Frost history / Cornell 5SE, MI
Cornell 5SE, MI: frost dates by year
Last spring and first fall frost at NOAA station USC00201802, 1992 to 2012, measured from daily minimum temperatures.
Elevation 794 ft, 45.827, -87.159. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | May 22 | Sep 29 |
| Earliest | May 1 (1995) | Sep 10 (1995) |
| Latest | Jun 22 (1992) | Oct 10 (2006) |
| Trend | 2.4 days earlier per decade | 5.8 days later per decade |
| Years with data | 18 | 15 |
At 28°F (hard freeze) the median last spring date is May 10 and the median first fall date is Oct 5.
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 |
|---|---|---|---|---|
| 2012 | Jun 1 | no data | Apr 29 | no data |
| 2010 | May 10 | Oct 4 | May 10 | Oct 30 |
| 2009 | May 31 | Oct 1 | May 11 | Oct 1 |
| 2008 | May 28 | Oct 3 | Apr 30 | Oct 4 |
| 2007 | May 21 | Sep 15 | May 13 | Oct 25 |
| 2006 | no data | Oct 10 | no data | Oct 12 |
| 2005 | May 16 | no data | May 12 | no data |
| 2004 | May 7 | Sep 29 | May 3 | Oct 5 |
| 2003 | no data | Sep 29 | no data | Oct 5 |
| 2002 | May 25 | Oct 7 | May 20 | Oct 14 |
| 2001 | May 13 | Sep 28 | May 12 | Sep 28 |
| 2000 | May 21 | Sep 24 | Apr 30 | Sep 28 |
| 1999 | May 9 | Sep 21 | Apr 25 | Oct 3 |
| 1998 | Jun 5 | Oct 4 | Apr 28 | Oct 15 |
| 1997 | May 22 | no data | May 16 | no data |
| 1996 | May 30 | Oct 3 | May 12 | Oct 8 |
| 1995 | May 1 | Sep 10 | Apr 24 | Sep 23 |
| 1994 | May 27 | no data | May 27 | no data |
| 1993 | May 17 | no data | Apr 27 | no data |
| 1992 | Jun 22 | Sep 23 | May 14 | Sep 23 |
"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.