Rochester, MA: frost dates by year

Last spring and first fall frost at NOAA station USC00196938, 1952 to 2025, measured from daily minimum temperatures.

Elevation 65 ft, 41.785, -70.918. Download the data (JSON), NOAA daily records

Summary at 32°F

	Last spring frost	First fall frost
Median	Apr 24	Oct 16
Earliest	Apr 4 (2017)	Sep 19 (1956)
Latest	May 31 (1961)	Nov 15 (2022)
Trend	3.3 days earlier per decade	3.7 days later per decade
Years with data	70	71

At 28°F (hard freeze) the median last spring date is Apr 13 and the median first fall date is Oct 31.

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)

First fall frost (32°F)

Dots are single years. The gray line is the median, the green line the fitted trend.

Year by year

Year	Last spring 32°F	First fall 32°F	Last spring 28°F	First fall 28°F
2025	Apr 18	Oct 10	Apr 11	Nov 7
2024	Apr 27	Oct 29	Apr 26	Nov 10
2023	May 18	Nov 2	Apr 10	Nov 3
2022	Apr 21	Nov 15	Mar 31	Nov 15
2021	Apr 22	Nov 6	Apr 5	Nov 6
2020	Apr 25	Oct 31	Apr 21	Oct 31
2019	Apr 11	Nov 3	Apr 3	Nov 9
2018	Apr 22	Oct 22	Apr 12	Oct 22
2017	Apr 4	Nov 9	Mar 27	Nov 9
2016	Apr 15	Oct 27	Apr 10	Nov 5
2015	Apr 16	Oct 19	Apr 5	Oct 19
2014	Apr 21	Nov 3	Apr 10	Nov 15
2013	Apr 8	Oct 26	Apr 7	Nov 5
2012	Apr 7	Nov 6	Apr 1	Nov 6
2011	no data	Oct 31	no data	Oct 31
2010	May 13	Nov 1	May 13	Nov 3
2009	Apr 17	Oct 20	Apr 13	Nov 7
2008	May 1	Oct 21	Mar 31	Oct 24
2007	May 7	Oct 30	Apr 13	Nov 8
2006	Apr 27	Oct 14	Apr 11	Nov 5
2005	no data	Oct 30	no data	Nov 24
2004	Apr 17	Oct 29	Mar 23	Nov 9
2003	Apr 25	Oct 20	Apr 18	Oct 25
2001	Apr 20	Oct 9	Apr 19	Oct 31
2000	May 3	Oct 29	Mar 19	Nov 20
1999	Apr 12	Oct 8	Mar 27	Nov 9
1998	Apr 12	no data	Mar 25	no data
1997	Apr 16	Oct 22	Apr 11	Oct 23
1996	Apr 11	Oct 5	Apr 9	Nov 13
1995	Apr 17	Nov 5	Apr 11	Nov 6
1994	Apr 23	Oct 12	Apr 9	Nov 21
1993	Apr 6	Oct 11	Apr 5	Oct 14
1991	Apr 14	Oct 8	Mar 17	Nov 27
1990	Apr 20	Oct 21	Apr 19	Nov 9
1989	Apr 24	Nov 4	Apr 23	Nov 5
1988	May 9	Oct 14	Mar 24	Oct 21
1987	Apr 15	Oct 15	Mar 18	Nov 7
1986	Apr 12	Oct 11	Mar 25	Nov 1
1985	May 9	Oct 22	Apr 11	Nov 16
1984	Apr 22	Oct 6	Apr 1	Oct 7
1983	Apr 23	Oct 23	Mar 31	Nov 14
1982	Apr 30	Oct 23	Apr 15	Oct 24
1981	Apr 23	Oct 12	Apr 22	Oct 13
1980	Apr 18	Oct 10	Apr 18	Oct 30
1979	Apr 22	Oct 11	Mar 28	Oct 28
1978	Apr 22	Sep 27	Apr 10	Oct 18
1977	Apr 11	Oct 24	Apr 11	Oct 24
1976	Apr 13	Oct 12	Apr 13	Oct 19
1975	Apr 30	Oct 8	Apr 15	Oct 31
1974	May 8	Sep 25	Apr 27	Oct 19
1973	Apr 21	Oct 12	Apr 15	Nov 8
1972	May 27	Oct 2	Apr 27	Oct 11
1971	Apr 28	Nov 5	Apr 28	Nov 8
1970	Apr 20	Oct 18	Apr 20	Oct 20
1969	May 7	Oct 23	Apr 21	Oct 24
1968	May 8	Oct 31	May 8	Nov 1
1967	May 17	Oct 8	May 1	Oct 24
1966	May 14	Sep 27	May 3	Oct 27
1965	May 7	Sep 28	Apr 25	Oct 6
1964	May 4	Oct 12	May 3	Oct 12
1963	May 24	Sep 25	Apr 27	Nov 4
1962	May 29	Sep 22	Apr 25	Oct 25
1961	May 31	Oct 16	May 6	Oct 16
1960	May 3	Oct 13	Apr 20	Oct 22
1959	Apr 24	Oct 16	Apr 23	Oct 20
1958	May 4	Oct 7	May 3	Nov 2
1957	May 17	Sep 29	Apr 16	Sep 29
1956	May 26	Sep 19	May 25	Oct 11
1955	May 18	Oct 18	Apr 17	Oct 23
1954	Apr 29	Oct 8	Apr 13	Oct 8
1953	May 4	Oct 9	Apr 16	Oct 9
1952	May 3	Oct 9	May 3	Oct 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.