Kingston 1 W, RI: frost dates by year

Last spring and first fall frost at NOAA station USW00054797, 2002 to 2024, measured from daily minimum temperatures.

Elevation 106 ft, 41.478, -71.542. Download the data (JSON), NOAA daily records

Summary at 32°F

	Last spring frost	First fall frost
Median	May 1	Oct 13
Earliest	Apr 11 (2019)	Sep 21 (2020)
Latest	May 21 (2020)	Nov 2 (2021)
Trend	6.3 days earlier per decade	3.1 days later per decade
Years with data	22	22

At 28°F (hard freeze) the median last spring date is Apr 19 and the median first fall date is Oct 28.

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
2024	Apr 27	Oct 11	Apr 26	Nov 3
2023	no data	Nov 1	no data	Nov 2
2022	May 1	no data	Apr 30	no data
2021	Apr 24	Nov 2	Apr 4	Nov 4
2020	May 21	Sep 21	Apr 23	Oct 30
2019	Apr 11	Oct 5	Apr 11	Nov 2
2018	Apr 24	Oct 18	Apr 24	Oct 19
2017	May 9	Nov 1	Mar 30	Nov 9
2016	May 10	Oct 11	Apr 17	Oct 26
2015	Apr 26	Oct 17	Apr 25	Oct 18
2014	Apr 21	Oct 6	Apr 21	Oct 20
2013	May 15	Oct 21	Apr 7	Oct 25
2012	Apr 30	Oct 13	Apr 30	Oct 13
2011	Apr 22	Oct 28	Apr 22	Oct 30
2010	May 13	Oct 10	Mar 28	Nov 1
2009	Apr 17	Oct 12	Apr 17	Oct 20
2008	May 1	Oct 8	May 1	Oct 21
2007	May 7	Oct 15	Apr 11	Oct 29
2006	Apr 30	Oct 14	Apr 10	Oct 27
2005	May 13	Oct 24	Apr 17	Nov 11
2004	May 5	Oct 6	Apr 10	Nov 4
2003	May 18	Oct 3	Apr 25	Oct 20
2002	May 21	Oct 14	May 21	Oct 22

"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.