Frost history / Woodside Fire Stn 1, CA
Woodside Fire Stn 1, CA: frost dates by year
Last spring and first fall frost at NOAA station USC00049792, 1973 to 2013, measured from daily minimum temperatures.
Elevation 380 ft, 37.429, -122.256. Download the data (JSON) · NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | Mar 15 | Nov 18 |
| Earliest | Jan 24 (1978) | Oct 25 (1997) |
| Latest | Apr 30 (1986) | Dec 22 (1981) |
| Trend | 11.6 days earlier per decade | 1.0 days later per decade |
| Years with data | 24 | 24 |
At 28°F (hard freeze) the median last spring date is Jan 31 and the median first fall date is Dec 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 |
|---|---|---|---|---|
| 2013 | no data | Dec 4 | no data | Dec 5 |
| 2012 | Apr 9 | no data | Jan 21 | no data |
| 2006 | Mar 12 | no data | Feb 16 | no data |
| 2005 | Jan 30 | no data | none | no data |
| 2004 | Feb 11 | no data | none | no data |
| 2003 | Feb 10 | Nov 22 | Feb 9 | Nov 23 |
| 2002 | Mar 19 | no data | Jan 31 | no data |
| 2001 | Feb 15 | Nov 27 | Feb 9 | none |
| 2000 | no data | Nov 11 | no data | none |
| 1997 | Mar 12 | Oct 25 | Jan 14 | Dec 22 |
| 1996 | Feb 26 | Oct 30 | none | none |
| 1995 | Feb 16 | Dec 17 | none | none |
| 1994 | Mar 23 | Nov 3 | Feb 12 | Dec 8 |
| 1993 | Mar 4 | Nov 16 | Jan 5 | Nov 23 |
| 1992 | Feb 15 | Nov 10 | Jan 24 | Dec 19 |
| 1989 | Mar 3 | Nov 28 | Feb 15 | Dec 11 |
| 1987 | Mar 24 | Nov 15 | Feb 26 | Nov 15 |
| 1986 | Apr 30 | Nov 26 | Feb 9 | Nov 27 |
| 1985 | no data | Nov 12 | no data | Nov 13 |
| 1984 | Apr 8 | Nov 26 | Jan 14 | Dec 17 |
| 1983 | Apr 14 | Nov 22 | Jan 1 | Dec 23 |
| 1982 | Apr 1 | Oct 26 | Feb 8 | Dec 30 |
| 1981 | no data | Dec 22 | no data | none |
| 1978 | Jan 24 | Nov 10 | none | Nov 15 |
| 1977 | Mar 31 | Nov 19 | Jan 19 | none |
| 1976 | Apr 2 | Nov 28 | Mar 5 | Nov 28 |
| 1975 | Apr 17 | Nov 9 | Jan 31 | Nov 19 |
| 1974 | Apr 27 | Nov 24 | Jan 9 | Dec 24 |
| 1973 | no data | Nov 4 | no data | none |
"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 1991–2020 frost probabilities.