May 71975: Apr 171976: May 91977: May 111978: May 31979: May 271981: May 211982: Apr 241983: May 91984: Apr 251985: Apr 111986: Apr 241987: Apr 101988: Apr 201989: May 81990: Apr 191991: Apr 221992: May 71994: May 191995: Apr 251996: May 11997: May 142008: Apr 29

First fall frost (32°F)

Sep 12Sep 27Oct 12Oct 27Nov 11Nov 26196019701980199020001956: Sep 211957: Oct 131958: Oct 71959: Oct 251960: Oct 211961: Oct 151962: Oct 241963: Sep 241964: Oct 61965: Oct 51966: Oct 201967: Sep 301968: Oct 51969: Oct 181970: Oct 171971: Nov 41972: Oct 11973: Oct 181974: Oct 31975: Oct 31976: Oct 111978: Oct 81980: Oct 41981: Oct 31982: Oct 171983: Sep 231984: Nov 71985: Oct 71986: Oct 191987: Oct 41988: Oct 61989: Oct 91990: Oct 191991: Oct 71992: Oct 61993: Sep 302007: Oct 29

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
2008Apr 29no dataApr 29no data
2007no dataOct 29no dataOct 29
1997May 14no dataMay 4no data
1996May 1no dataApr 23no data
1995Apr 25no dataApr 6no data
1994May 19no dataMay 19no data
1993no dataSep 30no dataOct 1
1992May 7Oct 6Apr 6Oct 19
1991Apr 22Oct 7Mar 31Nov 3
1990Apr 19Oct 19Apr 19Oct 26
1989May 8Oct 9May 8Oct 20
1988Apr 20Oct 6Mar 22Oct 13
1987Apr 10Oct 4Apr 5Oct 22
1986Apr 24Oct 19Apr 24Nov 13
1985Apr 11Oct 7Apr 11Nov 8
1984Apr 25Nov 7Apr 6Nov 7
1983May 9Sep 23Apr 25Nov 5
1982Apr 24Oct 17Apr 11Nov 5
1981May 21Oct 3Apr 7Oct 3
1980no dataOct 4no dataOct 26
1979May 27no dataApr 29no data
1978May 3Oct 8Apr 27Oct 15
1977May 11no dataMay 11no data
1976May 9Oct 11May 5Oct 18
1975Apr 17Oct 3Apr 13Oct 3
1974May 7Oct 3Apr 11Oct 3
1973May 18Oct 18May 18Nov 6
1972Apr 27Oct 1Apr 9Oct 20
1971May 6Nov 4May 6Nov 5
1970Apr 8Oct 17Apr 7Oct 17
1969May 11Oct 18Apr 20Oct 23
1968May 7Oct 5Mar 25Oct 5
1967Apr 29Sep 30Mar 23Oct 20
1966May 11Oct 20May 11Nov 3
1965Apr 3Oct 5Apr 3Oct 25
1964Apr 11Oct 6Apr 10Oct 6
1963May 2Sep 24May 2Nov 2
1962Apr 21Oct 24Apr 21Oct 24
1961May 28Oct 15May 27Oct 15
1960May 13Oct 21Apr 11Oct 21
1959May 16Oct 25Apr 24Oct 28
1958Apr 14Oct 7Apr 8Oct 7
1957May 7Oct 13Apr 15Oct 14
1956no dataSep 21no dataNov 9

"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.