月ごとの値
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寿都（後志地方) 2009年（月ごとの値） 詳細（気温・蒸気圧・湿度）
| 月 | 気温(℃) | 蒸気圧 (hPa) | 湿度(％) | ||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 日平均 | 最高気温 | 最低気温 | 各階級の日数（平均） | 各階級の日数（最低） | 各階級の日数（最高） | ||||||||||||||||||
| 平均 | 平均 | 最高 | 最低 | 平均 | 最低 | 最高 | ＜0℃ | ≧25℃ | ＜0℃ | ≧25℃ | ＜0℃ | ≧25℃ | ≧30℃ | ≧35℃ | 平均 | 平均 | 最小 | ||||||
| 値 | 日 | 値 | 日 | 値 | 日 | 値 | 日 | 値 | 日 | ||||||||||||||
| -0.6 | 1.3 | 6.7 | 23 | -3.3 | 24 | -3.4 | -10.3 | 25 | 1.2 | 01 | 19 | 0 | 28 | 0 | 10 | 0 | 0 | 0 | 4.3 | 72 | 39 | 24 | |
| -1.5 | 1.1 | 7.4 | 14 | -4.1 | 19 | -4.2 | -8.2 | 16 | 1.4 | 14 | 21 | 0 | 27 | 0 | 9 | 0 | 0 | 0 | 3.8 | 68 | 36 | 15 | |
| 1.1 | 4.1 | 11.0 | 19 | -1.2 | 02 | -1.9 | -6.0 | 11 | 3.4 | 18 | 10 | 0 | 25 | 0 | 2 | 0 | 0 | 0 | 4.6 | 68 | 26 | 21 | |
| 6.6 | 10.5 | 21.6 | 30 | 4.4 | 01 | 2.5 | -1.8 | 01 | 7.3 | 10 | 0 | 0 | 7 | 0 | 0 | 0 | 0 | 0 | 6.2 | 64 | 14 | 30 | |
| 12.1 | 16.7 | 23.8 | 21 | 9.9 | 12 | 7.8 | 2.3 | 06 | 12.7 | 22 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 10.0 | 72 | 15 | 09 | |
| 15.5 | 19.4 | 27.0 | 25 | 14.1 | 01 | 12.7 | 10.0 | 01 | 16.1 | 26 | 0 | 0 | 0 | 0 | 0 | 4 | 0 | 0 | 14.5 | 83 | 37 | 24 | |
| 18.4 | 21.5 | 25.7 | 07 | 16.5 | 03 | 15.9 | 12.8 | 03 | 18.7 | 26 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 18.6 | 88 | 56 | 17 | |
| 20.0 | 23.6 | 28.5 | 10 | 19.7 | 27 | 17.2 | 13.6 | 26 | 20.7 | 11 | 0 | 0 | 0 | 0 | 0 | 8 | 0 | 0 | 19.7 | 84 | 40 | 21 | |
| 17.3 | 20.9 | 24.6 | 02 | 16.9 | 21 | 13.8 | 9.9 | 27* | 17.9 | 05 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 15.2 | 77 | 41 | 20 | |
| 12.3 | 15.7 | 20.0 | 01 | 6.0 | 31 | 8.7 | 2.1 | 31 | 15.8 | 02 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 10.4 | 72 | 42 | 31* | |
| 5.5 | 7.9 | 17.2 | 07 | 1.6 | 20 | 2.7 | -2.8 | 02 | 12.5 | 08 | 1 | 0 | 8 | 0 | 0 | 0 | 0 | 0 | 6.8 | 72 | 44 | 24 | |
| -0.1 | 2.1 | 9.0 | 05 | -4.5 | 15 | -2.8 | -6.7 | 18* | 3.1 | 12 | 14 | 0 | 26 | 0 | 9 | 0 | 0 | 0 | 4.3 | 69 | 38 | 21 | |