Frost history / Patten 2, ME
Patten 2, ME: frost dates by year
Last spring and first fall frost at NOAA station USC00176594, 1993 to 2011, measured from daily minimum temperatures.
Elevation 820 ft, 46.026, -68.498. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | May 14 | Sep 30 |
| Earliest | May 2 (2011) | Sep 16 (1995) |
| Latest | Jun 12 (2000) | Oct 26 (2007) |
| Trend | 7.2 days earlier per decade | 9.4 days later per decade |
| Years with data | 15 | 16 |
At 28°F (hard freeze) the median last spring date is May 7 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 |
|---|---|---|---|---|
| 2011 | May 2 | Oct 6 | Apr 24 | Oct 6 |
| 2010 | May 16 | Oct 12 | May 13 | Oct 14 |
| 2009 | May 19 | no data | May 19 | no data |
| 2008 | May 12 | Sep 19 | May 3 | Sep 19 |
| 2007 | no data | Oct 26 | no data | Oct 26 |
| 2006 | May 8 | Sep 27 | May 8 | Oct 7 |
| 2005 | May 14 | no data | May 14 | no data |
| 2004 | May 10 | Oct 4 | May 10 | Oct 6 |
| 2003 | May 17 | Oct 4 | May 1 | Oct 19 |
| 2002 | no data | Sep 30 | no data | Oct 4 |
| 2001 | May 7 | Sep 30 | May 7 | Sep 30 |
| 2000 | Jun 12 | Sep 26 | May 3 | Sep 29 |
| 1999 | May 15 | Oct 5 | May 12 | Oct 5 |
| 1998 | Jun 2 | Sep 25 | Apr 28 | Oct 7 |
| 1997 | May 9 | Sep 22 | Apr 30 | Oct 3 |
| 1996 | May 27 | Oct 4 | May 14 | Oct 7 |
| 1995 | no data | Sep 16 | no data | Sep 24 |
| 1993 | May 14 | Sep 21 | Apr 25 | Oct 1 |
"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.