Frost history / Franklin Wwtp, IN
Franklin Wwtp, IN: frost dates by year
Last spring and first fall frost at NOAA station USC00123091, 2002 to 2025, measured from daily minimum temperatures.
Elevation 720 ft, 39.468, -86.041. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | Apr 18 | Oct 19 |
| Earliest | Apr 3 (2019) | Oct 2 (2003) |
| Latest | May 10 (2020) | Nov 5 (2012) |
| Trend | 1.2 days later per decade | 3.4 days later per decade |
| Years with data | 20 | 17 |
At 28°F (hard freeze) the median last spring date is Apr 2 and the median first fall date is Nov 3.
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 24 | Apr 9 | Nov 10 |
| 2024 | Apr 25 | Oct 17 | Apr 7 | Nov 29 |
| 2023 | Apr 25 | no data | Apr 25 | no data |
| 2022 | Apr 20 | no data | Apr 11 | no data |
| 2021 | Apr 24 | no data | Apr 22 | no data |
| 2020 | May 10 | Oct 6 | May 9 | Oct 31 |
| 2019 | Apr 3 | no data | Apr 2 | no data |
| 2018 | May 1 | Oct 18 | Apr 11 | Oct 21 |
| 2017 | Apr 9 | Oct 26 | Mar 24 | Nov 10 |
| 2015 | Apr 25 | no data | Mar 29 | no data |
| 2014 | Apr 16 | Nov 3 | Mar 27 | Nov 15 |
| 2013 | Apr 4 | Oct 26 | Apr 4 | Nov 3 |
| 2012 | no data | Nov 5 | no data | Nov 5 |
| 2010 | Apr 10 | Oct 22 | Mar 30 | Oct 23 |
| 2009 | Apr 12 | Oct 12 | Mar 30 | Oct 18 |
| 2008 | Apr 16 | Oct 19 | Mar 25 | Oct 30 |
| 2007 | Apr 11 | Oct 29 | Apr 11 | Nov 3 |
| 2006 | Apr 10 | Oct 12 | Mar 28 | Oct 16 |
| 2005 | May 4 | Oct 28 | Mar 25 | Oct 29 |
| 2004 | May 3 | Oct 3 | Mar 23 | Nov 9 |
| 2003 | Apr 23 | Oct 2 | Apr 1 | Nov 8 |
| 2002 | no data | Oct 14 | no data | Nov 2 |
"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.