Last Frost Day

Frost history / Grand Junction Walker Fld, CO

Grand Junction Walker Fld, CO: frost dates by year

Last spring and first fall frost at NOAA station USW00023066, 1951 to 2024, measured from daily minimum temperatures.

Elevation 4,858 ft, 39.134, -108.540. Download the data (JSON), NOAA daily records

Summary at 32°F

Last spring frostFirst fall frost
MedianApr 26Oct 17
EarliestMar 25 (1992)Sep 17 (2006)
LatestMay 21 (2022)Nov 26 (1965)
Trend0.8 days later per decade1.7 days earlier per decade
Years with data7474

At 28°F (hard freeze) the median last spring date is Apr 12 and the median first fall date is Oct 31.

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 3019601970198019902000201020201951: Apr 111952: Apr 21953: May 111954: Apr 81955: Apr 281956: Apr 91957: Apr 261958: Apr 261959: Apr 191960: Apr 251961: Apr 261962: Apr 301963: Apr 231964: Apr 251965: Apr 141966: Apr 271967: May 141968: May 71969: Apr 271970: May 21971: Apr 261972: May 11973: Apr 91974: Apr 151975: May 61976: Apr 271977: Apr 211978: May 61979: May 111980: Apr 141981: Apr 61982: Apr 211983: Apr 171984: Apr 291985: Apr 231986: May 51987: Apr 211988: May 71989: Apr 101990: Apr 301991: May 51992: Mar 251993: Apr 191994: Apr 121995: Apr 241996: Apr 291997: May 31998: Apr 211999: May 62000: May 122001: Apr 232002: May 92003: Apr 202004: Mar 292005: Apr 302006: Apr 202007: Apr 192008: May 32009: Apr 272010: May 72011: May 22012: Apr 82013: May 32014: May 142015: Apr 192016: Apr 192017: Apr 302018: Apr 182019: May 32020: Apr 172021: Apr 212022: May 212023: Apr 212024: May 8

First fall frost (32°F)

Sep 12Sep 27Oct 12Oct 27Nov 11Nov 26Dec 1119601970198019902000201020201951: Oct 221952: Oct 151953: Oct 241954: Oct 261955: Oct 71956: Oct 241957: Nov 61958: Oct 211959: Oct 81960: Oct 291961: Oct 231962: Nov 81963: Nov 11964: Oct 241965: Nov 261966: Nov 21967: Oct 161968: Oct 161969: Oct 51970: Oct 81971: Sep 181972: Oct 291973: Oct 271974: Nov 51975: Oct 81976: Oct 181977: Nov 11978: Sep 201979: Oct 221980: Oct 231981: Oct 251982: Oct 111983: Nov 91984: Oct 241985: Sep 301986: Oct 121987: Oct 211988: Nov 51989: Oct 181990: Oct 91991: Oct 281992: Oct 81993: Oct 271994: Oct 261995: Oct 61996: Sep 271997: Oct 121998: Oct 61999: Sep 292000: Oct 142001: Oct 242002: Oct 142003: Oct 142004: Oct 312005: Oct 52006: Sep 172007: Oct 72008: Oct 122009: Oct 12010: Oct 252011: Oct 72012: Oct 72013: Oct 32014: Oct 132015: Oct 282016: Oct 42017: Sep 252018: Oct 142019: Oct 102020: Oct 242021: Oct 152022: Oct 242023: Oct 292024: Nov 1

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
2024May 8Nov 1Apr 7Nov 7
2023Apr 21Oct 29Apr 21Oct 30
2022May 21Oct 24Apr 14Nov 4
2021Apr 21Oct 15Apr 20Nov 17
2020Apr 17Oct 24Apr 17Oct 25
2019May 3Oct 10Apr 12Oct 11
2018Apr 18Oct 14Apr 18Oct 15
2017Apr 30Sep 25Apr 30Oct 10
2016Apr 19Oct 4Mar 27Nov 18
2015Apr 19Oct 28Apr 9Nov 7
2014May 14Oct 13May 1Nov 4
2013May 3Oct 3Apr 19Nov 4
2012Apr 8Oct 7Apr 8Oct 25
2011May 2Oct 7May 2Oct 30
2010May 7Oct 25Apr 2Nov 10
2009Apr 27Oct 1Apr 7Oct 1
2008May 3Oct 12May 2Oct 12
2007Apr 19Oct 7Apr 19Oct 22
2006Apr 20Sep 17Apr 20Nov 1
2005Apr 30Oct 5Apr 11Nov 15
2004Mar 29Oct 31Mar 28Nov 2
2003Apr 20Oct 14Apr 8Oct 26
2002May 9Oct 14May 9Nov 2
2001Apr 23Oct 24Apr 13Oct 24
2000May 12Oct 14Apr 3Nov 3
1999May 6Sep 29Apr 17Oct 30
1998Apr 21Oct 6Mar 30Nov 7
1997May 3Oct 12Apr 14Oct 13
1996Apr 29Sep 27Apr 29Oct 17
1995Apr 24Oct 6Apr 11Oct 23
1994Apr 12Oct 26Mar 30Oct 31
1993Apr 19Oct 27Apr 13Oct 27
1992Mar 25Oct 8Mar 10Nov 4
1991May 5Oct 28Apr 28Oct 28
1990Apr 30Oct 9Mar 16Nov 4
1989Apr 10Oct 18Apr 10Oct 29
1988May 7Nov 5Apr 10Nov 16
1987Apr 21Oct 21Apr 3Nov 15
1986May 5Oct 12Apr 14Oct 13
1985Apr 23Sep 30Mar 30Nov 13
1984Apr 29Oct 24Apr 12Nov 10
1983Apr 17Nov 9Apr 15Nov 22
1982Apr 21Oct 11Apr 21Nov 12
1981Apr 6Oct 25Apr 5Oct 31
1980Apr 14Oct 23Apr 14Oct 24
1979May 11Oct 22Apr 3Oct 31
1978May 6Sep 20Apr 22Oct 26
1977Apr 21Nov 1Apr 4Nov 1
1976Apr 27Oct 18Apr 27Oct 19
1975May 6Oct 8Apr 29Oct 24
1974Apr 15Nov 5Apr 13Nov 17
1973Apr 9Oct 27Apr 9Nov 5
1972May 1Oct 29May 1Oct 30
1971Apr 26Sep 18Apr 5Oct 29
1970May 2Oct 8May 2Oct 27
1969Apr 27Oct 5Apr 26Nov 2
1968May 7Oct 16May 7Oct 17
1967May 14Oct 16Apr 21Oct 27
1966Apr 27Nov 2Apr 20Nov 2
1965Apr 14Nov 26Mar 25Nov 28
1964Apr 25Oct 24Mar 28Nov 11
1963Apr 23Nov 1Apr 3Nov 17
1962Apr 30Nov 8Mar 31Nov 8
1961Apr 26Oct 23Apr 15Oct 29
1960Apr 25Oct 29Apr 25Oct 30
1959Apr 19Oct 8Apr 11Nov 5
1958Apr 26Oct 21Apr 1Oct 21
1957Apr 26Nov 6Apr 8Nov 15
1956Apr 9Oct 24Apr 6Nov 2
1955Apr 28Oct 7Apr 5Oct 28
1954Apr 8Oct 26Mar 31Oct 27
1953May 11Oct 24Apr 15Nov 19
1952Apr 2Oct 15Apr 1Nov 9
1951Apr 11Oct 22Apr 11Nov 1

"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.