１時間ごとの値
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倶知安（後志地方) 2017年8月21日 （１時間ごとの値）
| 時 | 気圧(hPa) | 降水量 (mm) | 気温 (℃) | 露点 温度 (℃) | 蒸気圧 (hPa) | 湿度 (％) | 風向・風速(m/s) | 日照 時間 (h) | 全天 日射量 (MJ/㎡) | 雪(cm) | 天気 | 雲量 | 視程 (km) | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 現地 | 海面 | 風速 | 風向 | 降雪 | 積雪 | |||||||||||
| 1 | 993.0 | 1015.0 | -- | 17.3 | 15.8 | 18.0 | 91 | 3.2 | 南南西 | × | × |  | 15.3 | |||
| 2 | 992.9 | 1015.0 | -- | 17.0 | 15.9 | 18.0 | 93 | 3.5 | 南南西 | × | × | | 13.8 | |||
| 3 | 992.7 | 1014.9 | -- | 15.9 | 15.1 | 17.2 | 95 | 2.6 | 南 | × | × | | 9.83 | |||
| 4 | 992.8 | 1015.0 | -- | 15.6 | 14.8 | 16.8 | 95 | 3.6 | 南南東 | × | × | | 11.9 | |||
| 5 | 993.1 | 1015.2 | -- | 16.1 | 14.8 | 16.8 | 92 | 2.3 | 南南東 | 0.0 | × | × | | 20.0 | ||
| 6 | 993.0 | 1015.1 | -- | 16.5 | 15.0 | 17.1 | 91 | 3.7 | 東南東 | 0.3 | × | × | | 20.0 | ||
| 7 | 992.8 | 1014.8 | -- | 17.4 | 15.6 | 17.7 | 89 | 4.9 | 東南東 | 0.0 | × | × |  | 20.0 | ||
| 8 | 993.1 | 1015.0 | -- | 19.0 | 16.6 | 18.9 | 86 | 2.5 | 南南東 | 0.0 | × | × | | 20.0 | ||
| 9 | 993.1 | 1014.8 | -- | 20.9 | 16.7 | 19.0 | 77 | 6.2 | 南南西 | 0.5 | × | × | | 20.0 | ||
| 10 | 992.9 | 1014.6 | -- | 21.5 | 16.9 | 19.2 | 75 | 6.2 | 南南西 | 0.8 | × | × | | 20.0 | ||
| 11 | 992.3 | 1013.9 | -- | 22.2 | 16.7 | 19.0 | 71 | 6.9 | 南南西 | 1.0 | × | × | | 20.0 | ||
| 12 | 991.8 | 1013.3 | -- | 23.5 | 17.3 | 19.7 | 68 | 6.3 | 南南西 | 1.0 | × | × | | 20.0 | ||
| 13 | 991.5 | 1013.0 | -- | 23.2 | 17.7 | 20.2 | 71 | 6.0 | 南南西 | 0.9 | × | × | | 20.0 | ||
| 14 | 990.9 | 1012.3 | -- | 24.4 | 17.6 | 20.2 | 66 | 6.0 | 南南西 | 0.8 | × | × | | 20.0 | ||
| 15 | 990.6 | 1012.0 | -- | 24.0 | 17.7 | 20.3 | 68 | 5.7 | 南南西 | 1.0 | × | × | | 20.0 | ||
| 16 | 990.7 | 1012.1 | -- | 24.0 | 17.5 | 20.0 | 67 | 5.2 | 南南西 | 1.0 | × | × | | 20.0 | ||
| 17 | 990.9 | 1012.5 | -- | 22.0 | 17.6 | 20.1 | 76 | 4.7 | 南南西 | 0.7 | × | × | | 20.0 | ||
| 18 | 991.2 | 1013.0 | -- | 20.1 | 17.1 | 19.5 | 83 | 6.2 | 南南西 | 0.0 | × | × | | 20.0 | ||
| 19 | 991.6 | 1013.4 | -- | 19.3 | 17.1 | 19.5 | 87 | 2.8 | 南南西 | 0.0 | × | × | | 20.0 | ||
| 20 | 991.9 | 1013.8 | -- | 18.7 | 17.2 | 19.6 | 91 | 2.4 | 南 | × | × | | 20.0 | |||
| 21 | 991.9 | 1013.8 | -- | 18.9 | 17.2 | 19.7 | 90 | 2.5 | 南 | × | × | | 17.8 | |||
| 22 | 991.5 | 1013.4 | -- | 18.4 | 17.3 | 19.7 | 93 | 1.6 | 南東 | × | × | | 13.8 | |||
| 23 | 991.2 | 1013.1 | 0.0 | 18.4 | 17.6 | 20.1 | 95 | 1.8 | 南南東 | × | × |  | 10.2 | |||
| 24 | 990.8 | 1012.7 | 0.0 | 18.5 | 17.9 | 20.4 | 96 | 1.8 | 南南西 | × | × | | 10.7 | |||
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