Guthrie (King County)  1964-2004

November 4  - Average first freeze date, based on 39 years of data.

October 13, 1969  - The earliest first freeze recorded.

Data below are the dates of first freeze for each year.

Year  mm/day     Temp           Julian Date

1964   11/20    Temp was 28      325

1965   11/30    Temp was 30      334

1966   10/16    Temp was 31      289

1967   11/04    Temp was 24      308

1968   11/08    Temp was 32      313

1969   10/13    Temp was 32      286 ***earliest freeze

1970   10/27    Temp was 30      300

1971   11/07    Temp was 32      311

 * Missing October 1972         ****

1973   11/21    Temp was 32      325

1974   11/14    Temp was 28      318

1975   11/12    Temp was 31      316

1976   10/20    Temp was 28      294

1977   11/10    Temp was 19      314

1978   11/07    Temp was 30      311

1979   11/01    Temp was 31      305

 * Missing Feb – Oct 1980 & Dec 1980 – Apr 1981

1981   10/26    Temp was 31      299

1982   11/04    Temp was 24      308

1983   11/11    Temp was 32      315

1984   11/11    Temp was 29      316

1985   11/07    Temp was 32      311

1986   11/11    Temp was 23      315

1987   11/10    Temp was 29      314

1988   11/16    Temp was 31      321

1989   10/19    Temp was 28      292

1990   10/22    Temp was 29      295

1991   10/30    Temp was 32      303

1992   11/04    Temp was 32      309

1993   10/30    Temp was 24      303

1994   11/10    Temp was 32      314

1995   10/24    Temp was 28      297

1996   11/02    Temp was 32      307

1997   10/27    Temp was 23      300

1998   11/11    Temp was 28      315

1999   10/18    Temp was 32      291

2000   11/07    Temp was 32      312

2001   10/16    Temp was 32      289

2002   11/06    Temp was 32      310

2003   11/19    Temp was 30      323

2003   11/04    Temp was 29      308

                 Sum =         12016 / 39 = 308.10

Average Julian Date =           308.10 or November 4 based on 39 years of data.

Earliest Freeze occurred: 10/13/1969