Last Frost Day

Frost history / Downsville Dam, NY

Downsville Dam, NY: frost dates by year

Last spring and first fall frost at NOAA station USC00302169, 1959 to 2025, measured from daily minimum temperatures.

Elevation 1,200 ft, 42.077, -74.983. Download the data (JSON), NOAA daily records

Summary at 32°F

Last spring frostFirst fall frost
MedianMay 18Oct 2
EarliestApr 28 (2025)Aug 30 (1965)
LatestJun 15 (1978)Nov 4 (1971)
Trend1.7 days earlier per decade2.2 days later per decade
Years with data3539

At 28°F (hard freeze) the median last spring date is May 7 and the median first fall date is Oct 17.

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 2919601970198019902000201020201961: May 311964: Jun 51965: May 311966: May 111967: May 311968: May 81969: May 271970: May 81971: May 241972: Jun 111973: May 191974: May 81975: May 61976: May 231977: May 161978: Jun 151979: May 31980: Jun 111982: May 111983: May 281984: May 181985: May 92010: May 122011: May 92012: May 142013: May 282014: May 192015: May 262016: May 122019: Apr 292020: May 312022: May 112023: May 252024: May 142025: Apr 28

First fall frost (32°F)

Aug 13Aug 28Sep 12Sep 27Oct 12Oct 27Nov 1119601970198019902000201020201959: Sep 171960: Oct 21961: Sep 291962: Sep 221964: Sep 161965: Aug 301966: Sep 161967: Oct 71968: Oct 61969: Oct 161970: Oct 171971: Nov 41972: Oct 11973: Oct 161974: Sep 241975: Sep 151976: Aug 311977: Oct 71978: Sep 261979: Sep 201980: Sep 291981: Sep 301982: Oct 111983: Sep 231984: Sep 162010: Oct 102011: Sep 152013: Sep 172014: Oct 52015: Oct 112016: Oct 112017: Oct 162018: Oct 152019: Oct 52020: Sep 182021: Nov 12022: Oct 82023: Oct 232024: Oct 12

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 28no dataApr 18no data
2024May 14Oct 12May 14Oct 17
2023May 25Oct 23May 25Nov 1
2022May 11Oct 8Apr 30Oct 18
2021no dataNov 1no dataNov 2
2020May 31Sep 18May 14Oct 17
2019Apr 29Oct 5Apr 29Oct 23
2018no dataOct 15no dataOct 17
2017no dataOct 16no dataOct 30
2016May 12Oct 11May 11Oct 27
2015May 26Oct 11Apr 27Oct 18
2014May 19Oct 5May 7Oct 11
2013May 28Sep 17May 14Sep 24
2012May 14no dataMay 2no data
2011May 9Sep 15May 9Oct 28
2010May 12Oct 10May 12Oct 11
1985May 9no dataMay 9no data
1984May 18Sep 16Apr 22Oct 6
1983May 28Sep 23May 18Oct 11
1982May 11Oct 11Apr 19Oct 18
1981no dataSep 30no dataOct 17
1980Jun 11Sep 29Apr 23Oct 10
1979May 3Sep 20Apr 30Oct 11
1978Jun 15Sep 26May 4Sep 26
1977May 16Oct 7May 15Oct 23
1976May 23Aug 31May 13Oct 12
1975May 6Sep 15Apr 28Oct 3
1974May 8Sep 24May 5Sep 24
1973May 19Oct 16Apr 16Nov 6
1972Jun 11Oct 1May 11Oct 10
1971May 24Nov 4Apr 24Nov 4
1970May 8Oct 17May 7Oct 17
1969May 27Oct 16May 27Oct 23
1968May 8Oct 6May 7Oct 31
1967May 31Oct 7May 17Oct 27
1966May 11Sep 16May 11Oct 21
1965May 31Aug 30May 30Oct 5
1964Jun 5Sep 16Apr 12Oct 6
1962no dataSep 22no dataOct 25
1961May 31Sep 29May 6Oct 17
1960no dataOct 2no dataOct 22
1959no dataSep 17no dataOct 19

"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.