Frost history / Allagash, ME
Allagash, ME: frost dates by year
Last spring and first fall frost at NOAA station USC00170200, 1986 to 2011, measured from daily minimum temperatures.
Elevation 596 ft, 47.089, -69.025. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | Jun 9 | Sep 8 |
| Earliest | May 10 (2006) | Aug 4 (1997) |
| Latest | Jul 31 (1994) | Sep 22 (1996) |
| Trend | 7.1 days earlier per decade | 4.0 days later per decade |
| Years with data | 25 | 24 |
At 28°F (hard freeze) the median last spring date is May 23 and the median first fall date is Sep 25.
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 13 | Sep 11 | May 12 | Oct 6 |
| 2010 | Jun 15 | Sep 18 | May 21 | Sep 21 |
| 2009 | Jun 9 | Sep 6 | May 26 | Sep 26 |
| 2008 | Jun 5 | Sep 11 | May 30 | Sep 19 |
| 2007 | Jun 7 | Aug 20 | May 23 | Sep 30 |
| 2006 | May 10 | Sep 11 | May 9 | Oct 6 |
| 2005 | May 25 | Sep 11 | May 14 | Oct 22 |
| 2004 | Jun 20 | Sep 14 | Jun 11 | Oct 6 |
| 2003 | Jun 5 | Sep 8 | Jun 4 | Oct 4 |
| 2002 | Jun 15 | Aug 31 | Jun 4 | Sep 29 |
| 2001 | Jun 1 | Aug 26 | May 14 | Sep 30 |
| 2000 | Jun 12 | no data | May 20 | no data |
| 1999 | May 16 | Sep 19 | May 15 | Oct 5 |
| 1998 | Jun 3 | Sep 17 | Jun 2 | Sep 18 |
| 1997 | Jun 15 | Aug 4 | Jun 2 | Sep 6 |
| 1996 | Jun 9 | Sep 22 | Jun 9 | Sep 22 |
| 1995 | Jul 5 | Aug 28 | May 11 | Sep 11 |
| 1994 | Jul 31 | Aug 6 | Jul 30 | Sep 20 |
| 1993 | Jun 24 | Aug 14 | May 19 | Aug 23 |
| 1992 | Jun 16 | Sep 20 | May 27 | Sep 24 |
| 1991 | Jun 9 | Sep 2 | May 23 | Sep 21 |
| 1990 | Jun 12 | Sep 8 | May 26 | Oct 4 |
| 1989 | Jun 13 | Aug 27 | May 9 | Sep 25 |
| 1988 | Jun 11 | Sep 15 | Jun 3 | Sep 16 |
| 1987 | May 20 | no data | May 20 | no data |
| 1986 | no data | Aug 29 | no data | Sep 20 |
"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.