Last Frost Day

Frost history / Bridgeport 5 Nw, AL

Bridgeport 5 Nw, AL: frost dates by year

Last spring and first fall frost at NOAA station USC00011099, 1955 to 2022, measured from daily minimum temperatures.

Elevation 664 ft, 34.979, -85.801. Download the data (JSON), NOAA daily records

Summary at 32°F

Last spring frostFirst fall frost
MedianApr 11Oct 25
EarliestMar 22 (1965)Oct 4 (1987)
LatestMay 4 (1971)Nov 14 (2003)
Trend1.1 days earlier per decade1.6 days later per decade
Years with data3936

At 28°F (hard freeze) the median last spring date is Mar 28 and the median first fall date is Nov 4.

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 1519601970198019902000201020201956: Apr 211957: Apr 151958: Apr 121959: Apr 151960: Apr 111961: Apr 291962: Apr 161963: Apr 151964: Apr 101965: Mar 221966: Apr 111967: Mar 231968: Apr 61969: Apr 241970: Apr 81971: May 41972: Apr 91986: Apr 241987: Apr 71989: Apr 131990: Apr 141991: Mar 311992: Apr 51993: Apr 231994: Apr 81995: Apr 11996: Apr 121998: Apr 121999: Mar 282000: Apr 92001: Apr 212003: Apr 12004: Mar 232006: Mar 272007: Apr 112008: Mar 262018: Apr 172021: Apr 222022: Apr 10

First fall frost (32°F)

Sep 27Oct 12Oct 27Nov 11Nov 2619601970198019902000201020201955: Oct 171956: Nov 91957: Oct 271960: Oct 211961: Oct 161962: Oct 241963: Oct 301964: Oct 81965: Oct 251966: Oct 201967: Oct 111968: Oct 51969: Oct 181970: Nov 31971: Nov 41985: Nov 81986: Nov 141987: Oct 41988: Oct 131989: Oct 211990: Oct 261991: Oct 71992: Nov 81993: Oct 281994: Nov 21995: Nov 41996: Oct 201999: Oct 242000: Oct 92003: Nov 142005: Oct 272006: Oct 152017: Oct 302018: Nov 102019: Nov 12021: Nov 7

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
2022Apr 10no dataMar 14no data
2021Apr 22Nov 7Feb 22Nov 23
2019no dataNov 1no dataNov 9
2018Apr 17Nov 10Mar 22Nov 11
2017no dataOct 30no dataOct 30
2008Mar 26no dataMar 26no data
2007Apr 11no dataApr 8no data
2006Mar 27Oct 15Mar 27Nov 3
2005no dataOct 27no dataNov 17
2004Mar 23no dataMar 23no data
2003Apr 1Nov 14Mar 31Nov 14
2001Apr 21no dataMar 28no data
2000Apr 9Oct 9Mar 13Nov 18
1999Mar 28Oct 24Mar 26Nov 3
1998Apr 12no dataMar 15no data
1996Apr 12Oct 20Apr 10Nov 3
1995Apr 1Nov 4Mar 11Nov 5
1994Apr 8Nov 2Apr 1Nov 24
1993Apr 23Oct 28Mar 17Nov 1
1992Apr 5Nov 8Apr 4Nov 8
1991Mar 31Oct 7Mar 11Nov 4
1990Apr 14Oct 26Apr 8Nov 30
1989Apr 13Oct 21Apr 13Oct 21
1988no dataOct 13no dataNov 29
1987Apr 7Oct 4Apr 7Oct 8
1986Apr 24Nov 14Mar 23Nov 14
1985no dataNov 8no dataNov 8
1972Apr 9no dataApr 2no data
1971May 4Nov 4Apr 8Nov 5
1970Apr 8Nov 3Apr 3Nov 3
1969Apr 24Oct 18Mar 31Nov 5
1968Apr 6Oct 5Mar 25Oct 26
1967Mar 23Oct 11Mar 19Oct 28
1966Apr 11Oct 20Apr 10Nov 3
1965Mar 22Oct 25Mar 22Oct 25
1964Apr 10Oct 8Apr 10Oct 20
1963Apr 15Oct 30Mar 23Oct 30
1962Apr 16Oct 24Apr 16Oct 24
1961Apr 29Oct 16Apr 7Oct 27
1960Apr 11Oct 21Apr 11Nov 4
1959Apr 15no dataMar 19no data
1958Apr 12no dataApr 8no data
1957Apr 15Oct 27Apr 15Oct 27
1956Apr 21Nov 9Mar 25Nov 10
1955no dataOct 17no dataOct 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.