Last Frost Day

Frost history / Lingle 2WSW, WY

Lingle 2WSW, WY: frost dates by year

Last spring and first fall frost at NOAA station USC00485612, 1952 to 2025, measured from daily minimum temperatures.

Elevation 4,158 ft, 42.130, -104.390. Download the data (JSON), NOAA daily records

Summary at 32°F

Last spring frostFirst fall frost
MedianMay 14Sep 21
EarliestApr 28 (2018)Sep 3 (2010)
LatestJun 15 (2014)Oct 8 (2022)
Trend1.8 days later per decadelittle change (less than half a day per decade)
Years with data1919

At 28°F (hard freeze) the median last spring date is May 10 and the median first fall date is Oct 3.

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 15Apr 30May 15May 30Jun 14Jun 2919601970198019902000201020201953: May 141954: May 41955: May 102008: May 142009: May 52010: May 142011: May 132012: May 142013: Jun 22014: Jun 152015: May 212016: May 172017: May 222018: Apr 282019: Jun 102020: May 82022: May 262024: May 222025: May 22

First fall frost (32°F)

Aug 28Sep 12Sep 27Oct 12Oct 2719601970198019902000201020201952: Sep 221953: Sep 211954: Sep 212009: Sep 282010: Sep 32011: Sep 212012: Sep 92013: Sep 202014: Sep 122015: Sep 202016: Sep 102017: Sep 62018: Sep 262019: Sep 232021: Sep 212022: Oct 82023: Sep 252024: Sep 232025: Sep 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
2025May 22Sep 6May 3Oct 13
2024May 22Sep 23May 4Oct 1
2023no dataSep 25no dataOct 7
2022May 26Oct 8May 22Oct 10
2021no dataSep 21no dataOct 3
2020May 8no dataMay 8no data
2019Jun 10Sep 23May 13Oct 3
2018Apr 28Sep 26Apr 27Sep 26
2017May 22Sep 6May 4Oct 10
2016May 17Sep 10May 17Sep 10
2015May 21Sep 20May 12Oct 17
2014Jun 15Sep 12May 15Sep 13
2013Jun 2Sep 20May 5Oct 7
2012May 14Sep 9May 14Oct 7
2011May 13Sep 21May 3Sep 21
2010May 14Sep 3May 14Sep 7
2009May 5Sep 28Apr 14Sep 28
2008May 14no dataMay 14no data
1955May 10no dataMay 10no data
1954May 4Sep 21May 3Oct 19
1953May 14Sep 21May 13Sep 21
1952no dataSep 22no dataOct 6

"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.