Last Frost Day

Frost history / Selah 2 Ne, WA

Selah 2 Ne, WA: frost dates by year

Last spring and first fall frost at NOAA station USC00457522, 1999 to 2025, measured from daily minimum temperatures.

Elevation 1,120 ft, 46.672, -120.499. Download the data (JSON), NOAA daily records

Summary at 32°F

Last spring frostFirst fall frost
MedianMay 9Oct 3
EarliestApr 19 (2005)Sep 22 (2002)
LatestMay 29 (2001)Oct 17 (2011)
Trend4.7 days earlier per decade2.3 days later per decade
Years with data2322

At 28°F (hard freeze) the median last spring date is May 1 and the median first fall date is Oct 13.

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 142000201020201999: May 152000: May 122001: May 292002: May 162003: May 192004: Apr 222005: Apr 192006: May 132007: May 52008: May 102009: May 202010: May 92011: May 82012: May 122013: May 22016: Apr 262017: May 152018: Apr 242019: May 12020: May 82022: May 132024: May 72025: Apr 24

First fall frost (32°F)

Sep 12Sep 27Oct 12Oct 272000201020201999: Sep 262000: Sep 232001: Sep 292002: Sep 222003: Oct 92004: Oct 102005: Oct 22006: Oct 92007: Sep 292008: Sep 232010: Oct 132011: Oct 172012: Oct 32013: Oct 42016: Oct 122017: Oct 42018: Oct 32019: Oct 12021: Oct 72023: Sep 302024: Oct 32025: Oct 6

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
2025Apr 24Oct 6Apr 13Oct 14
2024May 7Oct 3May 7Oct 22
2023no dataSep 30no dataOct 28
2022May 13no dataMay 8no data
2021no dataOct 7no dataOct 12
2020May 8no dataMay 8no data
2019May 1Oct 1Apr 14Oct 1
2018Apr 24Oct 3Apr 3Oct 15
2017May 15Oct 4Apr 27Oct 11
2016Apr 26Oct 12Mar 29Oct 12
2013May 2Oct 4May 1Oct 15
2012May 12Oct 3Apr 13Oct 4
2011May 8Oct 17May 1Oct 25
2010May 9Oct 13May 4Oct 17
2009May 20no dataApr 24no data
2008May 10Sep 23Apr 26Oct 8
2007May 5Sep 29May 3Oct 26
2006May 13Oct 9Apr 22Oct 10
2005Apr 19Oct 2Apr 18Oct 27
2004Apr 22Oct 10Apr 19Oct 24
2003May 19Oct 9May 19Oct 31
2002May 16Sep 22May 8Sep 30
2001May 29Sep 29May 2Sep 29
2000May 12Sep 23May 6Sep 23
1999May 15Sep 26May 11Sep 28

"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.