平年値（日ごとの値）
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八丈島 10月9時
| 要素 | 気温(℃) | ||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 指定気圧面 | 1000hPa | 925hPa | 900hPa | 850hPa | 800hPa | 700hPa | 600hPa | 500hPa | 400hPa | 350hPa | 300hPa | 250hPa | 200hPa | 175hPa | 150hPa | 125hPa | 100hPa | 70hPa | 50hPa | 40hPa | 30hPa | 20hPa | 15hPa | 10hPa | 5hPa |
| 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 | 1991～ 2020 | 1991～ 2020 | 1991～ 2020 | 1991～ 2020 | 1991～ 2020 | 1991～ 2020 | 1991～ 2020 | 2001～ 2019 |
| 資料年数 | 24 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 29 | 29 | 24 | 4 |
| 1日 | /// | 18.3 | 17.2 | 14.9 | 12.7 | 8.0 | 1.2 | -6.9 | -17.4 | -24.2 | -32.3 | -41.9 | -52.7 | -58.3 | -64.0 | -69.5 | -73.2 | -68.5 | -61.6 | -58.6 | -55.0 | -50.9 | /// | /// | /// |
| 2日 | /// | 18.2 | 17.1 | 14.8 | 12.6 | 7.9 | 1.1 | -7.0 | -17.5 | -24.3 | -32.4 | -42.0 | -52.7 | -58.3 | -64.0 | -69.5 | -73.3 | -68.6 | -61.7 | -58.6 | -55.1 | -51.0 | /// | /// | /// |
| 3日 | /// | 18.1 | 17.0 | 14.7 | 12.5 | 7.8 | 1.0 | -7.1 | -17.6 | -24.4 | -32.5 | -42.1 | -52.7 | -58.3 | -64.0 | -69.5 | -73.3 | -68.6 | -61.7 | -58.7 | -55.1 | -51.1 | /// | /// | /// |
| 4日 | /// | 18.1 | 17.0 | 14.6 | 12.4 | 7.7 | 0.9 | -7.2 | -17.7 | -24.5 | -32.6 | -42.1 | -52.7 | -58.3 | -64.0 | -69.5 | -73.3 | -68.6 | -61.8 | -58.7 | -55.2 | -51.2 | /// | /// | /// |
| 5日 | /// | 18.0 | 16.9 | 14.5 | 12.3 | 7.6 | 0.8 | -7.3 | -17.8 | -24.6 | -32.6 | -42.1 | -52.7 | -58.3 | -63.9 | -69.5 | -73.3 | -68.7 | -61.8 | -58.8 | -55.3 | -51.3 | /// | /// | /// |
| 6日 | /// | 17.9 | 16.7 | 14.4 | 12.2 | 7.5 | 0.7 | -7.4 | -18.0 | -24.7 | -32.7 | -42.2 | -52.7 | -58.2 | -63.9 | -69.4 | -73.3 | -68.7 | -61.8 | -58.9 | -55.3 | -51.4 | /// | /// | /// |
| 7日 | /// | 17.8 | 16.6 | 14.2 | 12.1 | 7.3 | 0.5 | -7.6 | -18.1 | -24.9 | -32.8 | -42.2 | -52.7 | -58.2 | -63.9 | -69.4 | -73.3 | -68.7 | -61.9 | -58.9 | -55.4 | -51.4 | /// | /// | /// |
| 8日 | /// | 17.6 | 16.5 | 14.1 | 11.9 | 7.2 | 0.4 | -7.7 | -18.3 | -25.0 | -32.9 | -42.2 | -52.6 | -58.1 | -63.8 | -69.4 | -73.2 | -68.7 | -61.9 | -59.0 | -55.5 | -51.5 | /// | /// | /// |
