平年値（日ごとの値）
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八丈島 6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 | /// | 16.4 | 15.6 | 13.5 | 11.2 | 6.0 | -0.5 | -8.6 | -18.8 | -25.1 | -33.0 | -42.6 | -53.8 | -59.1 | -63.3 | -66.2 | -68.6 | -66.7 | -59.8 | /// | /// | /// | /// | /// | /// |
| 2日 | /// | 16.5 | 15.7 | 13.7 | 11.3 | 6.1 | -0.4 | -8.5 | -18.7 | -25.0 | -32.8 | -42.5 | -53.8 | -59.2 | -63.5 | -66.3 | -68.6 | -66.6 | -59.8 | /// | /// | /// | /// | /// | /// |
| 3日 | /// | 16.6 | 15.8 | 13.8 | 11.4 | 6.2 | -0.2 | -8.3 | -18.5 | -24.8 | -32.7 | -42.4 | -53.7 | -59.3 | -63.7 | -66.4 | -68.7 | -66.6 | -59.8 | /// | /// | /// | /// | /// | /// |
| 4日 | /// | 16.7 | 15.9 | 13.9 | 11.5 | 6.4 | -0.1 | -8.1 | -18.4 | -24.7 | -32.6 | -42.3 | -53.7 | -59.4 | -63.8 | -66.6 | -68.8 | -66.6 | -59.7 | /// | /// | /// | /// | /// | /// |
| 5日 | /// | 16.8 | 16.0 | 14.0 | 11.7 | 6.5 | 0.0 | -8.0 | -18.2 | -24.6 | -32.5 | -42.2 | -53.7 | -59.4 | -64.0 | -66.7 | -68.9 | -66.5 | -59.7 | /// | /// | /// | /// | /// | /// |
| 6日 | /// | 16.9 | 16.2 | 14.2 | 11.8 | 6.6 | 0.2 | -7.8 | -18.0 | -24.4 | -32.3 | -42.1 | -53.6 | -59.5 | -64.2 | -66.9 | -69.0 | -66.5 | -59.7 | /// | /// | /// | /// | /// | /// |
| 7日 | /// | 17.1 | 16.4 | 14.4 | 12.0 | 6.8 | 0.3 | -7.6 | -17.9 | -24.3 | -32.2 | -41.9 | -53.5 | -59.5 | -64.3 | -67.0 | -69.1 | -66.5 | -59.7 | /// | /// | /// | /// | /// | /// |
| 8日 | /// | 17.2 | 16.5 | 14.5 | 12.1 | 6.9 | 0.5 | -7.4 | -17.7 | -24.1 | -32.0 | -41.8 | -53.5 | -59.5 | -64.4 | -67.2 | -69.2 | -66.5 | -59.7 | /// | /// | /// | /// | /// | /// |
| 9日 | /// | 17.4 | 16.7 | 14.7 | 12.3 | 7.1 | 0.6 | -7.3 | -17.5 | -24.0 | -31.9 | -41.7 | -53.4 | -59.5 | -64.6 | -67.4 | -69.3 | -66.5 | -59.7 | /// | /// | /// | /// | /// | /// |
| 10日 | /// | 17.5 | 16.9 | 14.9 | 12.5 | 7.2 | 0.8 | -7.1 | -17.4 | -23.8 | -31.7 | -41.5 | -53.3 | -59.5 | -64.7 | -67.5 | -69.4 | -66.4 | -59.7 | /// | /// | /// | /// | /// | /// |
| 11日 | /// | 17.7 | 17.0 | 15.0 | 12.6 | 7.3 | 0.9 | -6.9 | -17.2 | -23.7 | -31.6 | -41.4 | -53.3 | -59.5 | -64.8 | -67.7 | -69.6 | -66.4 | -59.7 | /// | /// | /// | /// | /// | /// |
| 12日 | /// | 17.8 | 17.2 | 15.2 | 12.8 | 7.4 | 1.0 | -6.8 | -17.0 | -23.5 | -31.4 | -41.2 | -53.2 | -59.5 | -64.9 | -67.9 | -69.7 | -66.4 | -59.6 | /// | /// | /// | /// | /// | /// |
| 13日 | /// | 18.0 | 17.3 | 15.4 | 12.9 | 7.6 | 1.2 | -6.6 | -16.9 | -23.3 | -31.2 | -41.1 | -53.1 | -59.5 | -65.0 | -68.0 | -69.8 | -66.4 | -59.6 | -56.6 | /// | /// | /// | /// | /// |
| 14日 | /// | 18.1 | 17.5 | 15.5 | 13.1 | 7.7 | 1.3 | -6.5 | -16.7 | -23.1 | -31.0 | -41.0 | -53.0 | -59.4 | -65.0 | -68.2 | -69.9 | -66.4 | -59.6 | -56.6 | /// | /// | /// | /// | /// |
| 15日 | /// | 18.3 | 17.6 | 15.7 | 13.2 | 7.8 | 1.4 | -6.4 | -16.5 | -23.0 | -30.9 | -40.8 | -52.9 | -59.4 | -65.1 | -68.3 | -70.0 | -66.4 | -59.6 | -56.6 | /// | /// | /// | /// | /// |
