Frost history / S Boardman 2W, MI
S Boardman 2W, MI: frost dates by year
Last spring and first fall frost at NOAA station USC00207684, 2003 to 2016, measured from daily minimum temperatures.
Elevation 1,046 ft, 44.639, -85.325. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | May 29 | Oct 1 |
| Earliest | May 16 (2010) | Sep 6 (2011) |
| Latest | Jun 11 (2006) | Oct 25 (2016) |
| Trend | 1.2 days earlier per decade | 9.1 days later per decade |
| Years with data | 11 | 14 |
At 28°F (hard freeze) the median last spring date is May 24 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 |
|---|---|---|---|---|
| 2016 | May 19 | Oct 25 | May 18 | Oct 26 |
| 2015 | Jun 2 | Sep 30 | May 22 | Oct 2 |
| 2014 | no data | Oct 10 | no data | Oct 19 |
| 2013 | Jun 4 | Oct 14 | May 25 | Oct 24 |
| 2012 | no data | Sep 26 | no data | Oct 12 |
| 2011 | May 27 | Sep 6 | May 27 | Oct 2 |
| 2010 | May 16 | Sep 26 | May 10 | Oct 3 |
| 2009 | Jun 4 | Oct 1 | Jun 4 | Oct 1 |
| 2008 | May 29 | Oct 3 | May 29 | Oct 5 |
| 2007 | May 18 | Oct 14 | May 13 | Oct 14 |
| 2006 | Jun 11 | Sep 10 | May 24 | Oct 6 |
| 2005 | May 17 | Oct 8 | May 17 | Oct 8 |
| 2004 | no data | Sep 29 | no data | Oct 4 |
| 2003 | Jun 1 | Sep 30 | Jun 1 | Oct 4 |
"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.