平年値（日ごとの値）
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八丈島 10月21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 | 1993～ 2020 |
| 資料年数 | 21 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 28 | 24 | 3 |
| 1日 | /// | 18.5 | 17.4 | 15.1 | 12.9 | 8.0 | 1.4 | -6.7 | -17.3 | -24.0 | -32.1 | -41.7 | -52.5 | -58.3 | -64.0 | -69.5 | -73.0 | -68.2 | -61.6 | -58.5 | -55.1 | /// | /// | /// | /// |
| 2日 | /// | 18.4 | 17.3 | 15.0 | 12.8 | 8.0 | 1.3 | -6.7 | -17.4 | -24.0 | -32.2 | -41.8 | -52.5 | -58.3 | -64.0 | -69.5 | -73.0 | -68.2 | -61.6 | -58.5 | -55.1 | /// | /// | /// | /// |
| 3日 | /// | 18.3 | 17.2 | 14.9 | 12.7 | 7.9 | 1.2 | -6.8 | -17.5 | -24.1 | -32.3 | -41.8 | -52.5 | -58.3 | -64.0 | -69.5 | -73.0 | -68.3 | -61.7 | -58.6 | -55.2 | /// | /// | /// | /// |
| 4日 | /// | 18.2 | 17.1 | 14.8 | 12.6 | 7.8 | 1.1 | -6.9 | -17.6 | -24.3 | -32.3 | -41.9 | -52.5 | -58.3 | -63.9 | -69.5 | -73.1 | -68.3 | -61.7 | -58.6 | -55.2 | /// | /// | /// | /// |
| 5日 | /// | 18.1 | 17.0 | 14.7 | 12.5 | 7.7 | 1.0 | -7.0 | -17.7 | -24.4 | -32.4 | -41.9 | -52.5 | -58.2 | -63.9 | -69.5 | -73.1 | -68.3 | -61.8 | -58.6 | -55.3 | /// | /// | /// | /// |
| 6日 | /// | 18.0 | 16.9 | 14.6 | 12.4 | 7.5 | 0.9 | -7.1 | -17.8 | -24.5 | -32.5 | -41.9 | -52.5 | -58.2 | -63.9 | -69.5 | -73.1 | -68.4 | -61.8 | -58.7 | -55.3 | /// | /// | /// | /// |
| 7日 | /// | 17.9 | 16.8 | 14.4 | 12.2 | 7.4 | 0.8 | -7.3 | -18.0 | -24.6 | -32.6 | -41.9 | -52.5 | -58.2 | -63.8 | -69.5 | -73.1 | -68.4 | -61.9 | -58.7 | -55.4 | /// | /// | /// | /// |
| 8日 | /// | 17.7 | 16.7 | 14.3 | 12.1 | 7.3 | 0.7 | -7.4 | -18.1 | -24.8 | -32.7 | -42.0 | -52.5 | -58.1 | -63.8 | -69.4 | -73.1 | -68.4 | -61.9 | -58.8 | -55.4 | /// | /// | /// | /// |
| 9日 | /// | 17.6 | 16.5 | 14.2 | 12.0 | 7.1 | 0.5 | -7.6 | -18.3 | -24.9 | -32.8 | -42.0 | -52.4 | -58.1 | -63.7 | -69.4 | -73.1 | -68.4 | -62.0 | -58.8 | -55.5 | /// | /// | /// | /// |
| 10日 | /// | 17.5 | 16.4 | 14.0 | 11.8 | 7.0 | 0.4 | -7.7 | -18.5 | -25.1 | -32.9 | -42.1 | -52.4 | -58.0 | -63.7 | -69.3 | -73.1 | -68.4 | -62.0 | -58.9 | -55.5 | /// | /// | /// | /// |
| 11日 | /// | 17.4 | 16.2 | 13.8 | 11.6 | 6.8 | 0.2 | -7.9 | -18.6 | -25.3 | -33.0 | -42.1 | -52.4 | -58.0 | -63.6 | -69.3 | -73.0 | -68.4 | -62.1 | -59.0 | -55.6 | /// | /// | /// | /// |
| 12日 | /// | 17.2 | 16.0 | 13.7 | 11.5 | 6.7 | 0.1 | -8.1 | -18.8 | -25.4 | -33.2 | -42.2 | -52.4 | -57.9 | -63.6 | -69.2 | -73.0 | -68.3 | -62.1 | -59.0 | -55.6 | /// | /// | /// | /// |
| 13日 | /// | 17.1 | 15.9 | 13.5 | 11.3 | 6.5 | -0.1 | -8.3 | -19.0 | -25.6 | -33.3 | -42.2 | -52.4 | -57.9 | -63.5 | -69.2 | -73.0 | -68.3 | -62.2 | -59.1 | -55.7 | /// | /// | /// | /// |
| 14日 | /// | 16.9 | 15.7 | 13.3 | 11.1 | 6.3 | -0.3 | -8.5 | -19.2 | -25.8 | -33.4 | -42.3 | -52.4 | -57.8 | -63.5 | -69.1 | -72.9 | -68.3 | -62.2 | -59.2 | -55.7 | -52.3 | /// | /// | /// |
| 15日 | /// | 16.8 | 15.5 | 13.1 | 10.9 | 6.1 | -0.5 | -8.7 | -19.3 | -25.9 | -33.6 | -42.4 | -52.4 | -57.8 | -63.4 | -69.0 | -72.8 | -68.2 | -62.3 | -59.3 | -55.8 | -52.4 | /// | /// | /// |