| 16日 | /// | 18.4 | 17.7 | 15.9 | 13.4 | 8.0 | 1.5 | -6.2 | -16.4 | -22.8 | -30.7 | -40.7 | -52.8 | -59.4 | -65.2 | -68.5 | -70.1 | -66.4 | -59.6 | -56.6 | /// | /// | /// | /// | /// |
| 17日 | /// | 18.5 | 17.9 | 16.0 | 13.6 | 8.1 | 1.6 | -6.1 | -16.2 | -22.7 | -30.6 | -40.6 | -52.7 | -59.3 | -65.2 | -68.6 | -70.2 | -66.4 | -59.6 | -56.6 | /// | /// | /// | /// | /// |
| 18日 | /// | 18.7 | 18.0 | 16.2 | 13.7 | 8.2 | 1.7 | -6.0 | -16.1 | -22.5 | -30.4 | -40.4 | -52.7 | -59.3 | -65.3 | -68.8 | -70.4 | -66.5 | -59.6 | -56.6 | /// | /// | /// | /// | /// |
| 19日 | /// | 18.8 | 18.1 | 16.3 | 13.9 | 8.4 | 1.8 | -5.9 | -15.9 | -22.4 | -30.3 | -40.3 | -52.6 | -59.3 | -65.3 | -69.0 | -70.5 | -66.5 | -59.6 | -56.6 | /// | /// | /// | /// | /// |
| 20日 | /// | 18.9 | 18.3 | 16.5 | 14.0 | 8.5 | 1.9 | -5.7 | -15.8 | -22.3 | -30.2 | -40.2 | -52.5 | -59.2 | -65.3 | -69.1 | -70.7 | -66.5 | -59.7 | -56.7 | /// | /// | /// | /// | /// |
| 21日 | /// | 19.1 | 18.4 | 16.6 | 14.2 | 8.6 | 2.0 | -5.6 | -15.6 | -22.1 | -30.0 | -40.1 | -52.4 | -59.2 | -65.4 | -69.3 | -70.8 | -66.5 | -59.7 | -56.7 | /// | /// | /// | /// | /// |
| 22日 | /// | 19.2 | 18.6 | 16.8 | 14.3 | 8.8 | 2.1 | -5.5 | -15.5 | -22.0 | -29.9 | -40.0 | -52.3 | -59.1 | -65.4 | -69.4 | -71.0 | -66.5 | -59.7 | -56.7 | /// | /// | /// | /// | /// |
| 23日 | /// | 19.3 | 18.7 | 16.9 | 14.5 | 8.9 | 2.2 | -5.4 | -15.4 | -21.9 | -29.8 | -39.9 | -52.3 | -59.1 | -65.4 | -69.5 | -71.1 | -66.6 | -59.7 | -56.7 | /// | /// | /// | /// | /// |
| 24日 | /// | 19.5 | 18.9 | 17.1 | 14.7 | 9.0 | 2.3 | -5.3 | -15.3 | -21.8 | -29.7 | -39.8 | -52.2 | -59.0 | -65.4 | -69.6 | -71.3 | -66.6 | -59.8 | -56.7 | /// | /// | /// | /// | /// |
| 25日 | /// | 19.6 | 19.1 | 17.3 | 14.8 | 9.2 | 2.4 | -5.2 | -15.2 | -21.7 | -29.7 | -39.7 | -52.1 | -59.0 | -65.4 | -69.7 | -71.4 | -66.5 | -59.8 | -56.8 | -53.3 | /// | /// | /// | /// |
| 26日 | /// | 19.8 | 19.2 | 17.4 | 15.0 | 9.3 | 2.4 | -5.2 | -15.2 | -21.7 | -29.6 | -39.7 | -52.1 | -59.0 | -65.4 | -69.8 | -71.5 | -66.5 | -59.8 | -56.8 | -53.3 | /// | /// | /// | /// |
| 27日 | /// | 19.9 | 19.4 | 17.6 | 15.1 | 9.4 | 2.5 | -5.1 | -15.1 | -21.6 | -29.6 | -39.6 | -52.0 | -58.9 | -65.4 | -69.9 | -71.6 | -66.5 | -59.8 | -56.8 | -53.3 | /// | /// | /// | /// |
| 28日 | /// | 20.1 | 19.5 | 17.7 | 15.3 | 9.5 | 2.6 | -5.1 | -15.1 | -21.6 | -29.5 | -39.6 | -52.0 | -58.9 | -65.4 | -69.9 | -71.6 | -66.5 | -59.9 | -56.8 | -53.3 | /// | /// | /// | /// |
| 29日 | /// | 20.2 | 19.7 | 17.9 | 15.4 | 9.6 | 2.6 | -5.0 | -15.0 | -21.5 | -29.5 | -39.5 | -51.9 | -58.8 | -65.4 | -69.9 | -71.6 | -66.4 | -59.9 | -56.8 | -53.3 | /// | /// | /// | /// |
| 30日 | /// | 20.4 | 19.8 | 18.0 | 15.5 | 9.6 | 2.6 | -5.0 | -15.0 | -21.5 | -29.5 | -39.5 | -51.9 | -58.8 | -65.3 | -70.0 | -71.6 | -66.4 | -59.9 | -56.8 | -53.3 | /// | /// | /// | /// |