平年値（日ごとの値）
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八丈島 5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 | /// | 13.4 | 12.4 | 10.3 | 8.0 | 2.7 | -4.0 | -12.3 | -23.1 | -29.8 | -37.7 | -46.9 | -56.2 | -59.6 | -61.5 | -63.7 | -66.5 | -66.4 | -60.7 | -57.2 | -53.8 | /// | /// | /// | /// |
| 2日 | /// | 13.6 | 12.5 | 10.5 | 8.2 | 2.8 | -3.8 | -12.1 | -22.9 | -29.6 | -37.5 | -46.7 | -56.1 | -59.6 | -61.6 | -63.8 | -66.6 | -66.4 | -60.7 | -57.2 | -53.8 | /// | /// | /// | /// |
| 3日 | /// | 13.8 | 12.7 | 10.7 | 8.4 | 3.0 | -3.6 | -11.9 | -22.7 | -29.4 | -37.3 | -46.6 | -56.1 | -59.7 | -61.8 | -63.9 | -66.7 | -66.5 | -60.7 | -57.2 | -53.8 | /// | /// | /// | /// |
| 4日 | /// | 13.9 | 12.9 | 10.9 | 8.6 | 3.2 | -3.5 | -11.7 | -22.4 | -29.2 | -37.1 | -46.4 | -56.0 | -59.8 | -61.9 | -64.1 | -66.9 | -66.6 | -60.7 | -57.2 | -53.8 | /// | /// | /// | /// |
| 5日 | /// | 14.1 | 13.1 | 11.1 | 8.8 | 3.4 | -3.3 | -11.5 | -22.2 | -28.9 | -36.8 | -46.2 | -55.9 | -59.8 | -62.1 | -64.2 | -67.0 | -66.7 | -60.7 | -57.2 | -53.7 | /// | /// | /// | /// |
| 6日 | /// | 14.3 | 13.3 | 11.3 | 9.0 | 3.5 | -3.1 | -11.2 | -21.9 | -28.7 | -36.6 | -46.0 | -55.8 | -59.8 | -62.2 | -64.4 | -67.2 | -66.8 | -60.7 | -57.2 | -53.7 | /// | /// | /// | /// |
| 7日 | /// | 14.4 | 13.4 | 11.5 | 9.1 | 3.7 | -2.9 | -11.0 | -21.7 | -28.5 | -36.4 | -45.8 | -55.7 | -59.9 | -62.3 | -64.6 | -67.3 | -66.9 | -60.6 | -57.1 | -53.7 | /// | /// | /// | /// |
| 8日 | /// | 14.5 | 13.5 | 11.6 | 9.3 | 3.9 | -2.7 | -10.8 | -21.4 | -28.2 | -36.1 | -45.6 | -55.7 | -59.9 | -62.5 | -64.7 | -67.5 | -66.9 | -60.6 | -57.1 | -53.7 | /// | /// | /// | /// |
| 9日 | /// | 14.6 | 13.7 | 11.8 | 9.4 | 4.0 | -2.6 | -10.6 | -21.2 | -28.0 | -35.9 | -45.5 | -55.6 | -59.9 | -62.6 | -64.9 | -67.7 | -67.0 | -60.6 | -57.1 | -53.7 | /// | /// | /// | /// |
| 10日 | /// | 14.7 | 13.8 | 11.9 | 9.5 | 4.1 | -2.5 | -10.5 | -21.0 | -27.8 | -35.7 | -45.3 | -55.5 | -59.9 | -62.7 | -65.0 | -67.8 | -67.1 | -60.6 | -57.0 | -53.6 | /// | /// | /// | /// |
| 11日 | /// | 14.8 | 13.9 | 12.0 | 9.6 | 4.2 | -2.3 | -10.3 | -20.8 | -27.6 | -35.5 | -45.2 | -55.4 | -59.9 | -62.8 | -65.1 | -67.9 | -67.1 | -60.6 | -57.0 | -53.6 | /// | /// | /// | /// |
| 12日 | /// | 14.8 | 14.0 | 12.1 | 9.7 | 4.3 | -2.3 | -10.2 | -20.6 | -27.4 | -35.4 | -45.0 | -55.3 | -59.8 | -62.8 | -65.2 | -68.0 | -67.1 | -60.5 | -57.0 | -53.6 | /// | /// | /// | /// |
| 13日 | /// | 14.9 | 14.0 | 12.2 | 9.8 | 4.4 | -2.2 | -10.1 | -20.5 | -27.2 | -35.2 | -44.9 | -55.2 | -59.8 | -62.9 | -65.3 | -68.0 | -67.1 | -60.5 | -56.9 | -53.6 | /// | /// | /// | /// |
| 14日 | /// | 15.0 | 14.1 | 12.2 | 9.8 | 4.5 | -2.1 | -10.0 | -20.4 | -27.1 | -35.1 | -44.8 | -55.2 | -59.8 | -62.9 | -65.3 | -68.1 | -67.1 | -60.5 | -56.9 | -53.6 | /// | /// | /// | /// |
| 15日 | /// | 15.1 | 14.2 | 12.3 | 9.9 | 4.6 | -2.0 | -9.9 | -20.3 | -27.0 | -35.0 | -44.7 | -55.1 | -59.7 | -62.9 | -65.3 | -68.1 | -67.1 | -60.4 | -56.9 | -53.6 | /// | /// | /// | /// |
