平年値（旬ごとの値）
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小山（栃木県) 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 | 7.5 | 3.1 | 9.8 | -2.9 | 1.5 | 68.4 | /// | /// |
| 中旬 | 12.0 | 2.7 | 9.0 | -3.0 | 1.4 | 66.5 | /// | /// | |
| 下旬 | 16.5 | 2.9 | 9.2 | -2.8 | 1.6 | 73.1 | /// | /// | |
| 2月 | 上旬 | 8.4 | 3.1 | 9.5 | -2.7 | 1.6 | 70.1 | /// | /// |
| 中旬 | 18.2 | 3.9 | 10.2 | -1.9 | 1.6 | 66.2 | /// | /// | |
| 下旬 | 12.5 | 5.2 | 11.4 | -0.5 | 1.7 | 54.3 | /// | /// | |
| 3月 | 上旬 | 28.1 | 6.2 | 12.3 | 0.7 | 1.7 | 60.0 | /// | /// |
| 中旬 | 16.7 | 7.8 | 14.2 | 1.6 | 1.8 | 67.1 | /// | /// | |
| 下旬 | 35.6 | 9.0 | 15.2 | 3.1 | 1.8 | 69.1 | /// | /// | |
| 4月 | 上旬 | 38.0 | 11.2 | 17.6 | 5.2 | 1.9 | 64.0 | /// | /// |
| 中旬 | 31.7 | 13.1 | 19.5 | 7.4 | 1.9 | 58.6 | /// | /// | |
| 下旬 | 32.6 | 14.9 | 21.2 | 9.1 | 1.8 | 63.4 | /// | /// | |
| 5月 | 上旬 | 33.9 | 16.7 | 22.7 | 11.3 | 1.7 | 58.8 | /// | /// |
| 中旬 | 43.8 | 17.7 | 23.3 | 12.7 | 1.7 | 57.1 | /// | /// | |
| 下旬 | 52.9 | 19.4 | 25.2 | 14.6 | 1.7 | 65.2 | /// | /// | |
| 6月 | 上旬 | 34.8 | 20.4 | 25.7 | 15.8 | 1.6 | 54.7 | /// | /// |
| 中旬 | 52.1 | 21.5 | 26.3 | 17.7 | 1.6 | 41.4 | /// | /// | |
| 下旬 | 48.2 | 22.6 | 27.0 | 19.0 | 1.5 | 31.6 | /// | /// | |
| 7月 | 上旬 | 64.3 | 24.1 | 28.9 | 20.4 | 1.5 | 39.4 | /// | /// |
| 中旬 | 56.9 | 25.2 | 30.2 | 21.5 | 1.4 | 43.7 | /// | /// | |
| 下旬 | 49.1 | 26.2 | 31.3 | 22.4 | 1.5 | 55.0 | /// | /// | |
| 8月 | 上旬 | 31.4 | 27.0 | 32.4 | 23.0 | 1.5 | 59.1 | /// | /// |
| 中旬 | 46.7 | 26.4 | 31.6 | 22.7 | 1.5 | 51.1 | /// | /// | |
| 下旬 | 60.3 | 25.6 | 30.7 | 22.0 | 1.4 | 52.6 | /// | /// | |
| 9月 | 上旬 | 60.3 | 24.7 | 29.6 | 21.1 | 1.4 | 44.8 | /// | /// |
| 中旬 | 63.1 | 22.9 | 27.7 | 19.1 | 1.4 | 42.1 | /// | /// | |
| 下旬 | 55.0 | 20.2 | 25.0 | 16.3 | 1.4 | 40.4 | /// | /// | |
| 10月 | 上旬 | 66.3 | 18.9 | 23.7 | 15.1 | 1.3 | 40.0 | /// | /// |
| 中旬 | 47.3 | 16.9 | 22.0 | 12.7 | 1.2 | 44.7 | /// | /// | |
| 下旬 | 48.2 | 14.7 | 20.0 | 9.9 | 1.2 | 55.9 | /// | /// | |
| 11月 | 上旬 | 17.1 | 12.6 | 18.3 | 7.5 | 1.1 | 53.7 | /// | /// |
| 中旬 | 23.4 | 10.4 | 16.2 | 5.3 | 1.1 | 52.3 | /// | /// | |
| 下旬 | 21.4 | 8.7 | 14.7 | 3.4 | 1.2 | 54.4 | /// | /// | |
| 12月 | 上旬 | 14.5 | 6.7 | 12.7 | 1.4 | 1.2 | 55.5 | /// | /// |
| 中旬 | 9.2 | 5.0 | 11.4 | -0.6 | 1.4 | 63.3 | /// | /// | |
| 下旬 | 16.1 | 3.9 | 10.4 | -1.8 | 1.5 | 72.4 | /// | /// | |