Frost history / Rogers City, MI
Rogers City, MI: frost dates by year
Last spring and first fall frost at NOAA station USC00207094, 1979 to 2008, measured from daily minimum temperatures.
Elevation 615 ft, 45.417, -83.816. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | May 13 | Oct 5 |
| Earliest | Apr 24 (1995) | Sep 22 (1979) |
| Latest | Jun 9 (1983) | Oct 29 (2007) |
| Trend | 2.3 days earlier per decade | 4.5 days later per decade |
| Years with data | 29 | 28 |
At 28°F (hard freeze) the median last spring date is Apr 28 and the median first fall date is Oct 22.
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 |
|---|---|---|---|---|
| 2008 | May 28 | Oct 18 | Apr 15 | Oct 23 |
| 2007 | May 21 | Oct 29 | Apr 17 | Nov 2 |
| 2006 | May 22 | Oct 12 | Apr 29 | Oct 26 |
| 2005 | May 12 | Oct 10 | May 4 | Oct 28 |
| 2004 | May 4 | Oct 5 | Apr 28 | Nov 8 |
| 2003 | May 4 | Oct 1 | May 4 | Oct 24 |
| 2002 | May 25 | Oct 8 | Apr 28 | Oct 14 |
| 2001 | Apr 29 | Oct 7 | Apr 29 | Oct 8 |
| 2000 | May 21 | Sep 28 | May 20 | Oct 7 |
| 1999 | May 13 | Oct 3 | Apr 24 | Oct 7 |
| 1998 | Apr 29 | Oct 4 | Apr 18 | Nov 13 |
| 1997 | May 18 | Oct 22 | Apr 20 | Oct 28 |
| 1996 | May 13 | Oct 4 | Apr 29 | Oct 11 |
| 1995 | Apr 24 | Oct 17 | Apr 20 | Nov 4 |
| 1994 | May 13 | Oct 11 | Apr 23 | Nov 11 |
| 1993 | May 1 | Sep 30 | Apr 28 | Oct 13 |
| 1992 | May 26 | Sep 30 | Apr 28 | Oct 20 |
| 1991 | May 19 | Sep 28 | Apr 18 | Oct 20 |
| 1990 | May 30 | Oct 20 | May 2 | Oct 26 |
| 1989 | May 10 | Sep 27 | Apr 24 | Oct 8 |
| 1988 | May 18 | Oct 6 | Apr 22 | Oct 31 |
| 1986 | May 4 | Oct 10 | May 4 | Oct 10 |
| 1985 | May 8 | no data | Apr 12 | no data |
| 1984 | May 13 | Sep 30 | May 3 | Nov 2 |
| 1983 | Jun 9 | Oct 7 | May 17 | Oct 10 |
| 1982 | Jun 4 | Oct 21 | Apr 29 | Nov 5 |
| 1981 | May 18 | Sep 22 | Apr 21 | Oct 21 |
| 1980 | May 12 | Sep 24 | Apr 24 | Oct 9 |
| 1979 | May 22 | Sep 22 | May 5 | Oct 10 |
"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.