Frost history / Madras 2 N, OR
Madras 2 N, OR: frost dates by year
Last spring and first fall frost at NOAA station USC00355142, 1952 to 2010, measured from daily minimum temperatures.
Elevation 2,443 ft, 44.663, -121.146. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | May 27 | Oct 4 |
| Earliest | Apr 20 (2005) | Sep 3 (1956) |
| Latest | Jun 17 (1954) | Oct 27 (2005) |
| Trend | 5.1 days earlier per decade | 4.3 days later per decade |
| Years with data | 25 | 24 |
At 28°F (hard freeze) the median last spring date is May 7 and the median first fall date is Oct 19.
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 |
|---|---|---|---|---|
| 2010 | May 24 | Oct 6 | May 7 | Nov 13 |
| 2008 | May 12 | no data | May 9 | no data |
| 2007 | May 28 | Oct 5 | Apr 20 | Oct 26 |
| 2006 | May 9 | Oct 10 | May 2 | Oct 26 |
| 2005 | Apr 20 | Oct 27 | Apr 18 | Oct 27 |
| 2004 | Apr 24 | Oct 24 | Apr 2 | Oct 25 |
| 2003 | no data | Oct 25 | no data | Oct 30 |
| 1997 | May 7 | no data | Apr 12 | no data |
| 1996 | May 10 | Oct 16 | May 8 | Oct 16 |
| 1986 | May 22 | Oct 11 | May 22 | Oct 11 |
| 1985 | May 15 | Sep 18 | May 12 | Sep 29 |
| 1984 | Jun 8 | Sep 24 | May 31 | Sep 24 |
| 1983 | May 16 | no data | May 10 | no data |
| 1982 | May 27 | no data | May 5 | no data |
| 1981 | May 16 | Oct 4 | Apr 14 | Oct 13 |
| 1980 | Jun 4 | Oct 9 | Apr 11 | Oct 22 |
| 1979 | Jun 7 | Oct 21 | Apr 20 | Oct 29 |
| 1978 | May 30 | Sep 16 | May 22 | Oct 22 |
| 1977 | May 31 | Oct 3 | May 6 | Nov 3 |
| 1976 | Jun 14 | Oct 4 | Apr 26 | Oct 16 |
| 1975 | Jun 8 | Sep 18 | May 25 | Oct 25 |
| 1974 | no data | Oct 3 | no data | Oct 4 |
| 1957 | May 3 | Sep 17 | Apr 26 | Oct 15 |
| 1956 | May 27 | Sep 3 | May 13 | Oct 14 |
| 1955 | Jun 16 | Sep 21 | Jun 1 | Oct 6 |
| 1954 | Jun 17 | Sep 28 | May 27 | Sep 29 |
| 1953 | Jun 5 | Sep 24 | May 11 | Oct 21 |
| 1952 | no data | Oct 14 | no data | Oct 14 |
"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.