月ごとの値
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留萌（留萌地方) 1988年（月ごとの値） 詳細（日照・雪・その他）
| 月 | 日照時間(h) | 全天日射量 (MJ/㎡) | 雪(cm) | 雲量 | 大気現象 | ||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 合計 | 日照率 | 各階級の日数 | 降雪 | 各階級の日数（降雪） | 最深積雪 | 各階級の日数（最深積雪） | 平均 | 各階級の日数 | 雪日数 | 霧日数 | 雷日数 | ||||||||||||||||||
| 不照 | 日照率 ≧40% | 平均 | 合計 | 日合計の最大 | ≧3cm | ≧5cm | ≧10cm | ≧20cm | ≧50cm | ≧100cm | 値 | 日 | ≧0cm | ≧1cm | ≧5cm | ≧10cm | ≧20cm | ≧50cm | ≧100cm | ＜1.5 | ≧8.5 | ||||||||
| 値 | 日 | ||||||||||||||||||||||||||||
| 27.9 | 10 | 6 | 1 | 3.5 | 60 | 20 | 10 | 8 | 5 | 1 | 1 | 0 | 0 | 44 | 10 | 31 | 31 | 31 | 31 | 31 | 0 | 0 | 9.6 | 0 | 29 | 30 | 0 | 0 | |
| 81.0 | 27 | 1 | 5 | 6.9 | 121 | 12 | 18 | 17 | 12 | 3 | 0 | 0 | 0 | 73 | 24 | 29 | 29 | 29 | 29 | 29 | 22 | 0 | 8.8 | 0 | 22 | 27 | 0 | 1 | |
| 139.7 | 38 | 2 | 13 | 11.6 | 46 | 20 | 05 | 5 | 4 | 1 | 1 | 0 | 0 | 79 | 06 | 31 | 31 | 31 | 31 | 31 | 18 | 0 | 7.7 | 1 | 17 | 26 | 0 | 0 | |
| 148.5 | 37 | 3 | 14 | 14.5 | 3 | 2 | 06 | 0 | 0 | 0 | 0 | 0 | 0 | 22 | 01 | 6 | 6 | 3 | 2 | 1 | 0 | 0 | 7.4 | 2 | 14 | 4 | 3 | 0 | |
| 218.5 | 48 | 2 | 19 | 18.4 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 7.3 | 0 | 16 | 0 | 4 | 0 | |||
| 177.8 | 39 | 6 | 14 | 17.5 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8.1 | 1 | 15 | 0 | 2 | 0 | |||
| 232.0 | 50 | 2 | 20 | 19.4 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 7.2 | 1 | 12 | 0 | 1 | 0 | |||
| 177.8 | 41 | 0 | 14 | 15.4 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 7.9 | 2 | 20 | 0 | 2 | 3 | |||
| 214.7 | 57 | 0 | 21 | 14.7 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6.4 | 1 | 9 | 0 | 4 | 2 | |||
| 108.2 | 32 | 3 | 11 | 7.7 | 0 | 0 | 15* | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 7.7 | 0 | 12 | 0 | 0 | 6 | ||
| 89.8 | 31 | 6 | 10 | 4.8 | 37 | 20 | 03 | 3 | 2 | 2 | 1 | 0 | 0 | 20 | 03 | 17 | 13 | 7 | 2 | 1 | 0 | 0 | 8.2 | 2 | 20 | 16 | 0 | 0 | |
| 21.8 | 8 | 12 | 2 | 2.6 | 70 | 18 | 20 | 7 | 4 | 3 | 0 | 0 | 0 | 28 | 28* | 26 | 23 | 18 | 15 | 10 | 0 | 0 | 9.5 | 0 | 29 | 26 | 0 | 1 | |