Richmond 3S, MO: frost dates by year

Last spring and first fall frost at NOAA station USC00237116, 2007 to 2022, measured from daily minimum temperatures.

Elevation 700 ft, 39.242, -93.970. Download the data (JSON), NOAA daily records

Summary at 32°F

	Last spring frost	First fall frost
Median	Apr 21	Oct 25
Earliest	Apr 5 (2015)	Oct 6 (2012)
Latest	May 16 (2014)	Nov 10 (2016)
Trend	5.8 days later per decade	2.5 days earlier per decade
Years with data	15	16

At 28°F (hard freeze) the median last spring date is Apr 13 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
2022	Apr 27	Oct 8	Apr 20	Oct 18
2021	Apr 23	Nov 2	Apr 23	Nov 3
2020	May 11	Oct 16	Apr 14	Oct 27
2019	Apr 14	Oct 12	Apr 1	Oct 31
2018	Apr 22	Oct 15	Apr 21	Oct 16
2017	Apr 8	Oct 28	Mar 16	Oct 28
2016	Apr 13	Nov 10	Apr 13	Nov 12
2015	Apr 5	Oct 27	Apr 5	Oct 30
2014	May 16	Nov 1	Apr 16	Nov 1
2013	Apr 26	Oct 23	Apr 21	Oct 25
2012	Apr 21	Oct 6	Mar 11	Oct 7
2011	Apr 6	Oct 18	Apr 5	Oct 20
2010	Apr 10	Oct 29	Mar 30	Oct 29
2009	Apr 14	Oct 10	Apr 12	Oct 18
2008	Apr 29	Oct 27	Apr 15	Oct 28
2007	no data	Oct 28	no data	Nov 1

"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.