平年値（旬ごとの値）
 |
 |  |
 |  |  |  |
岩国（山口県) 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 | 13.7 | 4.6 | 9.6 | 0.5 | 1.6 | 50.4 | /// | /// |
| 中旬 | 18.5 | 4.3 | 9.0 | 0.2 | 1.6 | 50.1 | /// | /// | |
| 下旬 | 22.7 | 3.7 | 8.4 | -0.4 | 1.6 | 54.3 | /// | /// | |
| 2月 | 上旬 | 18.4 | 4.1 | 9.0 | -0.2 | 1.6 | 52.2 | /// | /// |
| 中旬 | 29.6 | 4.9 | 9.9 | 0.4 | 1.6 | 53.1 | /// | /// | |
| 下旬 | 32.9 | 5.9 | 11.0 | 1.3 | 1.6 | 45.0 | /// | /// | |
| 3月 | 上旬 | 42.4 | 6.9 | 11.9 | 2.0 | 1.7 | 55.3 | /// | /// |
| 中旬 | 47.7 | 8.1 | 13.7 | 2.8 | 1.7 | 59.8 | /// | /// | |
| 下旬 | 55.5 | 9.4 | 14.8 | 4.4 | 1.6 | 66.2 | /// | /// | |
| 4月 | 上旬 | 54.6 | 11.7 | 17.2 | 6.3 | 1.7 | 66.7 | /// | /// |
| 中旬 | 60.2 | 13.5 | 19.0 | 8.2 | 1.7 | 68.1 | /// | /// | |
| 下旬 | 58.0 | 15.0 | 20.7 | 9.6 | 1.6 | 69.6 | /// | /// | |
| 5月 | 上旬 | 61.8 | 17.2 | 22.8 | 11.9 | 1.6 | 69.9 | /// | /// |
| 中旬 | 70.0 | 17.9 | 23.3 | 12.7 | 1.5 | 71.3 | /// | /// | |
| 下旬 | 55.8 | 19.3 | 24.8 | 14.2 | 1.5 | 79.6 | /// | /// | |
| 6月 | 上旬 | 49.6 | 20.6 | 25.7 | 16.1 | 1.4 | 60.0 | /// | /// |
| 中旬 | 95.0 | 21.9 | 26.4 | 17.9 | 1.4 | 53.7 | /// | /// | |
| 下旬 | 129.5 | 23.0 | 27.0 | 19.7 | 1.3 | 38.1 | /// | /// | |
| 7月 | 上旬 | 146.3 | 24.6 | 28.8 | 21.3 | 1.4 | 42.4 | /// | /// |
| 中旬 | 84.1 | 26.0 | 30.5 | 22.4 | 1.5 | 55.7 | /// | /// | |
| 下旬 | 61.8 | 27.1 | 32.0 | 23.2 | 1.5 | 78.1 | /// | /// | |
| 8月 | 上旬 | 46.5 | 27.6 | 32.7 | 23.6 | 1.6 | 79.2 | /// | /// |
| 中旬 | 56.1 | 27.0 | 31.9 | 23.3 | 1.4 | 69.1 | /// | /// | |
| 下旬 | 52.4 | 26.2 | 31.1 | 22.3 | 1.4 | 69.5 | /// | /// | |
| 9月 | 上旬 | 64.1 | 24.9 | 29.9 | 21.0 | 1.4 | 57.5 | /// | /// |
| 中旬 | 55.8 | 23.3 | 28.2 | 19.2 | 1.4 | 55.2 | /// | /// | |
| 下旬 | 62.5 | 21.1 | 26.0 | 16.9 | 1.3 | 55.3 | /// | /// | |
| 10月 | 上旬 | 37.4 | 19.4 | 24.6 | 15.0 | 1.4 | 55.1 | /// | /// |
| 中旬 | 33.7 | 17.4 | 23.0 | 12.8 | 1.5 | 60.8 | /// | /// | |
| 下旬 | 42.5 | 15.2 | 20.5 | 10.6 | 1.4 | 63.4 | /// | /// | |
| 11月 | 上旬 | 24.9 | 13.4 | 18.9 | 8.8 | 1.4 | 56.7 | /// | /// |
| 中旬 | 28.8 | 11.4 | 16.7 | 6.9 | 1.5 | 51.8 | /// | /// | |
| 下旬 | 23.6 | 9.6 | 14.9 | 5.1 | 1.5 | 50.5 | /// | /// | |
| 12月 | 上旬 | 27.0 | 7.6 | 12.8 | 3.3 | 1.6 | 51.4 | /// | /// |
| 中旬 | 16.0 | 6.1 | 11.0 | 1.8 | 1.6 | 48.8 | /// | /// | |
| 下旬 | 19.5 | 5.4 | 10.4 | 1.2 | 1.6 | 56.3 | /// | /// | |