Barkhamsted, CT: frost dates by year

Last spring and first fall frost at NOAA station USC00060299, 2011 to 2025, measured from daily minimum temperatures.

Elevation 710 ft, 41.921, -72.964. Download the data (JSON), NOAA daily records

Summary at 32°F

	Last spring frost	First fall frost
Median	Apr 28	Oct 17
Earliest	Apr 16 (2017)	Sep 21 (2020)
Latest	May 15 (2013)	Nov 2 (2023)
Trend	2.0 days earlier per decade	3.6 days earlier per decade
Years with data	13	15

At 28°F (hard freeze) the median last spring date is Apr 21 and the median first fall date is Oct 30.

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 19	Oct 10	Apr 19	Nov 7
2024	Apr 28	Oct 17	Apr 23	Oct 17
2023	no data	Nov 2	no data	Nov 3
2022	May 2	Oct 9	Apr 21	Oct 30
2021	no data	Oct 29	no data	Nov 5
2020	May 14	Sep 21	Apr 23	Oct 31
2019	Apr 29	Oct 5	Apr 29	Nov 2
2018	Apr 24	Oct 17	Apr 23	Oct 19
2017	Apr 16	Oct 17	Apr 9	Nov 9
2016	Apr 28	Oct 15	Apr 16	Oct 15
2015	Apr 26	Oct 11	Apr 7	Oct 18
2014	Apr 25	Oct 20	Apr 21	Nov 10
2013	May 15	Oct 23	Apr 15	Oct 26
2012	May 1	Oct 13	Apr 30	Oct 13
2011	Apr 23	Oct 28	Apr 16	Oct 28

"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.