| 9日 | /// | 17.5 | 16.4 | 14.0 | 11.8 | 7.1 | 0.3 | -7.8 | -18.4 | -25.1 | -33.0 | -42.3 | -52.6 | -58.1 | -63.8 | -69.4 | -73.2 | -68.7 | -62.0 | -59.1 | -55.6 | -51.6 | /// | /// | /// |
| 10日 | /// | 17.4 | 16.2 | 13.8 | 11.6 | 6.9 | 0.2 | -8.0 | -18.6 | -25.3 | -33.2 | -42.3 | -52.6 | -58.0 | -63.7 | -69.3 | -73.1 | -68.7 | -62.0 | -59.1 | -55.7 | -51.6 | /// | /// | /// |
| 11日 | /// | 17.2 | 16.1 | 13.6 | 11.5 | 6.8 | 0.0 | -8.1 | -18.8 | -25.5 | -33.3 | -42.3 | -52.5 | -58.0 | -63.6 | -69.3 | -73.0 | -68.7 | -62.0 | -59.2 | -55.8 | -51.7 | /// | /// | /// |
| 12日 | /// | 17.1 | 15.9 | 13.5 | 11.3 | 6.6 | -0.1 | -8.3 | -18.9 | -25.6 | -33.4 | -42.4 | -52.5 | -57.9 | -63.6 | -69.2 | -73.0 | -68.7 | -62.1 | -59.2 | -55.8 | -51.8 | /// | /// | /// |
| 13日 | /// | 16.9 | 15.7 | 13.3 | 11.1 | 6.5 | -0.3 | -8.5 | -19.1 | -25.8 | -33.5 | -42.4 | -52.5 | -57.9 | -63.5 | -69.2 | -72.9 | -68.6 | -62.1 | -59.3 | -55.9 | -51.8 | /// | /// | /// |
| 14日 | /// | 16.8 | 15.6 | 13.1 | 11.0 | 6.3 | -0.4 | -8.6 | -19.3 | -26.0 | -33.6 | -42.5 | -52.4 | -57.8 | -63.5 | -69.1 | -72.8 | -68.6 | -62.2 | -59.3 | -56.0 | -51.9 | /// | /// | /// |
| 15日 | /// | 16.6 | 15.4 | 12.9 | 10.8 | 6.1 | -0.6 | -8.8 | -19.4 | -26.1 | -33.8 | -42.5 | -52.4 | -57.8 | -63.4 | -69.0 | -72.7 | -68.6 | -62.2 | -59.4 | -56.1 | -51.9 | /// | /// | /// |
| 16日 | /// | 16.5 | 15.3 | 12.8 | 10.6 | 5.9 | -0.8 | -9.0 | -19.6 | -26.3 | -33.9 | -42.6 | -52.4 | -57.7 | -63.3 | -68.9 | -72.6 | -68.5 | -62.3 | -59.5 | -56.2 | -52.0 | /// | /// | /// |
| 17日 | /// | 16.3 | 15.1 | 12.6 | 10.4 | 5.7 | -0.9 | -9.2 | -19.8 | -26.4 | -34.0 | -42.6 | -52.4 | -57.7 | -63.2 | -68.8 | -72.6 | -68.5 | -62.3 | -59.5 | -56.3 | -52.1 | /// | /// | /// |
| 18日 | /// | 16.1 | 14.9 | 12.4 | 10.2 | 5.5 | -1.1 | -9.4 | -19.9 | -26.6 | -34.1 | -42.7 | -52.4 | -57.6 | -63.2 | -68.7 | -72.5 | -68.5 | -62.4 | -59.6 | -56.4 | -52.1 | /// | /// | /// |
| 19日 | /// | 16.0 | 14.8 | 12.2 | 10.0 | 5.3 | -1.3 | -9.5 | -20.1 | -26.7 | -34.2 | -42.7 | -52.4 | -57.5 | -63.1 | -68.6 | -72.4 | -68.4 | -62.4 | -59.7 | -56.5 | -52.2 | /// | /// | /// |
| 20日 | /// | 15.8 | 14.6 | 12.0 | 9.9 | 5.2 | -1.5 | -9.7 | -20.3 | -26.8 | -34.3 | -42.8 | -52.3 | -57.5 | -63.0 | -68.5 | -72.3 | -68.4 | -62.5 | -59.8 | -56.6 | -52.3 | /// | /// | /// |
