平年値（旬ごとの値）
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納沙布（根室地方) 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 | 6.1 | -2.2 | 0.2 | -5.0 | 5.7 | 47.3 | /// | /// |
| 中旬 | 6.2 | -3.3 | -1.1 | -6.2 | 5.5 | 49.0 | /// | /// | |
| 下旬 | 6.6 | -3.5 | -1.1 | -6.5 | 5.5 | 53.9 | /// | /// | |
| 2月 | 上旬 | 3.7 | -4.0 | -1.6 | -6.9 | 5.5 | 57.1 | /// | /// |
| 中旬 | 5.9 | -3.8 | -1.3 | -6.7 | 5.2 | 59.7 | /// | /// | |
| 下旬 | 5.1 | -3.1 | -0.5 | -6.3 | 4.7 | 53.1 | /// | /// | |
| 3月 | 上旬 | 11.5 | -2.3 | 0.3 | -5.3 | 5.1 | 63.6 | /// | /// |
| 中旬 | 10.7 | -0.9 | 1.8 | -3.9 | 4.9 | 65.4 | /// | /// | |
| 下旬 | 15.2 | 0.1 | 3.1 | -2.8 | 4.8 | 73.2 | /// | /// | |
| 4月 | 上旬 | 17.1 | 1.5 | 4.9 | -1.3 | 4.7 | 62.8 | /// | /// |
| 中旬 | 14.7 | 2.8 | 6.5 | -0.2 | 4.8 | 62.7 | /// | /// | |
| 下旬 | 21.9 | 4.5 | 8.7 | 1.3 | 4.9 | 64.7 | /// | /// | |
| 5月 | 上旬 | 27.5 | 5.7 | 9.8 | 2.7 | 4.8 | 57.9 | /// | /// |
| 中旬 | 27.0 | 6.6 | 10.7 | 3.6 | 4.7 | 58.2 | /// | /// | |
| 下旬 | 28.2 | 7.9 | 11.9 | 4.9 | 4.5 | 54.6 | /// | /// | |
| 6月 | 上旬 | 28.3 | 9.0 | 12.8 | 6.1 | 4.2 | 51.1 | /// | /// |
| 中旬 | 39.3 | 10.1 | 13.7 | 7.5 | 4.1 | 37.5 | /// | /// | |
| 下旬 | 26.0 | 11.2 | 15.0 | 8.4 | 4.0 | 45.6 | /// | /// | |
| 7月 | 上旬 | 32.2 | 12.7 | 16.5 | 10.0 | 3.7 | 42.9 | /// | /// |
| 中旬 | 38.4 | 13.8 | 17.5 | 11.1 | 3.7 | 38.0 | /// | /// | |
| 下旬 | 36.2 | 15.4 | 19.2 | 12.7 | 3.6 | 37.3 | /// | /// | |
| 8月 | 上旬 | 31.1 | 16.4 | 20.3 | 13.7 | 3.6 | 42.5 | /// | /// |
| 中旬 | 40.1 | 16.8 | 20.2 | 14.3 | 4.0 | 37.8 | /// | /// | |
| 下旬 | 45.0 | 17.1 | 20.6 | 14.5 | 4.0 | 49.8 | /// | /// | |
| 9月 | 上旬 | 35.3 | 17.1 | 20.5 | 14.6 | 4.2 | 46.1 | /// | /// |
| 中旬 | 55.7 | 16.3 | 19.8 | 13.4 | 4.3 | 51.7 | /// | /// | |
| 下旬 | 39.6 | 14.7 | 17.9 | 11.7 | 4.7 | 55.4 | /// | /// | |
| 10月 | 上旬 | 42.2 | 13.5 | 16.7 | 10.4 | 4.8 | 54.2 | /// | /// |
| 中旬 | 26.2 | 11.7 | 15.0 | 8.4 | 4.8 | 57.2 | /// | /// | |
| 下旬 | 32.5 | 10.0 | 13.1 | 6.8 | 5.0 | 57.5 | /// | /// | |
| 11月 | 上旬 | 22.7 | 8.1 | 11.3 | 4.7 | 5.1 | 50.5 | /// | /// |
| 中旬 | 28.1 | 5.7 | 8.7 | 2.4 | 5.2 | 46.9 | /// | /// | |
| 下旬 | 24.4 | 3.5 | 6.6 | 0.2 | 5.4 | 49.4 | /// | /// | |
| 12月 | 上旬 | 19.9 | 1.3 | 4.0 | -1.9 | 5.5 | 46.6 | /// | /// |
| 中旬 | 14.6 | -0.4 | 2.2 | -3.6 | 5.5 | 48.0 | /// | /// | |
| 下旬 | 14.8 | -1.4 | 1.0 | -4.4 | 5.6 | 50.4 | /// | /// | |