Frost history / Woodburn 3N, IN
Woodburn 3N, IN: frost dates by year
Last spring and first fall frost at NOAA station USC00129724, 2009 to 2021, measured from daily minimum temperatures.
Elevation 710 ft, 41.164, -84.848. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | Apr 26 | Oct 20 |
| Earliest | Apr 4 (2011) | Sep 25 (2012) |
| Latest | May 12 (2020) | Nov 12 (2016) |
| Trend | 10.6 days later per decade | 14.9 days later per decade |
| Years with data | 13 | 12 |
At 28°F (hard freeze) the median last spring date is Apr 5 and the median first fall date is Nov 2.
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 |
|---|---|---|---|---|
| 2021 | May 1 | no data | Apr 22 | no data |
| 2020 | May 12 | Oct 16 | May 10 | Nov 2 |
| 2019 | Apr 15 | Nov 1 | Apr 2 | Nov 1 |
| 2018 | May 1 | Oct 16 | Apr 19 | Oct 19 |
| 2017 | Apr 9 | Oct 26 | Mar 24 | Oct 27 |
| 2016 | Apr 15 | Nov 12 | Apr 11 | Nov 12 |
| 2015 | Apr 26 | Oct 18 | Apr 26 | Oct 18 |
| 2014 | Apr 23 | Oct 12 | Apr 17 | Nov 2 |
| 2013 | Apr 27 | Oct 22 | Apr 5 | Nov 12 |
| 2012 | Apr 28 | Sep 25 | Mar 11 | Nov 4 |
| 2011 | Apr 4 | Oct 22 | Apr 4 | Oct 30 |
| 2010 | Apr 28 | Oct 22 | Mar 31 | Nov 2 |
| 2009 | Apr 12 | Oct 2 | Mar 21 | Oct 18 |
"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.