Frost history / Corunna 2 Ne, MI
Corunna 2 Ne, MI: frost dates by year
Last spring and first fall frost at NOAA station USC00201818, 2002 to 2018, measured from daily minimum temperatures.
Elevation 762 ft, 42.999, -84.074. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | May 4 | Oct 13 |
| Earliest | Apr 28 (2006) | Sep 29 (2006) |
| Latest | May 28 (2008) | Oct 26 (2017) |
| Trend | 9.7 days earlier per decade | 10.9 days later per decade |
| Years with data | 13 | 12 |
At 28°F (hard freeze) the median last spring date is Apr 27 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 |
|---|---|---|---|---|
| 2018 | May 1 | no data | Apr 30 | no data |
| 2017 | May 10 | Oct 26 | May 10 | Oct 27 |
| 2016 | May 1 | Oct 25 | Apr 15 | Nov 12 |
| 2015 | Apr 29 | Oct 17 | Apr 27 | Oct 18 |
| 2014 | Apr 28 | Oct 11 | Apr 20 | Oct 24 |
| 2013 | May 14 | Oct 24 | Apr 22 | Nov 12 |
| 2012 | Apr 30 | Oct 8 | Apr 30 | Nov 4 |
| 2008 | May 28 | no data | Apr 30 | no data |
| 2007 | May 13 | Oct 13 | Apr 14 | Nov 1 |
| 2006 | Apr 28 | Sep 29 | Apr 9 | Oct 12 |
| 2005 | May 4 | Oct 19 | May 4 | Oct 26 |
| 2004 | no data | Oct 4 | no data | Oct 4 |
| 2003 | May 22 | Oct 1 | Apr 25 | Oct 5 |
| 2002 | May 20 | Oct 13 | May 19 | Oct 14 |
"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.