Montpelier 2, VT: frost dates by year

Last spring and first fall frost at NOAA station USC00435273, 2002 to 2019, measured from daily minimum temperatures.

Elevation 530 ft, 44.255, -72.601. Download the data (JSON) · NOAA daily records

Summary at 32°F

	Last spring frost	First fall frost
Median	May 11	Oct 8
Earliest	Apr 23 (2011)	Sep 21 (2009)
Latest	May 26 (2009)	Oct 23 (2013)
Trend	10.2 days earlier per decade	4.9 days later per decade
Years with data	14	15

At 28°F (hard freeze) the median last spring date is Apr 24 and the median first fall date is Oct 19.

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
2019	May 9	Oct 5	Apr 12	Nov 8
2018	Apr 24	Oct 15	Apr 23	Oct 27
2017	May 4	Oct 17	Apr 14	Nov 8
2016	May 10	no data	Apr 29	no data
2015	Apr 24	Oct 5	Apr 24	Oct 18
2014	May 19	Oct 13	Apr 21	Nov 14
2013	May 15	Oct 23	Apr 23	Oct 29
2012	May 12	Oct 13	May 1	Oct 13
2011	Apr 23	Oct 6	Apr 23	Oct 28
2010	May 14	Oct 10	May 13	Oct 19
2009	May 26	Sep 21	Apr 21	Oct 16
2008	May 3	Oct 7	May 2	Oct 8
2007	May 22	Oct 17	May 3	Oct 29
2004	no data	Oct 4	no data	Oct 5
2003	May 16	Oct 2	May 3	Oct 19
2002	no data	Oct 8	no data	Oct 13

"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 1991–2020 frost probabilities.