Last Frost Day

Frost history / Great Basin Np, NV

Great Basin Np, NV: frost dates by year

Last spring and first fall frost at NOAA station USC00263340, 1987 to 2025, measured from daily minimum temperatures.

Elevation 6,850 ft, 39.006, -114.221. Download the data (JSON), NOAA daily records

Summary at 32°F

Last spring frostFirst fall frost
MedianMay 30Oct 2
EarliestMay 9 (2009)Sep 9 (2020)
LatestJun 22 (2025)Oct 30 (2015)
Trendlittle change (less than half a day per decade)2.3 days later per decade
Years with data3434

At 28°F (hard freeze) the median last spring date is May 10 and the median first fall date is Oct 16.

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 2919902000201020201988: May 311989: May 261990: Jun 11991: Jun 31993: Jun 71994: May 201995: Jun 211996: May 251999: May 172000: May 122001: Jun 142002: Jun 102003: May 202004: May 302005: May 172006: May 292007: Jun 72008: May 242009: May 92010: Jun 172011: Jun 32012: Jun 102013: Jun 202014: Jun 182015: May 162016: May 212017: May 192018: May 172020: Jun 82021: May 242022: May 212023: May 112024: Jun 192025: Jun 22

First fall frost (32°F)

Aug 28Sep 12Sep 27Oct 12Oct 27Nov 1119902000201020201987: Oct 161988: Sep 181989: Oct 41990: Oct 71991: Oct 241992: Sep 251993: Sep 131994: Oct 31996: Sep 171998: Oct 51999: Sep 272000: Sep 242001: Oct 102002: Oct 22003: Sep 182004: Sep 202005: Oct 42006: Sep 172008: Oct 102009: Oct 12010: Oct 262011: Oct 62012: Oct 72013: Sep 262014: Oct 22015: Oct 302016: Sep 262017: Sep 222019: Sep 302020: Sep 92021: Sep 292022: Oct 232023: Oct 272024: 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
2025Jun 22no dataApr 19no data
2024Jun 19Oct 18May 6Oct 29
2023May 11Oct 27Apr 20Oct 27
2022May 21Oct 23May 20Oct 24
2021May 24Sep 29May 22Oct 12
2020Jun 8Sep 9May 23Oct 22
2019no dataSep 30no dataOct 1
2018May 17no dataMay 17no data
2017May 19Sep 22May 15Oct 2
2016May 21Sep 26May 10Oct 6
2015May 16Oct 30Apr 27Oct 30
2014Jun 18Oct 2Jun 18Oct 27
2013Jun 20Sep 26May 18Oct 4
2012Jun 10Oct 7Apr 28Oct 24
2011Jun 3Oct 6May 2Oct 7
2010Jun 17Oct 26May 24Oct 26
2009May 9Oct 1Apr 28Oct 1
2008May 24Oct 10May 13Oct 10
2007Jun 7no dataMay 22no data
2006May 29Sep 17May 29Oct 19
2005May 17Oct 4Apr 21Oct 5
2004May 30Sep 20Apr 29Oct 28
2003May 20Sep 18May 10Oct 11
2002Jun 10Oct 2May 9Oct 29
2001Jun 14Oct 10May 2Oct 10
2000May 12Sep 24May 12Sep 24
1999May 17Sep 27May 16Sep 28
1998no dataOct 5no dataOct 5
1996May 25Sep 17Apr 29Oct 17
1995Jun 21no dataJun 7no data
1994May 20Oct 3Apr 29Oct 15
1993Jun 7Sep 13May 9Oct 9
1992no dataSep 25no dataNov 3
1991Jun 3Oct 24May 12Oct 24
1990Jun 1Oct 7May 9Oct 7
1989May 26Oct 4May 19Oct 26
1988May 31Sep 18May 8Nov 9
1987no dataOct 16no dataNov 11

"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.