Last Frost Day

Frost history / Moffit 3 Se, ND

Moffit 3 Se, ND: frost dates by year

Last spring and first fall frost at NOAA station USC00326015, 1953 to 2025, measured from daily minimum temperatures.

Elevation 1,800 ft, 46.671, -100.229. Download the data (JSON), NOAA daily records

Summary at 32°F

Last spring frostFirst fall frost
MedianMay 15Sep 19
EarliestApr 25 (1978)Aug 12 (1964)
LatestJul 4 (1972)Oct 21 (2021)
Trend3.1 days earlier per decade4.5 days later per decade
Years with data4539

At 28°F (hard freeze) the median last spring date is May 7 and the median first fall date is Sep 23.

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 29Jul 1419601970198019902000201020201954: May 191955: May 101956: May 151957: May 161958: May 201959: May 231960: May 111962: May 11963: May 231964: Jun 21965: May 281966: May 131967: Jul 31968: May 241969: Jun 201970: May 261971: May 201972: Jul 41973: May 141974: May 241975: May 301976: May 71978: Apr 251980: May 141981: May 151982: May 71983: May 201984: May 281986: May 171987: May 221988: May 131989: May 61990: May 121991: May 71992: May 261993: May 201994: May 22016: May 172017: May 12018: Apr 282021: May 112022: May 32023: May 32024: Apr 302025: Apr 30

First fall frost (32°F)

Jul 29Aug 13Aug 28Sep 12Sep 27Oct 12Oct 2719601970198019902000201020201953: Sep 181954: Sep 211955: Sep 111956: Aug 201957: Sep 131958: Sep 251960: Sep 131961: Sep 231962: Sep 41963: Sep 291964: Aug 121965: Sep 51966: Sep 141967: Sep 271969: Sep 81970: Sep 131971: Sep 191972: Sep 51974: Sep 11978: Sep 201979: Sep 141981: Sep 11982: Sep 151983: Sep 191984: Sep 41986: Oct 111987: Oct 21988: Oct 21989: Sep 121990: Sep 231991: Sep 191992: Sep 221993: Sep 142015: Oct 162016: Oct 62017: Oct 92018: Sep 282021: Oct 212023: Oct 7

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 30no dataApr 30no data
2024Apr 30no dataApr 22no data
2023May 3Oct 7May 2Oct 26
2022May 3no dataApr 28no data
2021May 11Oct 21May 11Oct 21
2018Apr 28Sep 28Apr 20Oct 4
2017May 1Oct 9Apr 29Oct 15
2016May 17Oct 6Apr 13Oct 8
2015no dataOct 16no dataNov 7
1994May 2no dataMay 1no data
1993May 20Sep 14May 2Sep 14
1992May 26Sep 22May 26Sep 28
1991May 7Sep 19May 7Sep 19
1990May 12Sep 23May 10Sep 23
1989May 6Sep 12May 6Sep 23
1988May 13Oct 2Apr 27Oct 4
1987May 22Oct 2May 22Oct 2
1986May 17Oct 11May 1Oct 12
1984May 28Sep 4May 26Sep 23
1983May 20Sep 19May 16Sep 22
1982May 7Sep 15May 7Sep 20
1981May 15Sep 1May 10Oct 6
1980May 14no dataMay 14no data
1979no dataSep 14no dataSep 21
1978Apr 25Sep 20Apr 21Sep 20
1976May 7no dataMay 7no data
1975May 30no dataMay 1no data
1974May 24Sep 1May 24Sep 2
1973May 14no dataMay 14no data
1972Jul 4Sep 5May 4Sep 29
1971May 20Sep 19May 20Sep 22
1970May 26Sep 13May 4Sep 13
1969Jun 20Sep 8Jun 20Oct 8
1968May 24no dataMay 20no data
1967Jul 3Sep 27May 5Sep 27
1966May 13Sep 14May 9Sep 14
1965May 28Sep 5May 28Sep 5
1964Jun 2Aug 12May 31Sep 11
1963May 23Sep 29May 23Oct 11
1962May 1Sep 4Apr 18Sep 4
1961no dataSep 23no dataSep 28
1960May 11Sep 13May 11Sep 13
1959May 23no dataMay 23no data
1958May 20Sep 25May 1Sep 30
1957May 16Sep 13Apr 27Sep 16
1956May 15Aug 20May 4Sep 29
1955May 10Sep 11Apr 16Sep 11
1954May 19Sep 21May 9Oct 2
1953no dataSep 18no dataSep 21

"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.