Ava 12SW, MO: frost dates by year

Last spring and first fall frost at NOAA station USC00230368, 2002 to 2020, measured from daily minimum temperatures.

Elevation 1,197 ft, 36.875, -92.852. Download the data (JSON), NOAA daily records

Summary at 32°F

	Last spring frost	First fall frost
Median	Apr 10	Oct 22
Earliest	Mar 11 (2012)	Oct 7 (2012)
Latest	May 4 (2013)	Nov 10 (2016)
Trend	7.5 days earlier per decade	1.8 days later per decade
Years with data	15	17

At 28°F (hard freeze) the median last spring date is Apr 6 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
2020	no data	Oct 16	no data	Oct 17
2019	no data	Oct 12	no data	Oct 13
2018	Apr 21	Oct 22	Apr 11	Nov 10
2017	Mar 16	Oct 28	Mar 16	Oct 28
2016	Apr 3	Nov 10	Mar 29	Nov 13
2015	Apr 5	Oct 30	Mar 7	Nov 9
2014	Apr 16	Nov 1	Apr 16	Nov 1
2013	May 4	Oct 22	Apr 25	Oct 25
2012	Mar 11	Oct 7	Mar 5	Oct 28
2011	Apr 6	no data	Apr 6	no data
2010	Mar 27	Oct 29	Mar 24	Oct 29
2009	Apr 15	Oct 18	Apr 8	Oct 18
2008	Apr 30	Oct 25	Apr 14	Oct 28
2007	Apr 10	no data	Apr 9	no data
2006	no data	Oct 13	no data	Oct 13
2005	May 3	Oct 8	Mar 20	Oct 26
2004	Apr 2	Nov 5	Mar 22	Nov 28
2003	Apr 11	Oct 27	Apr 11	Oct 27
2002	no data	Oct 14	no data	Oct 14

"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.