Frost history / Washburn 5 W, MO
Washburn 5 W, MO: frost dates by year
Last spring and first fall frost at NOAA station USC00238740, 2009 to 2022, measured from daily minimum temperatures.
Elevation 1,400 ft, 36.575, -94.054. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | Apr 7 | Nov 1 |
| Earliest | Mar 16 (2017) | Oct 7 (2012) |
| Latest | May 5 (2013) | Nov 26 (2009) |
| Trend | 8.2 days later per decade | 4.5 days earlier per decade |
| Years with data | 10 | 13 |
At 28°F (hard freeze) the median last spring date is Mar 23 and the median first fall date is Nov 7.
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 9 | no data | Mar 13 | no data |
| 2021 | Apr 22 | Nov 4 | Apr 21 | Nov 13 |
| 2020 | Apr 18 | Oct 27 | Feb 28 | Nov 30 |
| 2019 | Apr 1 | Oct 12 | Apr 1 | Oct 31 |
| 2018 | Apr 20 | Nov 9 | Apr 17 | Nov 10 |
| 2017 | Mar 16 | Oct 28 | Mar 16 | Oct 28 |
| 2016 | Apr 3 | Nov 19 | Mar 25 | Nov 19 |
| 2015 | Apr 5 | Nov 21 | Mar 7 | Nov 22 |
| 2014 | no data | Nov 1 | no data | Nov 1 |
| 2013 | May 5 | Oct 25 | Mar 28 | Nov 7 |
| 2012 | no data | Oct 7 | no data | Oct 27 |
| 2011 | no data | Oct 19 | no data | Oct 20 |
| 2010 | Mar 23 | Nov 5 | Mar 21 | Nov 6 |
| 2009 | no data | Nov 26 | no data | Nov 30 |
"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.