平年値（日ごとの値）
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室蘭（胆振地方) 4月 平年値（日ごとの値） 詳細（気温）
| 要素 | 気温 | ||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 平均 (℃) | 最高 (℃) | 最低 (℃) | 1時間毎の気温(℃) | ||||||||||||||||||||||||
| 01時 | 02時 | 03時 | 04時 | 05時 | 06時 | 07時 | 08時 | 09時 | 10時 | 11時 | 12時 | 13時 | 14時 | 15時 | 16時 | 17時 | 18時 | 19時 | 20時 | 21時 | 22時 | 23時 | 24時 | ||||
| 統計期間 | 1991～ 2020 | 1991～ 2020 | 1991～ 2020 | 1991～ 2020 | 1991～ 2020 | 1991～ 2020 | 1991～ 2020 | 1991～ 2020 | 1991～ 2020 | 1991～ 2020 | 1991～ 2020 | 1991～ 2020 | 1991～ 2020 | 1991～ 2020 | 1991～ 2020 | 1991～ 2020 | 1991～ 2020 | 1991～ 2020 | 1991～ 2020 | 1991～ 2020 | 1991～ 2020 | 1991～ 2020 | 1991～ 2020 | 1991～ 2020 | 1991～ 2020 | 1991～ 2020 | 1991～ 2020 |
| 資料年数 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 |
| 1日 | 3.8 | 7.5 | 1.0 | 2.5 | 2.4 | 2.3 | 2.2 | 2.1 | 2.2 | 2.8 | 3.6 | 4.4 | 4.9 | 5.5 | 5.9 | 6.1 | 6.0 | 5.8 | 5.3 | 4.7 | 3.9 | 3.6 | 3.4 | 3.2 | 3.1 | 2.9 | 2.8 |
| 2日 | 4.0 | 7.7 | 1.1 | 2.6 | 2.5 | 2.4 | 2.3 | 2.2 | 2.3 | 2.9 | 3.7 | 4.6 | 5.1 | 5.7 | 6.1 | 6.2 | 6.2 | 6.0 | 5.5 | 4.8 | 4.1 | 3.8 | 3.6 | 3.4 | 3.2 | 3.0 | 2.9 |
| 3日 | 4.1 | 7.8 | 1.3 | 2.8 | 2.7 | 2.6 | 2.5 | 2.4 | 2.5 | 3.1 | 3.9 | 4.7 | 5.2 | 5.8 | 6.3 | 6.4 | 6.4 | 6.1 | 5.6 | 5.0 | 4.3 | 3.9 | 3.7 | 3.5 | 3.4 | 3.2 | 3.1 |
| 4日 | 4.3 | 8.0 | 1.4 | 2.9 | 2.8 | 2.7 | 2.6 | 2.5 | 2.6 | 3.2 | 4.1 | 4.9 | 5.4 | 6.0 | 6.4 | 6.6 | 6.5 | 6.3 | 5.8 | 5.1 | 4.4 | 4.1 | 3.9 | 3.7 | 3.5 | 3.3 | 3.2 |
| 5日 | 4.4 | 8.2 | 1.6 | 3.1 | 3.0 | 2.8 | 2.7 | 2.6 | 2.8 | 3.4 | 4.2 | 5.0 | 5.5 | 6.1 | 6.6 | 6.7 | 6.7 | 6.4 | 5.9 | 5.3 | 4.6 | 4.2 | 4.0 | 3.8 | 3.7 | 3.5 | 3.3 |
| 6日 | 4.6 | 8.3 | 1.7 | 3.2 | 3.1 | 3.0 | 2.9 | 2.8 | 2.9 | 3.5 | 4.4 | 5.1 | 5.7 | 6.3 | 6.7 | 6.9 | 6.8 | 6.6 | 6.1 | 5.4 | 4.7 | 4.4 | 4.1 | 4.0 | 3.8 | 3.6 | 3.5 |
| 7日 | 4.7 | 8.5 | 1.8 | 3.3 | 3.2 | 3.1 | 3.0 | 2.9 | 3.0 | 3.7 | 4.5 | 5.3 | 5.8 | 6.4 | 6.9 | 7.0 | 7.0 | 6.7 | 6.2 | 5.6 | 4.9 | 4.5 | 4.3 | 4.1 | 3.9 | 3.7 | 3.6 |
