Dimmitt (Castro County)    1962-2004

October 18  - Average first freeze date, based on 43 years of data.

September 21, 1983  - The earliest first freeze recorded.

Year  mm/day     Temp           Julian Date

1962   11/07    Temp was 31      311

1963   11/01    Temp was 32      305

1964   10/20    Temp was 32      294

1965   11/01    Temp was 32      305

1966   10/15    Temp was 24      288

1967   10/16    Temp was 32      289

1968   10/18    Temp was 29      292

1969   10/12    Temp was 32      285

1970   10/08    Temp was 27      281

1971   11/02    Temp was 31      306

1972   10/19    Temp was 31      293

1973   10/31    Temp was 32      304

1974   10/15    Temp was 31      288

1975   10/18    Temp was 30      291

1976   10/08    Temp was 26      282

1977   10/11    Temp was 30      284

1978   10/26    Temp was 31      299

1979   10/22    Temp was 30      295

1980   10/19    Temp was 31      293

1981   10/23    Temp was 27      296

1982   10/10    Temp was 32      283

1983   09/21    Temp was 29      264 *** earliest freeze

1984   09/30    Temp was 31      274

1985   09/30    Temp was 31      273

1986   10/12    Temp was 31      285

1987   10/20    Temp was 31      293

1988   11/05    Temp was 31      310

1989   10/18    Temp was 32      291

1990   10/09    Temp was 32      282

1991   10/19    Temp was 30      292

1992   10/08    Temp was 29      282

1993   10/21    Temp was 30      294

1994   10/09    Temp was 31      282

1995   10/14    Temp was 32      287

1996   10/18    Temp was 27      292

1997   10/25    Temp was 31      298

1998   10/19    Temp was 32      292

1999   10/17    Temp was 32      290

2000   09/25    Temp was 30      269

2001   10/06    Temp was 29      279

2002   10/24    Temp was 32      297

2003   10/26    Temp was 25      299

2004   10/31    Temp was 32      304

                   Sum =       12493 / 43 = 290.53

Average Julian Date =           290.53 or October 18 based on 43 years of data.