平年値（日ごとの値）
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八丈島 1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 | /// | 5.9 | 4.1 | 0.9 | -1.7 | -5.9 | -12.3 | -19.9 | -29.4 | -34.4 | -39.3 | -44.5 | -51.0 | -55.0 | -59.3 | -63.1 | -65.5 | -64.9 | -60.8 | -58.1 | -55.3 | -52.5 | -50.2 | /// | /// |
| 2日 | /// | 5.8 | 4.0 | 0.8 | -1.7 | -6.0 | -12.4 | -20.0 | -29.5 | -34.5 | -39.4 | -44.6 | -51.0 | -54.9 | -59.2 | -63.0 | -65.5 | -64.8 | -60.8 | -58.1 | -55.3 | -52.6 | -50.3 | /// | /// |
| 3日 | /// | 5.8 | 4.0 | 0.8 | -1.8 | -6.0 | -12.4 | -20.0 | -29.5 | -34.6 | -39.5 | -44.7 | -51.0 | -54.9 | -59.2 | -63.0 | -65.4 | -64.8 | -60.8 | -58.1 | -55.3 | -52.7 | -50.4 | /// | /// |
| 4日 | /// | 5.7 | 3.9 | 0.7 | -1.9 | -6.1 | -12.4 | -20.0 | -29.5 | -34.7 | -39.5 | -44.7 | -51.1 | -55.0 | -59.2 | -62.9 | -65.4 | -64.8 | -60.8 | -58.0 | -55.3 | -52.8 | -50.5 | /// | /// |
| 5日 | /// | 5.7 | 3.9 | 0.7 | -1.9 | -6.1 | -12.4 | -20.0 | -29.5 | -34.7 | -39.6 | -44.7 | -51.2 | -55.0 | -59.2 | -62.9 | -65.4 | -64.8 | -60.7 | -58.0 | -55.3 | -52.9 | -50.6 | /// | /// |
| 6日 | /// | 5.7 | 3.8 | 0.7 | -2.0 | -6.2 | -12.4 | -20.0 | -29.5 | -34.7 | -39.6 | -44.8 | -51.2 | -55.1 | -59.2 | -62.9 | -65.4 | -64.8 | -60.7 | -58.0 | -55.3 | -52.9 | -50.7 | /// | /// |
| 7日 | /// | 5.6 | 3.8 | 0.6 | -2.0 | -6.2 | -12.4 | -20.0 | -29.5 | -34.7 | -39.5 | -44.8 | -51.3 | -55.1 | -59.3 | -62.9 | -65.4 | -64.8 | -60.7 | -58.0 | -55.3 | -53.0 | -50.7 | /// | /// |
| 8日 | /// | 5.6 | 3.8 | 0.6 | -2.1 | -6.3 | -12.5 | -20.0 | -29.5 | -34.7 | -39.5 | -44.8 | -51.3 | -55.2 | -59.3 | -62.9 | -65.4 | -64.8 | -60.7 | -58.0 | -55.4 | -53.1 | -50.8 | /// | /// |
| 9日 | /// | 5.6 | 3.8 | 0.6 | -2.1 | -6.4 | -12.5 | -20.1 | -29.6 | -34.6 | -39.5 | -44.7 | -51.3 | -55.2 | -59.3 | -62.8 | -65.3 | -64.7 | -60.7 | -58.0 | -55.4 | -53.1 | -50.8 | /// | /// |
| 10日 | /// | 5.5 | 3.7 | 0.6 | -2.2 | -6.4 | -12.6 | -20.1 | -29.6 | -34.6 | -39.5 | -44.7 | -51.3 | -55.2 | -59.3 | -62.8 | -65.3 | -64.7 | -60.7 | -58.0 | -55.5 | -53.2 | -50.9 | /// | /// |
| 11日 | /// | 5.5 | 3.7 | 0.5 | -2.2 | -6.5 | -12.6 | -20.1 | -29.6 | -34.7 | -39.5 | -44.6 | -51.3 | -55.2 | -59.2 | -62.8 | -65.3 | -64.7 | -60.7 | -58.0 | -55.6 | -53.2 | -50.9 | /// | /// |
| 12日 | /// | 5.5 | 3.7 | 0.5 | -2.3 | -6.5 | -12.7 | -20.2 | -29.7 | -34.7 | -39.5 | -44.6 | -51.3 | -55.2 | -59.2 | -62.7 | -65.3 | -64.7 | -60.7 | -58.0 | -55.6 | -53.3 | -50.9 | /// | /// |
| 13日 | /// | 5.4 | 3.6 | 0.4 | -2.3 | -6.6 | -12.7 | -20.2 | -29.8 | -34.8 | -39.6 | -44.6 | -51.2 | -55.1 | -59.1 | -62.7 | -65.2 | -64.7 | -60.7 | -58.0 | -55.7 | -53.4 | -51.0 | /// | /// |
| 14日 | /// | 5.4 | 3.6 | 0.4 | -2.3 | -6.6 | -12.8 | -20.3 | -29.9 | -34.9 | -39.7 | -44.5 | -51.1 | -55.1 | -59.1 | -62.6 | -65.2 | -64.7 | -60.7 | -58.1 | -55.8 | -53.4 | -51.1 | /// | /// |
| 15日 | /// | 5.3 | 3.5 | 0.3 | -2.4 | -6.7 | -12.8 | -20.3 | -30.0 | -35.0 | -39.7 | -44.5 | -51.0 | -55.0 | -59.0 | -62.6 | -65.2 | -64.7 | -60.7 | -58.1 | -55.9 | -53.5 | -51.2 | /// | /// |
