平年値（年・月ごとの値）
 |
 |  |
 |  |  |  |  |
 |  |  |  |
室蘭（胆振地方) 平年値（年・月ごとの値） 詳細（雪）
| 要素 | 雪 | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 降雪の深さ | 各階級別の日数(降雪の深さ) | 最深積雪 (cm) | 各階級別の日数(最深積雪) | ||||||||||||||
| 合計 (cm) | 日合計の最大 (cm) | ≧1cm | ≧3cm | ≧5cm | ≧10cm | ≧20cm | ≧50cm | ≧100cm | ≧0cm | ≧1cm | ≧5cm | ≧10cm | ≧20cm | ≧50cm | ≧100cm | ||
| 統計期間 | 1991～ 2020 | 1991～ 2020 | 1991～ 2020 | 1991～ 2020 | 1991～ 2020 | 1991～ 2020 | 1991～ 2020 | 1991～ 2020 | 1991～ 2020 | 1991～ 2020 | 1991～ 2020 | 1991～ 2020 | 1991～ 2020 | 1991～ 2020 | 1991～ 2020 | 1991～ 2020 | 1991～ 2020 |
| 資料年数 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 |
| 1月 | 49 | 13 | 15.5 | 5.5 | 3.0 | 1.0 | 0.1 | 0.0 | 0.0 | 19 | 28.6 @ | 25.2 | 16.1 | 9.4 | 3.4 | 0.0 | 0.0 |
| 2月 | 45 | 12 | 13.8 | 5.3 | 3.2 | 1.0 | 0.1 | 0.0 | 0.0 | 22 | 26.0 @ | 24.6 | 21.3 | 15.8 | 5.8 | 0.0 | 0.0 |
| 3月 | 27 | 9 | 7.8 | 3.4 | 2.0 | 0.6 | 0.1 | 0.0 | 0.0 | 18 | 16.4 @ | 13.4 | 9.2 | 6.2 | 2.9 | 0.0 | 0.0 |
| 4月 | 4 | 3 | 0.8 | 0.5 | 0.4 | 0.2 | 0.0 | 0.0 | 0.0 | 3 | 1.6 @ | 1.1 | 0.6 | 0.2 | 0.0 | 0.0 | 0.0 |
| 5月 | --- | --- | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | --- | 0.0 @ | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| 6月 | --- | --- | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | --- | 0.0 @ | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| 7月 | --- | --- | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | --- | 0.0 @ | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| 8月 | --- | --- | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | --- | 0.0 @ | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| 9月 | --- | --- | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | --- | 0.0 @ | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| 10月 | --- | --- | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | --- | 0.0 @ | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| 11月 | 5 | 3 | 2.0 | 0.6 | 0.2 | 0.1 | 0.0 | 0.0 | 0.0 | 2 | 4.9 @ | 2.5 | 0.2 | 0.1 | 0.0 | 0.0 | 0.0 |
| 12月 | 27 | 8 | 9.5 | 3.3 | 1.4 | 0.5 | 0.1 | 0.0 | 0.0 | 9 | 20.1 @ | 14.2 | 4.8 | 1.4 | 0.2 | 0.0 | 0.0 |
| 年 | 157 | 17 | 49.5 | 18.6 | 10.1 | 3.3 | 0.3 | 0.0 | 0.0 | 26 | 97.1 @ | 81.1 | 52.2 | 33.0 | 12.3 | 0.0 | 0.0 |
- 「@」の付いた値は、参考値です。平年差や平年比に利用できません。