Silverton (Briscoe County) 1961-2004

October 23  - Average first freeze date, based on 42 years of data.

September 21, 1983 - The earliest first freeze recorded.

Data below are the dates of first freeze for each year.
Year  mm/day     Temp           Julian Date

1961   11/19    Temp was 21      323 *missing too much data
1962   11/03    Temp was 32      307
1963   11/17    Temp was 30      321
1964   10/19    Temp was 32      293
 * missing both September and November 1965

1966   10/18    Temp was 32      291
1967   10/27    Temp was 30      300
1968   10/18    Temp was 29      292
1969   10/13    Temp was 28      286

1970   10/08    Temp was 31      281
1971   11/03    Temp was 29      307
1972   10/20    Temp was 30      294
1973   10/30    Temp was 32      303
1974   11/04    Temp was 32      308
1975   10/18    Temp was 32      291
1976   10/08    Temp was 28      282
1977   11/02    Temp was 30      306
1978   11/07    Temp was 29      311
1979   10/23    Temp was 31      296

1980   10/24    Temp was 26      298
1981   10/23    Temp was 30      296
1982   10/20    Temp was 28      293
1983   09/21    Temp was 31      264 *** earliest freeze
1984   10/19    Temp was 29      293
1985   10/01    Temp was 32      274
1986   10/12    Temp was 32      285
1987   11/10    Temp was 22      314
1988   11/06    Temp was 31      311
1989   10/19    Temp was 29      292

1990   10/19    Temp was 31      292
1991   10/29    Temp was 26      302
1992   10/08    Temp was 30      282
1993   10/21    Temp was 32      294
1994   10/26    Temp was 32      299
1995   10/20    Temp was 30      293
1996   10/18    Temp was 30      292
1997   10/26    Temp was 28      299
1998   11/05    Temp was 31      309
1999   10/19    Temp was 32      292

2000   10/08    Temp was 32      282
2001   10/13    Temp was 32      286

2002   10/31    Temp was 30      304

2003   10/26    Temp was 30      299

2004   11/02    Temp was 32      306

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                    Sum =      12420  / 42  = 295.71

Average Julian Date =           295.71 or Oct 23 based on 42 years of data.