Frost history / Petersburg 61 Brg, IN
Petersburg 61 Brg, IN: frost dates by year
Last spring and first fall frost at NOAA station USC00126872, 1989 to 2008, measured from daily minimum temperatures.
Elevation 472 ft, 38.465, -87.266. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | Apr 9 | Oct 25 |
| Earliest | Mar 31 (1991) | Oct 8 (2000) |
| Latest | Apr 19 (2001) | Nov 9 (2004) |
| Trend | 3.5 days later per decade | 8.2 days later per decade |
| Years with data | 15 | 18 |
At 28°F (hard freeze) the median last spring date is Apr 6 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 |
|---|---|---|---|---|
| 2008 | no data | Oct 28 | no data | Oct 29 |
| 2007 | Apr 14 | Oct 29 | Apr 11 | Nov 2 |
| 2005 | Apr 9 | Oct 29 | Mar 30 | Nov 17 |
| 2004 | Apr 15 | Nov 9 | Apr 6 | Dec 14 |
| 2003 | no data | Nov 8 | no data | Nov 8 |
| 2002 | Apr 6 | Nov 2 | Apr 6 | Nov 2 |
| 2001 | Apr 19 | Oct 28 | Mar 29 | Oct 28 |
| 2000 | Apr 10 | Oct 8 | Mar 13 | Nov 15 |
| 1999 | no data | Oct 24 | no data | Nov 3 |
| 1998 | Apr 6 | no data | Mar 25 | no data |
| 1997 | Apr 18 | Oct 22 | Apr 10 | Oct 23 |
| 1996 | Apr 11 | Oct 19 | Apr 11 | Nov 2 |
| 1995 | Apr 6 | Oct 25 | Apr 6 | Nov 4 |
| 1994 | Apr 8 | Oct 26 | Apr 8 | Nov 23 |
| 1993 | Apr 4 | Oct 23 | Apr 4 | Nov 1 |
| 1992 | Apr 6 | Oct 17 | Apr 4 | Oct 19 |
| 1991 | Mar 31 | Oct 16 | Mar 31 | Oct 16 |
| 1990 | Apr 18 | Oct 19 | Apr 12 | Nov 8 |
| 1989 | no data | Oct 19 | no data | Nov 3 |
"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.