Frost history / Winona 3 Sw, MO
Winona 3 Sw, MO: frost dates by year
Last spring and first fall frost at NOAA station USC00239056, 2011 to 2025, measured from daily minimum temperatures.
Elevation 961 ft, 36.979, -91.384. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | Apr 29 | Oct 17 |
| Earliest | Apr 13 (2016) | Oct 2 (2020) |
| Latest | May 16 (2014) | Nov 6 (2016) |
| Trend | 5.5 days earlier per decade | 5.8 days earlier per decade |
| Years with data | 15 | 15 |
At 28°F (hard freeze) the median last spring date is Apr 16 and the median first fall date is Oct 25.
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 17 | Oct 22 | Apr 16 | Nov 2 |
| 2024 | Apr 23 | Oct 16 | Apr 23 | Oct 16 |
| 2023 | May 4 | Oct 8 | May 3 | Oct 31 |
| 2022 | Apr 27 | Oct 9 | Apr 20 | Oct 14 |
| 2021 | May 13 | Oct 17 | Apr 23 | Nov 4 |
| 2020 | May 11 | Oct 2 | May 9 | Oct 5 |
| 2019 | Apr 20 | Oct 12 | Apr 16 | Oct 12 |
| 2018 | Apr 29 | Oct 17 | Apr 21 | Oct 21 |
| 2017 | Apr 24 | Oct 17 | Mar 16 | Oct 25 |
| 2016 | Apr 13 | Nov 6 | Mar 28 | Nov 10 |
| 2015 | May 1 | Oct 17 | Apr 5 | Oct 30 |
| 2014 | May 16 | Oct 30 | Apr 16 | Nov 1 |
| 2013 | May 12 | Oct 22 | Apr 25 | Oct 25 |
| 2012 | Apr 24 | Oct 7 | Apr 12 | Oct 28 |
| 2011 | May 4 | Oct 20 | Apr 6 | Oct 21 |
"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.