Last Frost Day

Frost history / S Boston, VA

S Boston, VA: frost dates by year

Last spring and first fall frost at NOAA station USC00447925, 1978 to 2025, measured from daily minimum temperatures.

Elevation 329 ft, 36.695, -78.881. Download the data (JSON), NOAA daily records

Summary at 32°F

Last spring frostFirst fall frost
MedianApr 11Oct 25
EarliestMar 25 (2017)Sep 23 (1983)
LatestMay 27 (1988)Nov 17 (2024)
Trend2.8 days earlier per decade4.5 days later per decade
Years with data4245

At 28°F (hard freeze) the median last spring date is Mar 30 and the median first fall date is Nov 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)

Mar 16Mar 31Apr 15Apr 30May 15May 30Jun 14198019902000201020201978: Apr 231979: Apr 191981: May 91983: Apr 221985: Apr 101986: May 51987: Apr 111988: May 271992: May 11993: Apr 101994: Apr 241995: Apr 161996: Apr 111997: Apr 171998: Mar 261999: Apr 12000: Mar 292001: Apr 202002: Apr 82003: Apr 12004: Apr 82005: Apr 182006: Apr 112007: Apr 112008: Apr 172009: Apr 82010: Mar 282011: Apr 72012: Apr 132013: Apr 42014: Apr 182015: Apr 62016: Apr 112017: Mar 252018: Apr 302019: Apr 42020: May 112021: Apr 242022: Apr 212023: Apr 122024: Apr 82025: Apr 11

First fall frost (32°F)

Sep 12Sep 27Oct 12Oct 27Nov 11Nov 26198019902000201020201978: Oct 91979: Oct 141980: Oct 131981: Oct 31982: Oct 171983: Sep 231984: Nov 71985: Nov 91986: Oct 191987: Oct 51988: Oct 61990: Oct 271992: Oct 181993: Oct 241995: Nov 51996: Nov 31997: Oct 231998: Oct 231999: Oct 252000: Oct 92001: Oct 82002: Nov 12003: Oct 42004: Nov 62005: Oct 272006: Oct 152007: Oct 302008: Oct 202009: Oct 192010: Nov 72011: Oct 302012: Nov 32013: Oct 262014: Nov 32015: Oct 182016: Nov 132017: Nov 112018: Oct 222019: Nov 22020: Nov 32021: Nov 52022: Oct 192023: Nov 22024: Nov 172025: Oct 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
2025Apr 11Oct 25Mar 5Nov 12
2024Apr 8Nov 17Mar 2Nov 30
2023Apr 12Nov 2Mar 23Nov 2
2022Apr 21Oct 19Mar 30Nov 14
2021Apr 24Nov 5Apr 4Nov 5
2020May 11Nov 3Mar 9Nov 19
2019Apr 4Nov 2Apr 2Nov 4
2018Apr 30Oct 22Apr 8Nov 11
2017Mar 25Nov 11Mar 18Nov 11
2016Apr 11Nov 13Apr 10Nov 13
2015Apr 6Oct 18Mar 30Nov 15
2014Apr 18Nov 3Mar 28Nov 3
2013Apr 4Oct 26Mar 28Oct 26
2012Apr 13Nov 3Mar 12Nov 6
2011Apr 7Oct 30Mar 30Oct 31
2010Mar 28Nov 7Mar 28Nov 7
2009Apr 8Oct 19Mar 23Nov 7
2008Apr 17Oct 20Mar 26Oct 30
2007Apr 11Oct 30Apr 11Nov 7
2006Apr 11Oct 15Mar 28Oct 26
2005Apr 18Oct 27Mar 20Oct 31
2004Apr 8Nov 6Apr 8Nov 10
2003Apr 1Oct 4Mar 14Nov 10
2002Apr 8Nov 1Apr 8Nov 28
2001Apr 20Oct 8Apr 20Oct 29
2000Mar 29Oct 9Mar 17Oct 31
1999Apr 1Oct 25Mar 23Oct 29
1998Mar 26Oct 23Mar 24Nov 7
1997Apr 17Oct 23Apr 11Nov 5
1996Apr 11Nov 3Mar 24Nov 4
1995Apr 16Nov 5Apr 5Nov 5
1994Apr 24no dataApr 8no data
1993Apr 10Oct 24Apr 10Nov 2
1992May 1Oct 18Apr 7Oct 20
1990no dataOct 27no dataNov 14
1988May 27Oct 6Apr 21Oct 7
1987Apr 11Oct 5Apr 10Oct 9
1986May 5Oct 19May 5Oct 21
1985Apr 10Nov 9Apr 10Dec 3
1984no dataNov 7no dataNov 8
1983Apr 22Sep 23Apr 21Oct 28
1982no dataOct 17no dataNov 6
1981May 9Oct 3Apr 7Oct 20
1980no dataOct 13no dataNov 2
1979Apr 19Oct 14Apr 7Oct 27
1978Apr 23Oct 9Mar 18Oct 25

"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.