平年値（年・月ごとの値）
 |
 |
 |  |  |  |  |
 |  |  |  |
初山別（留萌地方) 平年値（年・月ごとの値） 詳細(雪)
| 要素 | 雪 | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 降雪の深さ | 各階級の日数(降雪の深さ) | 最深積雪 (cm) | 各階級の日数(最深積雪) | |||||||||||
| 合計 (cm) | 日合計の最大 (cm) | ≧3cm | ≧5cm | ≧10cm | ≧20cm | ≧50cm | ≧100cm | ≧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 |
| 資料年数 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 |
| 1月 | 191 | 24 | 20.3 | 15.5 | 7.1 | 1.0 | 0.0 | 0.0 | 67 | 30.9 | 30.3 | 28.9 | 13.2 | 0.0 |
| 2月 | 148 | 20 | 17.4 | 11.7 | 4.8 | 0.9 | 0.0 | 0.0 | 75 | 28.3 | 28.3 | 27.8 | 18.7 | 0.6 |
| 3月 | 102 | 15 | 14.0 | 7.7 | 2.2 | 0.2 | 0.0 | 0.0 | 63 | 27.5 | 26.8 | 24.2 | 11.9 | 0.3 |
| 4月 | 11 | 4 | 1.4 | 0.7 | 0.2 | 0.0 | 0.0 | 0.0 | 16 | 3.3 | 2.6 | 1.8 | 0.4 | 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 10月 | 0 | 1 | 0.1 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| 11月 | 43 | 14 | 4.9 | 3.4 | 1.3 | 0.3 | 0.0 | 0.0 | 16 | 5.3 | 2.8 | 1.3 | 0.0 | 0.0 |
| 12月 | 164 | 24 | 16.7 | 11.9 | 6.1 | 1.2 | 0.0 | 0.0 | 47 | 24.6 | 21.9 | 16.0 | 2.8 | 0.0 |
| 年 | 658 | 30 | 74.9 | 50.6 | 21.7 | 3.6 | 0.0 | 0.0 | 81 | 120.5 | 113.6 | 102.7 | 50.2 | 1.0 |