平年値（旬ごとの値）
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飯島（長野県) 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 | 1991～ 2020 | 1991～ 2020 | 1991～ 2020 | 1991～ 2020 | 1991～ 2020 | 1991～ 2020 | /// | /// | |
| 資料年数 | 30 | 30 | 30 | 30 | 30 | 30 | 0 | 0 | |
| 1月 | 上旬 | 23.2 | -0.4 | 5.0 | -4.7 | 2.5 | 54.2 | /// | /// |
| 中旬 | 23.0 | -0.8 | 4.3 | -4.8 | 2.4 | 52.8 | /// | /// | |
| 下旬 | 28.3 | -1.0 | 4.1 | -5.4 | 2.5 | 58.3 | /// | /// | |
| 2月 | 上旬 | 24.2 | -0.8 | 4.7 | -5.4 | 2.5 | 56.6 | /// | /// |
| 中旬 | 45.2 | 0.1 | 5.9 | -4.7 | 2.5 | 56.9 | /// | /// | |
| 下旬 | 35.1 | 1.6 | 7.5 | -3.3 | 2.7 | 49.4 | /// | /// | |
| 3月 | 上旬 | 53.6 | 2.7 | 8.7 | -1.9 | 2.7 | 54.3 | /// | /// |
| 中旬 | 52.4 | 3.9 | 10.4 | -1.4 | 2.9 | 60.8 | /// | /// | |
| 下旬 | 74.5 | 5.4 | 11.8 | 0.1 | 2.8 | 62.7 | /// | /// | |
| 4月 | 上旬 | 59.2 | 7.9 | 14.7 | 2.1 | 3.0 | 65.4 | /// | /// |
| 中旬 | 65.2 | 10.0 | 16.5 | 4.2 | 2.9 | 63.3 | /// | /// | |
| 下旬 | 56.3 | 11.6 | 18.2 | 5.7 | 2.9 | 67.4 | /// | /// | |
| 5月 | 上旬 | 66.6 | 13.8 | 20.5 | 8.0 | 2.9 | 65.2 | /// | /// |
| 中旬 | 74.9 | 14.6 | 21.3 | 9.0 | 2.7 | 67.2 | /// | /// | |
| 下旬 | 58.7 | 16.2 | 22.8 | 10.7 | 2.5 | 76.5 | /// | /// | |
| 6月 | 上旬 | 36.3 | 17.4 | 23.8 | 12.3 | 2.4 | 63.1 | /// | /// |
| 中旬 | 84.1 | 18.7 | 24.4 | 14.3 | 2.5 | 51.2 | /// | /// | |
| 下旬 | 116.2 | 19.8 | 24.9 | 16.0 | 2.4 | 37.9 | /// | /// | |
| 7月 | 上旬 | 118.7 | 21.2 | 26.3 | 17.5 | 2.5 | 42.3 | /// | /// |
| 中旬 | 94.6 | 22.3 | 27.8 | 18.3 | 2.4 | 49.0 | /// | /// | |
| 下旬 | 53.3 | 23.4 | 29.5 | 19.2 | 2.2 | 68.5 | /// | /// | |
| 8月 | 上旬 | 36.3 | 24.0 | 30.5 | 19.6 | 2.1 | 70.8 | /// | /// |
| 中旬 | 58.2 | 23.5 | 29.6 | 19.4 | 2.2 | 64.4 | /// | /// | |
| 下旬 | 60.8 | 22.5 | 28.6 | 18.4 | 2.2 | 63.8 | /// | /// | |
| 9月 | 上旬 | 59.4 | 21.5 | 27.3 | 17.5 | 2.3 | 56.2 | /// | /// |
| 中旬 | 79.9 | 19.6 | 25.3 | 15.7 | 2.3 | 52.5 | /// | /// | |
| 下旬 | 80.5 | 17.1 | 22.4 | 13.1 | 2.3 | 47.2 | /// | /// | |
| 10月 | 上旬 | 77.5 | 15.6 | 21.0 | 11.6 | 2.4 | 47.9 | /// | /// |
| 中旬 | 57.4 | 13.5 | 19.2 | 9.2 | 2.3 | 52.5 | /// | /// | |
| 下旬 | 57.8 | 11.0 | 16.8 | 6.6 | 2.2 | 60.0 | /// | /// | |
| 11月 | 上旬 | 35.0 | 9.0 | 15.2 | 4.3 | 2.3 | 55.4 | /// | /// |
| 中旬 | 50.7 | 6.9 | 12.6 | 2.5 | 2.3 | 50.6 | /// | /// | |
| 下旬 | 37.9 | 5.2 | 11.1 | 0.8 | 2.4 | 52.7 | /// | /// | |
| 12月 | 上旬 | 31.0 | 3.3 | 8.8 | -0.9 | 2.4 | 50.9 | /// | /// |
| 中旬 | 22.6 | 1.6 | 6.7 | -2.4 | 2.5 | 48.3 | /// | /// | |
| 下旬 | 26.6 | 0.5 | 5.9 | -3.6 | 2.5 | 58.9 | /// | /// | |