Vienna, VA: frost dates by year

Last spring and first fall frost at NOAA station USC00448737, 1996 to 2025, measured from daily minimum temperatures.

Elevation 418 ft, 38.892, -77.289. Download the data (JSON), NOAA daily records

Summary at 32°F

	Last spring frost	First fall frost
Median	Apr 10	Nov 2
Earliest	Mar 27 (1999)	Oct 9 (2001)
Latest	Apr 29 (2004)	Nov 19 (2020)
Trend	little change (less than half a day per decade)	3.2 days later per decade
Years with data	28	30

At 28°F (hard freeze) the median last spring date is Mar 28 and the median first fall date is Nov 12.

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 10	Nov 11	Apr 10	Nov 11
2024	Mar 31	Nov 13	Mar 25	Nov 13
2023	Apr 10	Nov 2	Mar 22	Nov 3
2022	Apr 12	Oct 31	Mar 30	Nov 15
2021	Apr 22	Nov 4	Apr 4	Nov 6
2020	Apr 20	Nov 19	Mar 9	Nov 19
2019	Apr 4	Nov 2	Mar 28	Nov 9
2018	Apr 19	Oct 22	Mar 27	Nov 11
2017	Apr 8	Nov 11	Mar 24	Nov 11
2016	Apr 15	Nov 8	Apr 11	Nov 13
2015	Apr 2	Oct 19	Mar 30	Dec 19
2014	Apr 18	Nov 18	Mar 28	Nov 19
2013	Apr 23	Oct 25	Apr 5	Nov 4
2012	Apr 8	Oct 13	Mar 7	Nov 6
2011	Apr 6	Oct 31	Mar 30	Dec 2
2010	Mar 28	Nov 2	Mar 28	Nov 27
2009	Apr 14	Nov 7	Mar 25	Dec 6
2008	Apr 3	Oct 23	Mar 26	Nov 19
2007	no data	Nov 8	no data	Nov 8
2006	no data	Oct 13	no data	Nov 4
2005	Apr 17	Nov 12	Mar 22	Nov 18
2004	Apr 29	Nov 8	Apr 29	Nov 10
2003	Apr 1	Oct 24	Mar 31	Nov 9
2002	Apr 7	Nov 1	Apr 7	Nov 28
2001	Apr 20	Oct 9	Mar 28	Nov 12
2000	Apr 10	Nov 6	Mar 19	Nov 16
1999	Mar 27	Nov 4	Mar 23	Nov 18
1998	Apr 13	Nov 4	Mar 25	Nov 5
1997	Apr 16	Oct 23	Apr 13	Nov 17
1996	Apr 11	Nov 3	Apr 9	Nov 4

"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.