室蘭の降雪量合計(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 |
|---|---|---|---|---|---|---|
| 2025 - 2026 | 170 | 127 | 26 | 3.7 | 6.7 | 0.8 |
| 2024 - 2025 | 243 | 104 | 15 | 5.6 | 8.8 | 2.8 |
| 2023 - 2024 | 244 | 132 | 29 | 5.6 | 9.1 | 2.6 |
| 2022 - 2023 | 243 | 124 | 29 | 5.4 | 8.8 | 2.4 |
| 2021 - 2022 | 243 | 145 | 34 | 5.3 | 8.7 | 2.4 |
| 2020 - 2021 | 243 | 128 | 24 | 4.9 | 8.2 | 2.1 |
| 2019 - 2020 | 244 | 136 | 37 | 5 | 8.4 | 2.2 |
| 2018 - 2019 | 243 | 103 | 20 | 5.2 | 8.7 | 2.4 |
| 2017 - 2018 | 243 | 179 | 30 | 4.4 | 7.6 | 1.6 |
| 2016 - 2017 | 243 | 154 | 34 | 4.3 | 7.6 | 1.3 |
| 2015 - 2016 | 244 | 141 | 30 | 5.1 | 8.4 | 2.3 |
| 2014 - 2015 | 243 | 117 | 22 | 5.2 | 8.5 | 2.3 |
| 2013 - 2014 | 243 | 165 | 35 | 4.7 | 8.1 | 1.8 |
| 2012 - 2013 | 243 | 187 | 26 | 3.7 | 6.8 | 1 |
| 2011 - 2012 | 244 | 188 | 44 | 3.7 | 6.9 | 1.1 |
| 2010 - 2011 | 243 | 193 | 35 | 4.4 | 7.5 | 1.7 |
| 2009 - 2010 | 243 | 241 | 32 | 3.7 | 6.8 | 1.1 |
| 2008 - 2009 | 243 | 189 | 28 | 5.1 | 8.4 | 2.2 |
| 2007 - 2008 | 244 | 130 | 27 | 4.3 | 7.5 | 1.7 |
| 2006 - 2007 | 243 | 113 | 16 | 4.9 | 8 | 2.2 |
| 2005 - 2006 | 243 | 248 | 29 | 3.9 | 6.9 | 1.3 |
| 2004 - 2005 | 243 | 149 | 54 | 4.2 | 7.1 | 1.7 |
| 2003 - 2004 | 244 | 71 | 12 | 4.8 | 8 | 2 |
| 2002 - 2003 | 243 | 120 | 27 | 3.5 | 6.5 | 0.8 |
| 2001 - 2002 | 243 | 94 | 14 | 4.8 | 7.8 | 2.1 |
| 2000 - 2001 | 243 | 102 | 27 | 3.2 | 6.3 | 0.5 |
| 1999 - 2000 | 244 | 134 | 31 | 4.2 | 7 | 1.7 |
| 1998 - 1999 | 243 | 159 | 25 | 3.9 | 7.1 | 1.1 |
| 1997 - 1998 | 243 | 102 | 22 | 4.4 | 7.6 | 1.5 |
| 1996 - 1997 | 243 | 106 | 25 | 4.3 | 7.3 | 1.5 |
| 1995 - 1996 | 244 | 135 | 16 | 4 | 6.8 | 1.5 |
| 1994 - 1995 | 243 | 90 | 14 | 4.5 | 7.4 | 1.8 |
| 1993 - 1994 | 243 | 102 | 17 | 4.2 | 7.1 | 1.6 |
| 1992 - 1993 | 243 | 125 | 30 | 4.3 | 7.2 | 1.8 |
| 1991 - 1992 | 244 | 115 | 20 | 4.2 | 7 | 1.7 |
| 1990 - 1991 | 243 | 77 | 15 | 5.6 | 8.4 | 3 |
| 1989 - 1990 | 243 | 106 | 34 | 5.1 | 8.1 | 2.5 |
| 1988 - 1989 | 243 | 85 | 10 | 4.4 | 7.4 | 1.8 |
| 1987 - 1988 | 244 | 139 | 37 | 3.5 | 6.4 | 0.8 |
| 1986 - 1987 | 243 | 92 | 21 | 3.4 | 6.4 | 0.6 |
| 1985 - 1986 | 243 | 177 | 27 | 3.1 | 5.7 | 0.7 |
| 1984 - 1985 | 243 | 191 | 49 | 3 | 5.6 | 0.5 |
| 1983 - 1984 | 244 | 220 | 41 | 2.2 | 4.8 | -0.2 |
| 1982 - 1983 | 243 | 117 | 21 | 4.7 | 7.6 | 2 |
| 1981 - 1982 | 243 | 117 | 29 | 3.5 | 6.2 | 1 |
| 1980 - 1981 | 243 | 202 | 39 | 3.8 | 6.4 | 1.4 |
| 1979 - 1980 | 244 | 142 | 12 | 4 | 7 | 1.3 |
| 1978 - 1979 | 243 | 176 | 38 | 3.5 | 6.4 | 0.7 |
| 1977 - 1978 | 243 | 134 | 51 | 3.3 | 6.1 | 0.7 |
| 1976 - 1977 | 243 | 157 | 40 | 2.9 | 5.6 | 0.5 |
| 1975 - 1976 | 244 | 119 | 26 | 3.9 | 6.7 | 1.3 |
| 1974 - 1975 | 243 | 167 | 20 | 3.5 | 6.1 | 1.2 |
| 1973 - 1974 | 243 | 112 | 10 | 4 | 6.8 | 1.5 |
| 1972 - 1973 | 243 | 187 | 52 | 4.6 | 7.5 | 1.9 |
| 1971 - 1972 | 244 | 140 | 26 | 4.3 | 7.3 | 1.7 |
| 1970 - 1971 | 243 | 114 | 34 | 3.6 | 6.5 | 1.1 |
| 1969 - 1970 | 243 | 151 | 46 | 3.1 | 5.9 | 0.5 |
| 1968 - 1969 | 243 | 111 | 34 | 3.8 | 6.7 | 1.1 |
| 1967 - 1968 | 244 | 115 | 33 | 3.8 | 6.6 | 1.3 |
| 1966 - 1967 | 243 | 120 | 25 | 4 | 6.9 | 1.4 |
| 1965 - 1966 | 243 | 113 | 17 | 3.9 | 6.8 | 1.1 |
| 1964 - 1965 | 243 | 117 | 16 | 3.4 | 6 | 0.9 |
| 1963 - 1964 | 244 | 107 | 18 | 4.2 | 6.9 | 1.6 |
| 1962 - 1963 | 243 | 166 | 39 | 4.4 | 7.2 | 1.7 |
| 1961 - 1962 | 243 | 77 | 8 | 4.6 | 7.3 | 2 |
| 1960 - 1961 | 243 | 88 | 35 | 3.9 | 6.6 | 1.2 |