| 16日 | /// | 5.3 | 3.5 | 0.3 | -2.4 | -6.7 | -12.9 | -20.4 | -30.1 | -35.1 | -39.8 | -44.5 | -51.0 | -54.9 | -58.9 | -62.5 | -65.1 | -64.7 | -60.8 | -58.1 | -55.9 | -53.6 | -51.3 | /// | /// |
| 17日 | /// | 5.2 | 3.4 | 0.2 | -2.5 | -6.8 | -12.9 | -20.4 | -30.2 | -35.2 | -39.9 | -44.5 | -50.9 | -54.8 | -58.8 | -62.5 | -65.1 | -64.7 | -60.8 | -58.1 | -56.0 | -53.7 | -51.4 | /// | /// |
| 18日 | /// | 5.2 | 3.4 | 0.2 | -2.5 | -6.8 | -13.0 | -20.5 | -30.3 | -35.3 | -40.0 | -44.5 | -50.8 | -54.7 | -58.7 | -62.4 | -65.1 | -64.6 | -60.8 | -58.2 | -56.1 | -53.8 | -51.6 | /// | /// |
| 19日 | /// | 5.1 | 3.3 | 0.1 | -2.5 | -6.8 | -13.0 | -20.6 | -30.4 | -35.4 | -40.1 | -44.5 | -50.7 | -54.6 | -58.6 | -62.4 | -65.0 | -64.6 | -60.8 | -58.2 | -56.1 | -53.9 | -51.7 | /// | /// |
| 20日 | /// | 5.0 | 3.3 | 0.0 | -2.6 | -6.9 | -13.1 | -20.6 | -30.5 | -35.5 | -40.1 | -44.5 | -50.6 | -54.5 | -58.6 | -62.4 | -65.0 | -64.6 | -60.9 | -58.2 | -56.2 | -54.0 | -51.9 | /// | /// |
| 21日 | /// | 5.0 | 3.2 | 0.0 | -2.7 | -7.0 | -13.1 | -20.7 | -30.5 | -35.6 | -40.2 | -44.5 | -50.5 | -54.4 | -58.5 | -62.4 | -64.9 | -64.6 | -60.9 | -58.3 | -56.2 | -54.0 | -52.0 | /// | /// |
| 22日 | /// | 4.9 | 3.1 | -0.1 | -2.7 | -7.0 | -13.2 | -20.7 | -30.6 | -35.6 | -40.2 | -44.5 | -50.5 | -54.3 | -58.4 | -62.3 | -64.9 | -64.6 | -60.9 | -58.3 | -56.2 | -54.1 | -52.1 | /// | /// |
| 23日 | /// | 4.8 | 3.1 | -0.2 | -2.8 | -7.1 | -13.3 | -20.8 | -30.6 | -35.6 | -40.2 | -44.5 | -50.4 | -54.3 | -58.3 | -62.3 | -64.8 | -64.6 | -60.9 | -58.3 | -56.3 | -54.1 | -52.1 | /// | /// |
| 24日 | /// | 4.8 | 3.0 | -0.3 | -2.9 | -7.2 | -13.4 | -20.9 | -30.6 | -35.6 | -40.1 | -44.4 | -50.4 | -54.2 | -58.3 | -62.3 | -64.8 | -64.6 | -60.9 | -58.3 | -56.3 | -54.1 | -52.2 | /// | /// |
| 25日 | /// | 4.8 | 3.0 | -0.3 | -2.9 | -7.3 | -13.5 | -20.9 | -30.7 | -35.6 | -40.1 | -44.4 | -50.3 | -54.2 | -58.2 | -62.3 | -64.8 | -64.6 | -60.9 | -58.3 | -56.2 | -54.1 | -52.2 | /// | /// |
| 26日 | /// | 4.7 | 2.9 | -0.4 | -3.0 | -7.4 | -13.5 | -21.0 | -30.7 | -35.6 | -40.1 | -44.4 | -50.3 | -54.1 | -58.2 | -62.3 | -64.8 | -64.6 | -60.9 | -58.3 | -56.2 | -54.1 | -52.2 | /// | /// |
| 27日 | /// | 4.7 | 2.9 | -0.4 | -3.0 | -7.4 | -13.6 | -21.0 | -30.7 | -35.6 | -40.0 | -44.3 | -50.2 | -54.1 | -58.1 | -62.3 | -64.8 | -64.6 | -61.0 | -58.3 | -56.2 | -54.0 | -52.2 | /// | /// |
| 28日 | /// | 4.7 | 2.9 | -0.4 | -3.0 | -7.5 | -13.6 | -21.1 | -30.7 | -35.6 | -40.0 | -44.3 | -50.2 | -54.0 | -58.1 | -62.3 | -64.9 | -64.7 | -61.0 | -58.3 | -56.2 | -54.0 | -52.1 | /// | /// |
| 29日 | /// | 4.7 | 2.9 | -0.5 | -3.0 | -7.5 | -13.6 | -21.1 | -30.7 | -35.6 | -40.0 | -44.3 | -50.1 | -54.0 | -58.1 | -62.3 | -64.9 | -64.7 | -61.0 | -58.3 | -56.2 | -54.0 | -52.1 | /// | /// |
| 30日 | /// | 4.7 | 2.9 | -0.4 | -3.0 | -7.5 | -13.6 | -21.2 | -30.8 | -35.6 | -40.0 | -44.3 | -50.1 | -53.9 | -58.0 | -62.3 | -65.0 | -64.8 | -61.0 | -58.3 | -56.1 | -53.9 | -52.1 | /// | /// |
| 31日 | /// | 4.7 | 2.9 | -0.4 | -3.0 | -7.5 | -13.6 | -21.2 | -30.8 | -35.6 | -40.0 | -44.3 | -50.1 | -53.9 | -58.0 | -62.3 | -65.0 | -64.8 | -61.1 | -58.4 | -56.1 | -53.9 | -52.1 | /// | /// |