| 21日 | /// | 15.6 | 14.4 | 11.8 | 9.7 | 5.0 | -1.6 | -9.9 | -20.4 | -26.9 | -34.3 | -42.8 | -52.3 | -57.4 | -62.9 | -68.4 | -72.2 | -68.4 | -62.6 | -59.9 | -56.7 | -52.4 | /// | /// | /// |
| 22日 | /// | 15.5 | 14.2 | 11.6 | 9.5 | 4.8 | -1.8 | -10.1 | -20.6 | -27.0 | -34.4 | -42.9 | -52.3 | -57.4 | -62.9 | -68.3 | -72.1 | -68.3 | -62.6 | -60.0 | -56.7 | -52.5 | /// | /// | /// |
| 23日 | /// | 15.3 | 14.1 | 11.5 | 9.3 | 4.7 | -2.0 | -10.2 | -20.7 | -27.2 | -34.6 | -43.0 | -52.4 | -57.4 | -62.8 | -68.2 | -72.0 | -68.3 | -62.6 | -60.0 | -56.8 | -52.6 | /// | /// | /// |
| 24日 | /// | 15.1 | 13.9 | 11.3 | 9.1 | 4.5 | -2.2 | -10.4 | -20.9 | -27.3 | -34.7 | -43.1 | -52.4 | -57.4 | -62.8 | -68.1 | -71.9 | -68.2 | -62.6 | -60.1 | -56.9 | -52.6 | /// | /// | /// |
| 25日 | /// | 15.0 | 13.7 | 11.1 | 9.0 | 4.3 | -2.3 | -10.6 | -21.1 | -27.4 | -34.8 | -43.2 | -52.4 | -57.4 | -62.7 | -68.1 | -71.8 | -68.2 | -62.6 | -60.1 | -56.9 | -52.7 | /// | /// | /// |
| 26日 | /// | 14.8 | 13.5 | 10.9 | 8.8 | 4.2 | -2.5 | -10.7 | -21.2 | -27.6 | -34.9 | -43.3 | -52.5 | -57.4 | -62.7 | -68.0 | -71.7 | -68.1 | -62.6 | -60.1 | -56.9 | -52.7 | /// | /// | /// |
| 27日 | /// | 14.7 | 13.4 | 10.7 | 8.6 | 4.0 | -2.7 | -10.9 | -21.4 | -27.7 | -35.1 | -43.4 | -52.6 | -57.5 | -62.8 | -68.0 | -71.6 | -68.1 | -62.6 | -60.1 | -57.0 | -52.8 | -50.4 | /// | /// |
| 28日 | /// | 14.5 | 13.2 | 10.6 | 8.4 | 3.8 | -2.8 | -11.1 | -21.6 | -27.9 | -35.2 | -43.5 | -52.7 | -57.5 | -62.8 | -67.9 | -71.5 | -68.0 | -62.5 | -60.0 | -56.9 | -52.8 | -50.4 | /// | /// |
| 29日 | /// | 14.4 | 13.0 | 10.4 | 8.2 | 3.7 | -3.0 | -11.3 | -21.7 | -28.1 | -35.4 | -43.6 | -52.7 | -57.6 | -62.8 | -67.9 | -71.4 | -67.9 | -62.5 | -60.0 | -56.9 | -52.9 | -50.4 | /// | /// |
| 30日 | /// | 14.3 | 12.9 | 10.2 | 8.1 | 3.5 | -3.2 | -11.4 | -21.9 | -28.2 | -35.6 | -43.7 | -52.8 | -57.7 | -62.8 | -67.9 | -71.3 | -67.9 | -62.4 | -60.0 | -56.9 | -52.9 | -50.4 | /// | /// |
| 31日 | /// | 14.1 | 12.7 | 10.1 | 7.9 | 3.3 | -3.4 | -11.6 | -22.1 | -28.4 | -35.7 | -43.9 | -52.9 | -57.7 | -62.8 | -67.8 | -71.1 | -67.8 | -62.4 | -59.9 | -56.9 | -52.9 | -50.4 | /// | /// |