Last Frost Day

Frost history / Reserve Rs, NM

Reserve Rs, NM: frost dates by year

Last spring and first fall frost at NOAA station USC00297386, 1954 to 2025, measured from daily minimum temperatures.

Elevation 5,847 ft, 33.716, -108.777. Download the data (JSON), NOAA daily records

Summary at 32°F

Last spring frostFirst fall frost
MedianJun 4Oct 4
EarliestMay 11 (1984)Sep 3 (1965)
LatestJul 3 (1992)Oct 18 (2025)
Trendlittle change (less than half a day per decade)1.6 days later per decade
Years with data3327

At 28°F (hard freeze) the median last spring date is May 21 and the median first fall date is Oct 14.

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)

Apr 30May 15May 30Jun 14Jun 29Jul 1419601970198019902000201020201955: Jun 41956: May 271957: May 271960: May 261961: Jun 41962: Jun 171963: Jun 101964: May 291965: Jun 261966: Jun 61968: Jun 101969: Jun 51970: May 151971: Jun 61973: Jun 181974: Jun 21975: Jun 51976: Jun 261977: May 281978: May 301979: May 141980: Jun 51981: Jun 161982: Jun 91983: Jun 51984: May 111985: Jun 21986: May 221987: May 291988: Jun 121989: May 311992: Jul 32025: May 27

First fall frost (32°F)

Aug 28Sep 12Sep 27Oct 12Oct 2719601970198019902000201020201954: Oct 121955: Sep 251956: Oct 111960: Oct 51961: Sep 41962: Oct 71963: Oct 51964: Oct 81965: Sep 31968: Sep 171969: Oct 61970: Sep 231972: Sep 261973: Sep 281975: Sep 231977: Oct 121978: Oct 51979: Oct 61982: Sep 291983: Oct 121984: Oct 71985: Sep 241986: Sep 171987: Oct 11991: Oct 42008: Oct 12025: Oct 18

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
2025May 27Oct 18May 1Oct 29
2008no dataOct 1no dataOct 13
1992Jul 3no dataJun 17no data
1991no dataOct 4no dataOct 15
1989May 31no dataMay 14no data
1988Jun 12no dataMay 31no data
1987May 29Oct 1May 29Oct 19
1986May 22Sep 17May 15Sep 30
1985Jun 2Sep 24May 15Oct 23
1984May 11Oct 7May 1Oct 16
1983Jun 5Oct 12Jun 5Nov 9
1982Jun 9Sep 29Jun 2Oct 2
1981Jun 16no dataMay 22no data
1980Jun 5no dataJun 4no data
1979May 14Oct 6May 13Oct 6
1978May 30Oct 5May 20Oct 11
1977May 28Oct 12May 22Oct 15
1976Jun 26no dataJun 12no data
1975Jun 5Sep 23May 23Oct 14
1974Jun 2no dataMay 25no data
1973Jun 18Sep 28May 5Sep 28
1972no dataSep 26no dataOct 23
1971Jun 6no dataJun 5no data
1970May 15Sep 23May 5Sep 23
1969Jun 5Oct 6May 10Oct 13
1968Jun 10Sep 17May 16Oct 16
1966Jun 6no dataApr 23no data
1965Jun 26Sep 3May 24Sep 3
1964May 29Oct 8May 10Oct 20
1963Jun 10Oct 5May 13Nov 2
1962Jun 17Oct 7May 25Oct 10
1961Jun 4Sep 4May 21Oct 3
1960May 26Oct 5May 25Oct 14
1957May 27no dataMay 16no data
1956May 27Oct 11May 15Oct 14
1955Jun 4Sep 25Jun 3Sep 30
1954no dataOct 12no dataOct 19

"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.