Last Frost Day

Frost history / Paradise Valley 1 Nw, NV

Paradise Valley 1 Nw, NV: frost dates by year

Last spring and first fall frost at NOAA station USC00266005, 1955 to 2009, measured from daily minimum temperatures.

Elevation 4,560 ft, 41.502, -117.548. Download the data (JSON), NOAA daily records

Summary at 32°F

Last spring frostFirst fall frost
MedianJun 11Sep 9
EarliestMay 13 (1958)Aug 3 (1964)
LatestJul 21 (2001)Oct 24 (1963)
Trend2.7 days later per decade0.5 days earlier per decade
Years with data5048

At 28°F (hard freeze) the median last spring date is May 24 and the median first fall date is Sep 19.

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 14Jul 29196019701980199020001955: Jul 71956: Jun 51957: May 241958: May 131959: Jun 101960: May 251961: May 271962: Jun 71963: Jun 301964: May 211965: May 181966: Jun 251967: Jun 21968: Jul 11969: May 201970: Jun 111971: Jun 31972: Jun 111973: Jun 191974: Jun 81975: May 261976: Jun 141977: May 281978: Jun 111979: Jun 171980: Jun 271981: Jun 151982: Jun 91984: Jun 111985: Jun 11986: Jul 171987: Jun 21988: May 311989: Jun 211990: Jun 131991: Jul 161992: Jun 151993: Jul 31994: Jun 151995: May 271999: Jun 92000: Jul 42001: Jul 212003: May 302004: Jun 82005: Jun 212006: May 302007: Jun 112008: Jun 82009: Jun 22

First fall frost (32°F)

Jul 29Aug 13Aug 28Sep 12Sep 27Oct 12Oct 27Nov 11196019701980199020001956: Sep 221957: Sep 91958: Sep 201959: Sep 151960: Aug 231961: Sep 31962: Sep 91963: Oct 241964: Aug 31965: Aug 291966: Sep 141967: Sep 131968: Aug 221969: Sep 41970: Sep 91971: Sep 81972: Sep 121973: Sep 21974: Aug 211975: Sep 21976: Sep 71977: Aug 311978: Aug 181979: Oct 161980: Sep 211981: Sep 221982: Sep 111983: Sep 101984: Sep 21985: Sep 101986: Sep 101987: Sep 41988: Sep 111989: Aug 251990: Oct 31991: Sep 131992: Aug 231994: Sep 111995: Sep 211998: Sep 221999: Aug 302001: Aug 182002: Sep 52003: Sep 132004: Sep 42006: Aug 232008: Sep 22009: Sep 21

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
2009Jun 22Sep 21May 13Sep 29
2008Jun 8Sep 2Jun 8Oct 10
2007Jun 11no dataJun 6no data
2006May 30Aug 23May 10Aug 23
2005Jun 21no dataJun 21no data
2004Jun 8Sep 4May 15Sep 21
2003May 30Sep 13May 20Oct 11
2002no dataSep 5no dataSep 26
2001Jul 21Aug 18Jul 21Aug 18
2000Jul 4no dataMay 12no data
1999Jun 9Aug 30Jun 7Aug 31
1998no dataSep 22no dataOct 4
1995May 27Sep 21May 13Sep 21
1994Jun 15Sep 11Jun 14Oct 3
1993Jul 3no dataMay 8no data
1992Jun 15Aug 23Jun 15Aug 24
1991Jul 16Sep 13Jul 16Oct 2
1990Jun 13Oct 3Jun 11Oct 4
1989Jun 21Aug 25May 29Sep 26
1988May 31Sep 11May 31Sep 11
1987Jun 2Sep 4May 3Sep 5
1986Jul 17Sep 10May 22Sep 10
1985Jun 1Sep 10May 30Sep 19
1984Jun 11Sep 2Jun 1Sep 10
1983no dataSep 10no dataSep 10
1982Jun 9Sep 11Jun 6Sep 11
1981Jun 15Sep 22Jun 14Sep 23
1980Jun 27Sep 21Apr 16Sep 22
1979Jun 17Oct 16May 30Oct 26
1978Jun 11Aug 18May 31Sep 12
1977May 28Aug 31May 21Sep 21
1976Jun 14Sep 7Jun 14Oct 3
1975May 26Sep 2May 26Oct 8
1974Jun 8Aug 21Jun 8Sep 28
1973Jun 19Sep 2Jun 18Sep 2
1972Jun 11Sep 12May 15Sep 12
1971Jun 3Sep 8May 19Sep 15
1970Jun 11Sep 9May 14Sep 14
1969May 20Sep 4May 15Sep 4
1968Jul 1Aug 22May 17Sep 21
1967Jun 2Sep 13May 14Sep 13
1966Jun 25Sep 14Jun 4Sep 14
1965May 18Aug 29May 18Sep 17
1964May 21Aug 3May 11Sep 20
1963Jun 30Oct 24Apr 29Oct 24
1962Jun 7Sep 9Jun 4Sep 9
1961May 27Sep 3May 16Sep 22
1960May 25Aug 23May 22Aug 23
1959Jun 10Sep 15May 30Sep 16
1958May 13Sep 20May 13Sep 24
1957May 24Sep 9May 3Sep 19
1956Jun 5Sep 22Jun 5Sep 22
1955Jul 7no dataMay 18no data

"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.