| 16日 | /// | 15.1 | 14.3 | 12.4 | 10.0 | 4.7 | -2.0 | -9.9 | -20.2 | -26.9 | -34.9 | -44.5 | -55.0 | -59.6 | -62.8 | -65.4 | -68.1 | -67.1 | -60.4 | -56.9 | -53.6 | /// | /// | /// | /// |
| 17日 | /// | 15.2 | 14.4 | 12.5 | 10.1 | 4.8 | -1.9 | -9.9 | -20.2 | -26.8 | -34.8 | -44.4 | -54.9 | -59.6 | -62.8 | -65.4 | -68.1 | -67.0 | -60.4 | -56.8 | -53.6 | /// | /// | /// | /// |
| 18日 | /// | 15.3 | 14.4 | 12.6 | 10.2 | 4.9 | -1.8 | -9.8 | -20.1 | -26.7 | -34.7 | -44.3 | -54.7 | -59.5 | -62.8 | -65.4 | -68.1 | -67.0 | -60.3 | -56.8 | -53.6 | /// | /// | /// | /// |
| 19日 | /// | 15.4 | 14.5 | 12.6 | 10.3 | 5.0 | -1.8 | -9.8 | -20.0 | -26.6 | -34.6 | -44.2 | -54.6 | -59.4 | -62.7 | -65.4 | -68.1 | -67.0 | -60.3 | -56.8 | -53.6 | /// | /// | /// | /// |
| 20日 | /// | 15.4 | 14.6 | 12.7 | 10.4 | 5.1 | -1.7 | -9.7 | -20.0 | -26.6 | -34.5 | -44.1 | -54.5 | -59.3 | -62.7 | -65.4 | -68.2 | -66.9 | -60.2 | -56.8 | -53.6 | /// | /// | /// | /// |
| 21日 | /// | 15.5 | 14.7 | 12.8 | 10.5 | 5.1 | -1.6 | -9.7 | -19.9 | -26.5 | -34.4 | -43.9 | -54.4 | -59.2 | -62.6 | -65.4 | -68.2 | -66.9 | -60.2 | -56.8 | -53.6 | /// | /// | /// | /// |
| 22日 | /// | 15.6 | 14.8 | 12.9 | 10.6 | 5.2 | -1.5 | -9.6 | -19.9 | -26.4 | -34.3 | -43.8 | -54.3 | -59.1 | -62.5 | -65.4 | -68.2 | -66.9 | -60.2 | -56.8 | -53.6 | /// | /// | /// | /// |
| 23日 | /// | 15.7 | 14.8 | 12.9 | 10.7 | 5.3 | -1.4 | -9.5 | -19.8 | -26.3 | -34.2 | -43.7 | -54.2 | -59.0 | -62.5 | -65.5 | -68.2 | -66.8 | -60.1 | -56.8 | -53.6 | /// | /// | /// | /// |
| 24日 | /// | 15.8 | 14.9 | 13.0 | 10.7 | 5.4 | -1.3 | -9.5 | -19.7 | -26.2 | -34.1 | -43.6 | -54.1 | -59.0 | -62.5 | -65.5 | -68.3 | -66.8 | -60.1 | -56.8 | -53.6 | /// | /// | /// | /// |
| 25日 | /// | 15.9 | 15.0 | 13.1 | 10.8 | 5.4 | -1.2 | -9.4 | -19.6 | -26.0 | -33.9 | -43.4 | -54.0 | -58.9 | -62.5 | -65.5 | -68.3 | -66.8 | -60.1 | -56.8 | -53.6 | /// | /// | /// | /// |
| 26日 | /// | 15.9 | 15.1 | 13.1 | 10.9 | 5.5 | -1.1 | -9.3 | -19.5 | -25.9 | -33.8 | -43.3 | -54.0 | -58.9 | -62.6 | -65.6 | -68.4 | -66.8 | -60.0 | -56.8 | -53.6 | /// | /// | /// | /// |
| 27日 | /// | 16.0 | 15.1 | 13.2 | 10.9 | 5.6 | -1.0 | -9.2 | -19.4 | -25.8 | -33.6 | -43.2 | -53.9 | -58.9 | -62.6 | -65.7 | -68.4 | -66.8 | -60.0 | -56.9 | -53.7 | /// | /// | /// | /// |
| 28日 | /// | 16.1 | 15.2 | 13.3 | 11.0 | 5.7 | -0.9 | -9.1 | -19.3 | -25.6 | -33.5 | -43.1 | -53.9 | -58.9 | -62.7 | -65.7 | -68.4 | -66.8 | -60.0 | /// | /// | /// | /// | /// | /// |
| 29日 | /// | 16.1 | 15.3 | 13.3 | 11.0 | 5.7 | -0.8 | -9.0 | -19.2 | -25.5 | -33.4 | -42.9 | -53.8 | -58.9 | -62.8 | -65.8 | -68.5 | -66.7 | -59.9 | /// | /// | /// | /// | /// | /// |
| 30日 | /// | 16.2 | 15.4 | 13.4 | 11.1 | 5.8 | -0.7 | -8.9 | -19.1 | -25.4 | -33.2 | -42.8 | -53.8 | -59.0 | -63.0 | -65.9 | -68.5 | -66.7 | -59.9 | /// | /// | /// | /// | /// | /// |
| 31日 | /// | 16.3 | 15.5 | 13.5 | 11.1 | 5.9 | -0.6 | -8.7 | -18.9 | -25.2 | -33.1 | -42.7 | -53.8 | -59.0 | -63.1 | -66.0 | -68.5 | -66.7 | -59.9 | /// | /// | /// | /// | /// | /// |