| 8日 | 4.8 | 8.7 | 1.9 | 3.5 | 3.3 | 3.2 | 3.1 | 3.0 | 3.2 | 3.8 | 4.6 | 5.4 | 6.0 | 6.6 | 7.0 | 7.2 | 7.1 | 6.9 | 6.4 | 5.7 | 5.0 | 4.6 | 4.4 | 4.2 | 4.1 | 3.9 | 3.7 |
| 9日 | 5.0 | 8.8 | 2.0 | 3.6 | 3.5 | 3.4 | 3.3 | 3.1 | 3.3 | 4.0 | 4.8 | 5.5 | 6.1 | 6.7 | 7.2 | 7.3 | 7.3 | 7.0 | 6.5 | 5.9 | 5.2 | 4.8 | 4.6 | 4.4 | 4.2 | 4.0 | 3.9 |
| 10日 | 5.1 | 9.0 | 2.2 | 3.7 | 3.6 | 3.5 | 3.4 | 3.3 | 3.5 | 4.1 | 4.9 | 5.7 | 6.2 | 6.9 | 7.3 | 7.5 | 7.4 | 7.2 | 6.7 | 6.1 | 5.3 | 4.9 | 4.7 | 4.5 | 4.3 | 4.1 | 4.0 |
| 11日 | 5.3 | 9.2 | 2.3 | 3.8 | 3.7 | 3.6 | 3.5 | 3.4 | 3.6 | 4.3 | 5.1 | 5.8 | 6.4 | 7.0 | 7.4 | 7.6 | 7.6 | 7.3 | 6.8 | 6.2 | 5.5 | 5.1 | 4.8 | 4.7 | 4.5 | 4.3 | 4.1 |
| 12日 | 5.4 | 9.3 | 2.4 | 3.9 | 3.8 | 3.7 | 3.6 | 3.5 | 3.7 | 4.4 | 5.2 | 6.0 | 6.5 | 7.2 | 7.6 | 7.7 | 7.7 | 7.5 | 7.0 | 6.4 | 5.7 | 5.2 | 5.0 | 4.8 | 4.6 | 4.4 | 4.2 |
| 13日 | 5.5 | 9.5 | 2.6 | 4.1 | 4.0 | 3.9 | 3.8 | 3.7 | 3.9 | 4.5 | 5.4 | 6.1 | 6.7 | 7.4 | 7.7 | 7.9 | 7.9 | 7.6 | 7.2 | 6.6 | 5.8 | 5.4 | 5.1 | 5.0 | 4.7 | 4.6 | 4.4 |
| 14日 | 5.7 | 9.7 | 2.7 | 4.2 | 4.1 | 4.0 | 3.9 | 3.8 | 4.0 | 4.7 | 5.5 | 6.3 | 6.8 | 7.5 | 7.9 | 8.0 | 8.0 | 7.8 | 7.3 | 6.7 | 6.0 | 5.6 | 5.3 | 5.1 | 4.9 | 4.7 | 4.5 |
| 15日 | 5.9 | 9.9 | 2.8 | 4.3 | 4.2 | 4.1 | 4.1 | 4.0 | 4.2 | 4.8 | 5.7 | 6.4 | 7.0 | 7.7 | 8.0 | 8.2 | 8.2 | 7.9 | 7.5 | 6.9 | 6.2 | 5.7 | 5.5 | 5.3 | 5.1 | 4.9 | 4.7 |
| 16日 | 6.0 | 10.1 | 3.0 | 4.5 | 4.4 | 4.3 | 4.2 | 4.1 | 4.4 | 5.0 | 5.8 | 6.6 | 7.2 | 7.8 | 8.2 | 8.3 | 8.3 | 8.1 | 7.7 | 7.1 | 6.4 | 5.9 | 5.6 | 5.4 | 5.2 | 5.0 | 4.8 |
| 17日 | 6.2 | 10.2 | 3.1 | 4.6 | 4.5 | 4.4 | 4.3 | 4.3 | 4.5 | 5.2 | 6.0 | 6.7 | 7.3 | 8.0 | 8.3 | 8.5 | 8.5 | 8.3 | 7.9 | 7.3 | 6.6 | 6.1 | 5.8 | 5.6 | 5.4 | 5.2 | 5.0 |
| 18日 | 6.3 | 10.4 | 3.3 | 4.8 | 4.7 | 4.6 | 4.5 | 4.4 | 4.7 | 5.3 | 6.2 | 6.9 | 7.5 | 8.2 | 8.5 | 8.7 | 8.7 | 8.4 | 8.1 | 7.5 | 6.7 | 6.2 | 6.0 | 5.8 | 5.5 | 5.3 | 5.1 |
| 19日 | 6.5 | 10.6 | 3.4 | 4.9 | 4.9 | 4.7 | 4.7 | 4.6 | 4.9 | 5.5 | 6.3 | 7.1 | 7.7 | 8.4 | 8.7 | 8.9 | 8.8 | 8.6 | 8.2 | 7.7 | 6.9 | 6.4 | 6.2 | 6.0 | 5.7 | 5.5 | 5.3 |
