館山の降雪量合計(10月1日〜5月31日)
| 年 | 日数 | 降雪量合計(cm) | 最大最深積雪 | 平均気温 | 最高気温の平均 | 最低気温の平均 |
|---|---|---|---|---|---|---|
| 2005 - 2006 | 243 | 0 | 0 | 11.5 | 16.2 | 6.8 |
| 2004 - 2005 | 243 | 0 | 0 | 12.3 | 17.1 | 7.4 |
| 2003 - 2004 | 244 | 0 | 0 | 12.6 | 17.3 | 7.8 |
| 2002 - 2003 | 243 | 1 | 1 | 11.5 | 16 | 6.9 |
| 2001 - 2002 | 243 | 0 | 0 | 12.3 | 17.3 | 7.4 |
| 2000 - 2001 | 243 | 0 | 0 | 12.1 | 16.7 | 7.4 |
| 1999 - 2000 | 244 | 3 | 2 | 12.4 | 17.4 | 7.2 |
| 1998 - 1999 | 243 | 5 | 3 | 12.6 | 17.4 | 7.6 |
| 1997 - 1998 | 243 | 0 | 0 | 12.7 | 17.4 | 7.9 |
| 1996 - 1997 | 243 | 0 | 0 | 12.1 | 17.2 | 6.9 |
| 1995 - 1996 | 244 | 5 | 5 | 11.1 | 16.1 | 5.8 |
| 1994 - 1995 | 243 | 0 | 0 | 12.2 | 16.8 | 7.5 |
| 1993 - 1994 | 243 | 0 | 0 | 11.9 | 16.6 | 7.1 |
| 1992 - 1993 | 243 | 0 | 0 | 11.7 | 16.4 | 6.7 |
| 1991 - 1992 | 244 | 0 | 1 | 12.1 | 16.5 | 7.4 |
| 1990 - 1991 | 243 | 0 | 0 | 12.3 | 17.1 | 7.6 |
| 1989 - 1990 | 243 | 0 | 0 | 12.2 | 16.7 | 7.4 |
| 1988 - 1989 | 243 | 0 | 0 | 11.7 | 16.5 | 6.8 |
| 1987 - 1988 | 244 | 0 | 0 | 11.8 | 16.3 | 6.9 |
| 1986 - 1987 | 243 | 2 | 2 | 11.6 | 16.3 | 6.6 |
| 1985 - 1986 | 243 | 4 | 4 | 11 | 15.6 | 6 |
| 1984 - 1985 | 243 | 0 | 0 | 11.3 | 15.8 | 6.7 |
| 1983 - 1984 | 244 | 29 | 10 | 9.7 | 14.5 | 4.8 |
| 1982 - 1983 | 243 | 0 | 0 | 12 | 16.7 | 7.1 |
| 1981 - 1982 | 243 | 0 | 0 | 11.3 | 16.2 | 6.3 |
| 1980 - 1981 | 243 | 4 | 3 | 11.4 | 16.3 | 6.2 |
| 1979 - 1980 | 244 | 0 | 0 | 12.3 | 16.8 | 7.5 |
| 1978 - 1979 | 243 | 0 | 0 | 12.2 | 17.1 | 7.1 |
| 1977 - 1978 | 243 | 0 | 0 | 12.1 | 16.8 | 7.2 |
| 1976 - 1977 | 243 | 5 | 5 | 11.1 | 15.7 | 6.1 |
| 1975 - 1976 | 244 | 1 | 1 | 11.5 | 15.8 | 6.7 |
| 1974 - 1975 | 243 | 3 | 3 | 11 | 15.6 | 6 |
| 1973 - 1974 | 243 | 0 | 0 | 11.1 | 15.8 | 5.9 |
| 1972 - 1973 | 243 | 0 | 0 | 11.7 | 16.5 | 6.6 |
| 1971 - 1972 | 244 | 0 | 0 | 11.7 | 16.2 | 6.8 |
| 1970 - 1971 | 243 | 0 | 0 | 11.2 | 15.9 | 6.2 |
| 1969 - 1970 | 243 | 0 | 0 | 10.9 | 15.5 | 5.8 |
| 1968 - 1969 | 243 | 0 | 0 | 11.8 | 16.3 | 7.1 |
| 1967 - 1968 | 244 | 0 | 0 | 17.3 | 21.5 | 13.5 |