| 16日 | /// | 16.6 | 15.3 | 12.9 | 10.7 | 5.9 | -0.6 | -8.9 | -19.5 | -26.1 | -33.7 | -42.4 | -52.4 | -57.7 | -63.4 | -69.0 | -72.7 | -68.2 | -62.3 | -59.3 | -55.9 | -52.4 | /// | /// | /// |
| 17日 | /// | 16.4 | 15.1 | 12.7 | 10.5 | 5.8 | -0.8 | -9.0 | -19.7 | -26.2 | -33.8 | -42.5 | -52.4 | -57.7 | -63.3 | -68.9 | -72.6 | -68.2 | -62.4 | -59.4 | -56.0 | -52.5 | /// | /// | /// |
| 18日 | /// | 16.3 | 14.9 | 12.5 | 10.3 | 5.6 | -1.0 | -9.2 | -19.8 | -26.4 | -33.9 | -42.6 | -52.4 | -57.6 | -63.2 | -68.8 | -72.5 | -68.2 | -62.4 | -59.5 | -56.0 | -52.6 | /// | /// | /// |
| 19日 | /// | 16.1 | 14.8 | 12.3 | 10.1 | 5.4 | -1.2 | -9.4 | -20.0 | -26.5 | -34.1 | -42.7 | -52.4 | -57.6 | -63.1 | -68.7 | -72.4 | -68.1 | -62.5 | -59.6 | -56.1 | -52.7 | /// | /// | /// |
| 20日 | /// | 15.9 | 14.6 | 12.1 | 9.9 | 5.2 | -1.3 | -9.5 | -20.1 | -26.7 | -34.2 | -42.7 | -52.3 | -57.5 | -63.1 | -68.6 | -72.3 | -68.1 | -62.6 | -59.7 | -56.2 | -52.8 | /// | /// | /// |
| 21日 | /// | 15.8 | 14.4 | 11.9 | 9.7 | 5.1 | -1.5 | -9.7 | -20.3 | -26.8 | -34.3 | -42.8 | -52.3 | -57.5 | -63.0 | -68.5 | -72.2 | -68.1 | -62.6 | -59.7 | -56.3 | -52.9 | /// | /// | /// |
| 22日 | /// | 15.6 | 14.2 | 11.7 | 9.6 | 4.9 | -1.7 | -9.9 | -20.4 | -26.9 | -34.4 | -42.8 | -52.3 | -57.4 | -62.9 | -68.4 | -72.1 | -68.1 | -62.7 | -59.8 | -56.4 | -53.0 | /// | /// | /// |
| 23日 | /// | 15.4 | 14.1 | 11.5 | 9.4 | 4.7 | -1.8 | -10.0 | -20.6 | -27.0 | -34.5 | -42.9 | -52.3 | -57.4 | -62.9 | -68.3 | -72.0 | -68.0 | -62.7 | -59.8 | -56.4 | -53.1 | /// | /// | /// |
| 24日 | /// | 15.3 | 13.9 | 11.4 | 9.2 | 4.6 | -2.0 | -10.2 | -20.7 | -27.2 | -34.6 | -43.0 | -52.4 | -57.4 | -62.8 | -68.2 | -71.9 | -68.0 | -62.7 | -59.8 | -56.5 | -53.2 | /// | /// | /// |
| 25日 | /// | 15.1 | 13.7 | 11.2 | 9.0 | 4.4 | -2.1 | -10.4 | -20.9 | -27.3 | -34.7 | -43.1 | -52.4 | -57.4 | -62.8 | -68.1 | -71.7 | -68.0 | -62.7 | -59.8 | -56.5 | -53.2 | /// | /// | /// |
| 26日 | /// | 15.0 | 13.6 | 11.0 | 8.9 | 4.3 | -2.3 | -10.5 | -21.0 | -27.5 | -34.8 | -43.2 | -52.5 | -57.5 | -62.8 | -68.1 | -71.6 | -67.9 | -62.7 | -59.8 | -56.5 | -53.2 | /// | /// | /// |
| 27日 | /// | 14.8 | 13.4 | 10.9 | 8.7 | 4.1 | -2.5 | -10.7 | -21.2 | -27.6 | -34.9 | -43.3 | -52.5 | -57.5 | -62.8 | -68.1 | -71.5 | -67.9 | -62.7 | -59.7 | -56.5 | -53.3 | /// | /// | /// |
| 28日 | /// | 14.7 | 13.3 | 10.7 | 8.5 | 4.0 | -2.7 | -10.9 | -21.4 | -27.8 | -35.1 | -43.4 | -52.6 | -57.6 | -62.9 | -68.0 | -71.4 | -67.8 | -62.7 | -59.7 | -56.5 | -53.3 | /// | /// | /// |
| 29日 | /// | 14.5 | 13.1 | 10.5 | 8.4 | 3.8 | -2.8 | -11.0 | -21.5 | -27.9 | -35.2 | -43.5 | -52.7 | -57.7 | -62.9 | -68.0 | -71.3 | -67.8 | -62.6 | -59.6 | -56.5 | -53.3 | /// | /// | /// |
| 30日 | /// | 14.4 | 13.0 | 10.4 | 8.2 | 3.6 | -3.0 | -11.2 | -21.7 | -28.1 | -35.4 | -43.7 | -52.8 | -57.7 | -62.9 | -68.0 | -71.2 | -67.7 | -62.6 | -59.6 | -56.5 | -53.2 | /// | /// | /// |
| 31日 | /// | 14.3 | 12.8 | 10.2 | 8.1 | 3.5 | -3.2 | -11.4 | -21.9 | -28.3 | -35.5 | -43.8 | -52.8 | -57.8 | -62.9 | -67.9 | -71.0 | -67.6 | -62.5 | -59.5 | -56.4 | -53.2 | /// | /// | /// |