Morton (Cochran County) 1962-2004

October 27 - Average first freeze date, based on 43 years of data.

September 21, 1983 - The earliest freeze recorded.

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

Year  mm/day     Temp           Julian Date

1962   11/08    Temp was 31      312

1963   11/18    Temp was 27      322

1964   11/20    Temp was 29      325

1965   11/29    Temp was 27      333

1966   10/15    Temp was 26      288

1967   10/27    Temp was 31      300

1968   10/18    Temp was 32      292

1969   10/13    Temp was 26      286

1970   10/09    Temp was 29      282

1971   11/09    Temp was 31      313

1972   10/20    Temp was 32      294

1973   11/03    Temp was 29      307

1974   11/05    Temp was 31      309

1975   10/30    Temp was 32      303

1976   10/08    Temp was 27      282

1977   11/02    Temp was 27      306

1978   11/08    Temp was 32      312

1979   10/28    Temp was 32      301

1980   10/24    Temp was 27      298

1981   10/24    Temp was 32      297

1982   10/14    Temp was 32      287

1983   09/21    Temp was 32      264  ***earliest freeze

1984   10/19    Temp was 31      293

1985   10/02    Temp was 31      275

1986   10/13    Temp was 29      286

1987   11/10    Temp was 23      314

1988   11/06    Temp was 31      311

1989   10/19    Temp was 25      292

1990   10/22    Temp was 31      295

1991   10/29    Temp was 27      302

1992   10/08    Temp was 30      282

1993   10/21    Temp was 32      294

1994   11/10    Temp was 31      314

1995   11/03    Temp was 31      307

1996   10/22    Temp was 29      296

1997   10/26    Temp was 31      299

1998   11/11    Temp was 31      315

1999   10/18    Temp was 32      291

2000   10/10    Temp was 31      284

2001   11/09    Temp was 32      313

2002   11/04    Temp was 32      308

2003   11/23    Temp was 23      327

2004   11/02    Temp was 30      306

                 Sum =         12917 / 43 = 300.40

Average Julian Date =           300.40 or Oct 27 based on 43 years of data.