Last Frost Day

Frost history / Old Town 2 W, ME

Old Town 2 W, ME: frost dates by year

Last spring and first fall frost at NOAA station USW00094644, 2003 to 2024, measured from daily minimum temperatures.

Elevation 127 ft, 44.928, -68.701. Download the data (JSON), NOAA daily records

Summary at 32°F

Last spring frostFirst fall frost
MedianMay 16Sep 27
EarliestMay 1 (2016)Aug 8 (2023)
LatestJun 2 (2020)Oct 29 (2021)
Trend0.7 days later per decade6.1 days earlier per decade
Years with data2222

At 28°F (hard freeze) the median last spring date is Apr 30 and the median first fall date is Oct 15.

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 14201020202003: May 172004: May 102005: May 142006: May 92007: May 232008: May 302009: May 262010: May 132011: May 22012: May 72013: May 192014: May 292015: May 142016: May 12017: May 42018: May 192019: May 282020: Jun 22021: May 82022: May 192023: May 182024: May 12

First fall frost (32°F)

Jul 29Aug 13Aug 28Sep 12Sep 27Oct 12Oct 27Nov 11201020202003: Oct 62004: Oct 42005: Oct 212006: Oct 62007: Sep 172008: Sep 192009: Sep 252010: Oct 32011: Oct 62012: Sep 282013: Sep 172014: Sep 192015: Sep 272016: Sep 262017: Sep 302018: Sep 92019: Sep 192020: Sep 192021: Oct 292022: Sep 302023: Aug 82024: Oct 16

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
2024May 12Oct 16Apr 27Oct 17
2023May 18Aug 8Apr 21Nov 1
2022May 19Sep 30May 8Oct 3
2021May 8Oct 29Apr 4Nov 3
2020Jun 2Sep 19May 6Sep 19
2019May 28Sep 19May 9Oct 6
2018May 19Sep 9May 12Oct 18
2017May 4Sep 30Apr 14Oct 3
2016May 1Sep 26May 1Oct 14
2015May 14Sep 27Apr 20Oct 17
2014May 29Sep 19Apr 20Sep 19
2013May 19Sep 17Apr 27Oct 24
2012May 7Sep 28May 7Oct 24
2011May 2Oct 6Apr 23Oct 7
2010May 13Oct 3May 13Oct 14
2009May 26Sep 25Apr 20Sep 26
2008May 30Sep 19May 3Oct 18
2007May 23Sep 17Apr 26Oct 17
2006May 9Oct 6May 8Oct 7
2005May 14Oct 21May 14Oct 22
2004May 10Oct 4Apr 29Oct 5
2003May 17Oct 6May 4Oct 20

"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.