Boonville, MO: frost dates by year

Last spring and first fall frost at NOAA station USC00230824, 2010 to 2025, measured from daily minimum temperatures.

Elevation 752 ft, 38.962, -92.739. Download the data (JSON), NOAA daily records

Summary at 32°F

	Last spring frost	First fall frost
Median	Apr 8	Oct 29
Earliest	Mar 6 (2012)	Oct 8 (2012)
Latest	Apr 24 (2013)	Nov 23 (2024)
Trend	3.0 days later per decade	11.1 days later per decade
Years with data	14	13

At 28°F (hard freeze) the median last spring date is Mar 25 and the median first fall date is Nov 1.

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 9	Nov 3	Mar 7	Nov 10
2024	Mar 28	Nov 23	Mar 28	Nov 24
2023	Mar 21	Nov 1	Mar 20	Nov 1
2022	Apr 20	Oct 18	Apr 2	Oct 18
2021	Apr 23	Nov 3	Apr 2	Nov 19
2020	Apr 19	Oct 27	Mar 22	Nov 14
2019	Apr 2	Oct 31	Mar 7	Nov 1
2018	no data	Oct 22	no data	Nov 10
2017	Mar 17	no data	Mar 16	no data
2016	Apr 13	no data	Apr 10	no data
2015	Apr 4	no data	Apr 4	no data
2014	Apr 16	Nov 1	Apr 16	Nov 1
2013	Apr 24	Oct 23	Apr 3	Oct 25
2012	Mar 6	Oct 8	Mar 6	Oct 27
2011	Apr 6	Oct 21	Mar 11	Nov 11
2010	no data	Oct 29	no data	Oct 29

"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.