| 20日 | 6.7 | 10.8 | 3.6 | 5.1 | 5.0 | 4.9 | 4.8 | 4.7 | 5.1 | 5.7 | 6.5 | 7.3 | 7.9 | 8.6 | 8.9 | 9.0 | 9.0 | 8.8 | 8.4 | 7.9 | 7.1 | 6.6 | 6.3 | 6.1 | 5.9 | 5.7 | 5.5 |
| 21日 | 6.9 | 11.0 | 3.8 | 5.3 | 5.2 | 5.0 | 5.0 | 4.9 | 5.2 | 5.8 | 6.7 | 7.4 | 8.1 | 8.7 | 9.0 | 9.2 | 9.2 | 9.0 | 8.6 | 8.1 | 7.3 | 6.8 | 6.5 | 6.3 | 6.1 | 5.8 | 5.6 |
| 22日 | 7.1 | 11.2 | 3.9 | 5.5 | 5.4 | 5.2 | 5.2 | 5.1 | 5.4 | 6.0 | 6.9 | 7.6 | 8.3 | 8.9 | 9.2 | 9.4 | 9.4 | 9.2 | 8.8 | 8.3 | 7.5 | 7.0 | 6.7 | 6.5 | 6.2 | 6.0 | 5.8 |
| 23日 | 7.3 | 11.4 | 4.1 | 5.6 | 5.5 | 5.4 | 5.3 | 5.3 | 5.6 | 6.2 | 7.1 | 7.8 | 8.5 | 9.1 | 9.4 | 9.6 | 9.6 | 9.4 | 9.0 | 8.5 | 7.7 | 7.2 | 6.9 | 6.7 | 6.4 | 6.2 | 6.0 |
| 24日 | 7.5 | 11.6 | 4.3 | 5.8 | 5.7 | 5.6 | 5.5 | 5.4 | 5.8 | 6.4 | 7.3 | 8.0 | 8.7 | 9.3 | 9.7 | 9.8 | 9.8 | 9.6 | 9.2 | 8.7 | 7.9 | 7.4 | 7.1 | 6.9 | 6.6 | 6.3 | 6.2 |
| 25日 | 7.6 | 11.8 | 4.5 | 6.0 | 5.9 | 5.7 | 5.7 | 5.6 | 6.0 | 6.6 | 7.5 | 8.3 | 8.9 | 9.5 | 9.9 | 10.0 | 10.0 | 9.8 | 9.4 | 8.9 | 8.1 | 7.6 | 7.3 | 7.0 | 6.8 | 6.5 | 6.4 |
| 26日 | 7.8 | 12.0 | 4.6 | 6.2 | 6.1 | 5.9 | 5.9 | 5.8 | 6.2 | 6.8 | 7.7 | 8.5 | 9.1 | 9.7 | 10.1 | 10.2 | 10.2 | 10.0 | 9.6 | 9.0 | 8.3 | 7.8 | 7.5 | 7.2 | 6.9 | 6.7 | 6.5 |
| 27日 | 8.0 | 12.2 | 4.8 | 6.4 | 6.3 | 6.1 | 6.0 | 6.0 | 6.4 | 7.0 | 7.9 | 8.6 | 9.3 | 9.9 | 10.3 | 10.4 | 10.4 | 10.2 | 9.8 | 9.2 | 8.5 | 8.0 | 7.6 | 7.4 | 7.1 | 6.9 | 6.7 |
| 28日 | 8.2 | 12.4 | 5.0 | 6.5 | 6.4 | 6.2 | 6.2 | 6.1 | 6.6 | 7.2 | 8.0 | 8.8 | 9.5 | 10.1 | 10.5 | 10.6 | 10.6 | 10.4 | 10.0 | 9.4 | 8.7 | 8.1 | 7.8 | 7.6 | 7.3 | 7.0 | 6.9 |
| 29日 | 8.4 | 12.6 | 5.1 | 6.7 | 6.6 | 6.4 | 6.4 | 6.3 | 6.7 | 7.4 | 8.2 | 9.0 | 9.7 | 10.3 | 10.6 | 10.8 | 10.8 | 10.6 | 10.2 | 9.6 | 8.9 | 8.3 | 8.0 | 7.7 | 7.5 | 7.2 | 7.1 |
| 30日 | 8.5 | 12.8 | 5.3 | 6.9 | 6.8 | 6.6 | 6.5 | 6.5 | 6.9 | 7.6 | 8.4 | 9.2 | 9.9 | 10.4 | 10.8 | 10.9 | 10.9 | 10.7 | 10.3 | 9.8 | 9.0 | 8.5 | 8.1 | 7.9 | 7.6 | 7.4 | 7.2 |
- 「@」の付いた値は、参考値です。平年差や平年比に利用できません。