Frost history / Filion 5NNW, MI
Filion 5NNW, MI: frost dates by year
Last spring and first fall frost at NOAA station USC00202804, 1998 to 2025, measured from daily minimum temperatures.
Elevation 635 ft, 43.916, -83.083. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | May 1 | Oct 23 |
| Earliest | Apr 22 (2011) | Oct 1 (2003) |
| Latest | May 29 (2008) | Nov 14 (2022) |
| Trend | 2.5 days earlier per decade | 8.7 days later per decade |
| Years with data | 19 | 21 |
At 28°F (hard freeze) the median last spring date is Apr 26 and the median first fall date is Nov 4.
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 |
|---|---|---|---|---|
| 2025 | no data | Oct 25 | no data | Oct 27 |
| 2024 | Apr 26 | Oct 27 | Apr 26 | Dec 1 |
| 2023 | Apr 26 | Oct 31 | Apr 3 | Nov 18 |
| 2022 | Apr 30 | Nov 14 | Apr 3 | Nov 14 |
| 2021 | May 1 | Nov 4 | Apr 2 | Nov 16 |
| 2020 | May 14 | Oct 31 | Apr 21 | Nov 19 |
| 2017 | no data | Oct 26 | no data | Nov 8 |
| 2015 | no data | Oct 18 | no data | Nov 8 |
| 2014 | May 6 | no data | Apr 25 | no data |
| 2013 | May 25 | Oct 23 | Apr 22 | Oct 29 |
| 2012 | Apr 30 | Oct 7 | Apr 30 | Nov 6 |
| 2011 | Apr 22 | Oct 28 | Apr 14 | Oct 28 |
| 2010 | Apr 30 | Oct 21 | Apr 29 | Nov 1 |
| 2009 | May 18 | Oct 12 | Apr 18 | Oct 17 |
| 2008 | May 29 | no data | Apr 30 | no data |
| 2007 | no data | Oct 28 | no data | Nov 4 |
| 2006 | Apr 29 | Oct 6 | Apr 26 | Oct 26 |
| 2005 | May 5 | Oct 20 | Apr 29 | Nov 11 |
| 2004 | May 5 | Oct 5 | May 4 | Oct 5 |
| 2003 | May 5 | Oct 1 | Apr 27 | Oct 6 |
| 2002 | May 22 | Oct 14 | Apr 24 | Oct 14 |
| 2000 | May 1 | no data | Apr 28 | no data |
| 1999 | no data | Oct 4 | no data | Oct 7 |
| 1998 | Apr 29 | Oct 30 | Apr 29 | Nov 13 |
"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.