Frost history / Blissfield 1NNE, MI
Blissfield 1NNE, MI: frost dates by year
Last spring and first fall frost at NOAA station USC00200842, 2002 to 2012, measured from daily minimum temperatures.
Elevation 690 ft, 41.840, -83.861. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | Apr 24 | Oct 12 |
| Earliest | Apr 7 (2002) | Oct 1 (2009) |
| Latest | May 5 (2005) | Oct 28 (2007) |
| Trend | 4.0 days later per decade | 5.5 days later per decade |
| Years with data | 11 | 11 |
At 28°F (hard freeze) the median last spring date is Apr 14 and the median first fall date is Oct 28.
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 | Apr 30 | Oct 8 | Apr 28 | Oct 12 |
| 2011 | Apr 21 | Oct 22 | Apr 4 | Oct 28 |
| 2010 | Apr 20 | Oct 20 | Apr 11 | Nov 1 |
| 2009 | Apr 24 | Oct 1 | Apr 13 | Oct 18 |
| 2008 | May 1 | Oct 4 | Apr 30 | Oct 22 |
| 2007 | Apr 16 | Oct 28 | Apr 14 | Nov 2 |
| 2006 | Apr 26 | Oct 12 | Apr 26 | Oct 15 |
| 2005 | May 5 | Oct 17 | May 4 | Oct 29 |
| 2004 | May 4 | Oct 3 | Apr 28 | Nov 8 |
| 2003 | Apr 24 | Oct 2 | Apr 10 | Nov 7 |
| 2002 | Apr 7 | Oct 14 | Apr 4 | Oct 21 |
"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.