Last Frost Day

Frost history / Kit Carson, CO

Kit Carson, CO: frost dates by year

Last spring and first fall frost at NOAA station USC00054603, 1951 to 2016, measured from daily minimum temperatures.

Elevation 4,302 ft, 38.763, -102.800. Download the data (JSON), NOAA daily records

Summary at 32°F

Last spring frostFirst fall frost
MedianMay 11Oct 3
EarliestApr 16 (2012)Sep 14 (1989)
LatestJun 6 (1998)Nov 1 (1963)
Trendlittle change (less than half a day per decade)little change (less than half a day per decade)
Years with data5649

At 28°F (hard freeze) the median last spring date is Apr 28 and the median first fall date is Oct 11.

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 31Apr 15Apr 30May 15May 30Jun 141960197019801990200020101951: May 31952: May 191953: May 141954: Jun 31955: Apr 281958: Apr 301959: Apr 281960: May 71961: May 11962: May 11964: May 291965: May 111966: May 131967: May 151968: May 191969: Apr 281970: May 151971: May 131972: May 31973: May 31974: Apr 221975: May 71976: May 171978: May 131979: May 111980: Apr 191981: May 141982: May 61983: May 161988: May 81989: May 61990: May 101991: May 61994: May 11995: May 181996: May 11997: May 101998: Jun 61999: May 122000: May 192001: Apr 252002: May 252003: May 112004: May 142005: May 142006: May 162007: Apr 262008: May 122009: May 142010: May 142011: May 162012: Apr 162013: May 62014: May 142015: May 102016: May 2

First fall frost (32°F)

Aug 28Sep 12Sep 27Oct 12Oct 27Nov 111960197019801990200020101951: Sep 161953: Oct 41957: Sep 221958: Oct 11963: Nov 11964: Sep 281965: Sep 171966: Oct 11967: Oct 81968: Oct 31969: Oct 61970: Sep 261971: Sep 171972: Oct 181973: Oct 111974: Oct 151975: Sep 221976: Sep 291979: Oct 41980: Oct 111981: Oct 171982: Oct 71983: Sep 201984: Sep 281986: Sep 301989: Sep 141990: Oct 91991: Sep 201994: Sep 221995: Sep 211996: Sep 271997: Oct 91998: Oct 61999: Sep 292000: Sep 242001: Oct 62003: Sep 142004: Oct 92005: Oct 72006: Sep 182007: Oct 82008: Oct 72009: Sep 222010: Oct 132011: Oct 102012: Oct 72013: Sep 292014: Oct 42015: Oct 16

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
2016May 2no dataMay 2no data
2015May 10Oct 16Apr 13Oct 31
2014May 14Oct 4May 14Oct 28
2013May 6Sep 29May 5Oct 5
2012Apr 16Oct 7Apr 16Oct 8
2011May 16Oct 10May 3Oct 10
2010May 14Oct 13May 14Oct 26
2009May 14Sep 22May 14Oct 2
2008May 12Oct 7May 11Oct 24
2007Apr 26Oct 8Apr 26Oct 8
2006May 16Sep 18Apr 26Oct 19
2005May 14Oct 7May 3Oct 7
2004May 14Oct 9Apr 14Oct 14
2003May 11Sep 14Apr 20Oct 14
2002May 25no dataMay 25no data
2001Apr 25Oct 6Apr 24Oct 6
2000May 19Sep 24May 13Sep 25
1999May 12Sep 29Apr 18Sep 29
1998Jun 6Oct 6Apr 30Oct 18
1997May 10Oct 9May 3Oct 25
1996May 1Sep 27Apr 30Oct 18
1995May 18Sep 21Apr 28Oct 7
1994May 1Sep 22Apr 28Oct 24
1991May 6Sep 20May 1Oct 5
1990May 10Oct 9May 10Oct 9
1989May 6Sep 14May 2Oct 18
1988May 8no dataApr 27no data
1986no dataSep 30no dataOct 11
1984no dataSep 28no dataOct 15
1983May 16Sep 20Apr 18Sep 21
1982May 6Oct 7Apr 22Oct 11
1981May 14Oct 17May 10Oct 21
1980Apr 19Oct 11Apr 18Oct 17
1979May 11Oct 4May 10Oct 10
1978May 13no dataMay 13no data
1976May 17Sep 29Apr 25Oct 8
1975May 7Sep 22May 7Oct 1
1974Apr 22Oct 15Apr 16Oct 15
1973May 3Oct 11Apr 27Oct 27
1972May 3Oct 18Apr 9Oct 23
1971May 13Sep 17Apr 9Sep 19
1970May 15Sep 26May 2Sep 26
1969Apr 28Oct 6Apr 28Oct 6
1968May 19Oct 3May 8Oct 17
1967May 15Oct 8May 2Oct 11
1966May 13Oct 1May 13Oct 1
1965May 11Sep 17Apr 28Oct 21
1964May 29Sep 28Apr 14Oct 5
1963no dataNov 1no dataNov 1
1962May 1no dataApr 24no data
1961May 1no dataApr 16no data
1960May 7no dataApr 5no data
1959Apr 28no dataApr 21no data
1958Apr 30Oct 1Apr 24Oct 1
1957no dataSep 22no dataOct 24
1955Apr 28no dataApr 28no data
1954Jun 3no dataMay 2no data
1953May 14Oct 4May 14Oct 4
1952May 19no dataApr 13no data
1951May 3Sep 16Apr 22Sep 16

"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.