平年値（旬ごとの値）
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大島北ノ山（東京都) 平年値（旬ごとの値）
| 要素 | 降水量 (mm) | 平均気温 (℃) | 日最高気温 (℃) | 日最低気温 (℃) | 平均風速 (m/s) | 日照時間 (h) | 降雪の深さ合計 (cm) | 最深積雪 (cm) | |
|---|---|---|---|---|---|---|---|---|---|
| 統計期間 | 2003～ 2020 | 2003～ 2020 | 2003～ 2020 | 2003～ 2020 | 2003～ 2020 | /// | /// | /// | |
| 資料年数 | 18 | 18 | 18 | 18 | 18 | 0 | 0 | 0 | |
| 1月 | 上旬 | 22.3 | 8.4 | 11.4 | 4.8 | 4.8 | /// | /// | /// |
| 中旬 | 25.6 | 7.8 | 10.7 | 4.4 | 5.1 | /// | /// | /// | |
| 下旬 | 41.7 | 7.8 | 10.7 | 4.4 | 5.3 | /// | /// | /// | |
| 2月 | 上旬 | 27.3 | 7.8 | 10.9 | 4.5 | 5.2 | /// | /// | /// |
| 中旬 | 35.8 | 8.3 | 11.4 | 5.0 | 5.6 | /// | /// | /// | |
| 下旬 | 42.3 | 9.3 | 12.4 | 6.0 | 5.9 | /// | /// | /// | |
| 3月 | 上旬 | 73.9 | 9.9 | 13.0 | 6.8 | 6.2 | /// | /// | /// |
| 中旬 | 33.6 | 11.2 | 14.5 | 7.5 | 5.9 | /// | /// | /// | |
| 下旬 | 53.4 | 11.8 | 15.1 | 8.1 | 5.9 | /// | /// | /// | |
| 4月 | 上旬 | 64.8 | 13.4 | 16.9 | 9.8 | 6.1 | /// | /// | /// |
| 中旬 | 68.3 | 14.7 | 18.0 | 11.2 | 6.2 | /// | /// | /// | |
| 下旬 | 47.3 | 16.1 | 19.5 | 12.6 | 5.4 | /// | /// | /// | |
| 5月 | 上旬 | 59.0 | 17.9 | 21.2 | 14.4 | 5.6 | /// | /// | /// |
| 中旬 | 58.8 | 18.4 | 21.6 | 15.2 | 5.4 | /// | /// | /// | |
| 下旬 | 69.4 | 19.5 | 22.8 | 16.6 | 5.3 | /// | /// | /// | |
| 6月 | 上旬 | 78.7 | 20.2 | 23.3 | 17.4 | 4.5 | /// | /// | /// |
| 中旬 | 78.1 | 21.4 | 24.3 | 19.1 | 5.4 | /// | /// | /// | |
| 下旬 | 88.1 | 22.7 | 25.4 | 20.5 | 5.1 | /// | /// | /// | |
| 7月 | 上旬 | 81.0 | 23.7 | 26.4 | 21.6 | 5.7 | /// | /// | /// |
| 中旬 | 68.6 | 25.2 | 28.1 | 22.9 | 5.5 | /// | /// | /// | |
| 下旬 | 49.5 | 25.6 | 28.7 | 23.3 | 4.8 | /// | /// | /// | |
| 8月 | 上旬 | 33.4 | 27.0 | 30.0 | 24.6 | 5.1 | /// | /// | /// |
| 中旬 | 45.9 | 26.8 | 29.8 | 24.5 | 5.2 | /// | /// | /// | |
| 下旬 | 80.9 | 26.0 | 28.9 | 23.7 | 5.4 | /// | /// | /// | |
| 9月 | 上旬 | 83.0 | 25.4 | 28.4 | 23.0 | 5.2 | /// | /// | /// |
| 中旬 | 69.6 | 24.2 | 27.0 | 21.8 | 5.1 | /// | /// | /// | |
| 下旬 | 78.7 | 22.1 | 24.8 | 19.8 | 6.2 | /// | /// | /// | |
| 10月 | 上旬 | 114.7 | 21.0 | 23.6 | 18.6 | 6.1 | /// | /// | /// |
| 中旬 | 100.5 | 19.4 | 22.0 | 17.1 | 6.4 | /// | /// | /// | |
| 下旬 | 92.7 | 18.0 | 20.7 | 15.3 | 5.8 | /// | /// | /// | |
| 11月 | 上旬 | 44.6 | 17.0 | 19.8 | 14.1 | 4.9 | /// | /// | /// |
| 中旬 | 59.2 | 15.1 | 17.8 | 12.2 | 5.6 | /// | /// | /// | |
| 下旬 | 60.8 | 13.6 | 16.3 | 10.5 | 5.5 | /// | /// | /// | |
| 12月 | 上旬 | 28.8 | 12.0 | 14.8 | 8.9 | 5.3 | /// | /// | /// |
| 中旬 | 32.2 | 10.5 | 13.3 | 7.2 | 5.3 | /// | /// | /// | |
| 下旬 | 34.8 | 9.6 | 12.5 | 6.1 | 5.1 | /// | /// | /// | |