日ごとの値
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留萌地方 1981年9月（日ごとの値） 最低気温（℃）
| 日 | 天塩 | 遠別 | 羽幌* | 留萌* | 増毛 | 焼尻 | 初山別 | 達布 | 幌糠 |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 15.3 | 11.0 | 16.4 | 12.2 | 13.5 | 15.6 | 13.7 | 9.1 | 8.3 |
| 2 | 12.8 | 12.2 | 13.6 | 10.8 | 14.3 | 16.4 | 13.7 | 8.8 | 7.4 |
| 3 | 12.6 | 12.0 | 13.1 | 12.9 | 14.2 | 16.5 | 12.9 | 10.3 | 9.6 |
| 4 | 11.5 ] | 10.6 | 13.0 | 12.7 | 12.8 | 12.9 | 11.7 | 11.8 | 12.1 |
| 5 | /// | 10.2 | 12.1 | 12.6 | 12.8 | 12.8 | 10.8 | 10.1 | 8.6 |
| 6 | /// | 9.4 | 10.4 | 10.3 | 12.1 | 14.5 | 10.4 | 8.3 | 7.0 ] |
| 7 | 10.8 ] | 8.1 | 9.0 | 8.6 | 11.0 | 14.7 | 9.6 | 6.7 | 5.3 |
| 8 | 12.4 | 12.8 | 12.7 | 10.9 | 12.0 | 16.2 | 12.2 | 8.6 | 6.6 |
| 9 | 14.9 | 13.6 | 15.6 | 15.4 | 15.1 | 16.0 | 14.9 | 13.1 | 13.6 |
| 10 | 14.5 | 14.6 | 14.6 | 14.9 | 14.9 | 15.0 | 15.2 | 14.1 | 9.2 |
| 11 | 7.5 | 7.5 | 9.1 | 9.2 | 10.2 | 13.3 | 9.9 | 6.5 | 5.2 |
| 12 | 6.0 | 6.0 | 6.9 | 7.2 | 9.4 | 13.2 | 6.8 | 4.5 | 3.3 |
| 13 | 10.3 | 9.8 | 11.8 | 11.7 | 13.0 | 13.5 | 9.1 | 8.4 | 9.4 |
| 14 | 10.5 | 11.4 ] | 11.0 | 10.8 | 10.2 | 10.8 ] | 9.0 ] | 10.1 | 9.0 |
| 15 | 7.8 | /// | 11.5 | 11.7 | 12.4 | 12.9 | 10.3 | 9.5 | 8.3 |
| 16 | 14.8 | 16.0 ] | 11.1 | 10.3 | 12.1 | 14.5 | 10.9 | 9.0 | 6.3 |
| 17 | 17.0 | 14.5 | 12.5 | 9.2 | 11.8 | 16.7 | 12.5 | 6.5 | 5.2 |
| 18 | 12.9 | 13.7 | 11.1 | 10.9 | 9.6 | 15.8 | 11.8 | 7.4 | 6.4 |
| 19 | 10.5 | 11.4 | 14.1 | 15.0 | 16.3 | 14.6 | 13.9 | 15.0 | 13.5 |
| 20 | 7.1 | 9.5 | 10.8 | 12.5 | 12.7 | 14.2 ] | 10.4 | 10.9 | 9.6 |
| 21 | 7.0 | 8.7 | 10.7 | 11.8 | 11.9 | 15.7 | 9.9 | 9.9 | 8.7 |
| 22 | 11.3 | 10.4 | 12.9 | 12.2 | 12.3 | 15.7 | 11.5 | 9.7 | 8.2 |
| 23 | 15.6 | 15.4 | 12.8 | 12.5 | 14.2 ] | 15.6 | 14.2 | 10.5 ] | 10.4 |
| 24 | 13.8 | 13.5 | 12.2 | 10.6 | 12.1 | 15.5 ] | 14.0 | 9.4 | 10.1 |
| 25 | 11.0 | 10.2 | 12.2 | 12.8 | 13.6 | 15.3 | 11.1 | 11.3 | 10.7 |
| 26 | 8.1 | 10.2 | 9.9 | 12.1 | 13.1 | 14.7 | 10.1 | 10.5 | 11.1 |
| 27 | 9.9 ] | 10.5 ] | 12.1 | 12.9 | 14.8 ] | 15.6 | 11.8 | 9.2 ] | 8.0 |
| 28 | 7.0 | 6.9 | 8.7 | 8.7 | 7.8 | 7.9 | 8.8 | 7.3 | 7.3 |
| 29 | 8.4 | 7.5 | 8.3 | 9.1 | 9.8 | 7.6 | 8.6 | 6.8 | 4.9 |
| 30 | 11.4 | 4.8 | 11.0 | 7.4 | 10.4 | 13.0 | 10.2 | 7.1 | 2.7 |
- 値欄の記号の説明
- アスタリスク(*)が付いた地点は地上気象観測地点(気象台・測候所・特別地域気象観測所等)です。
- アスタリスクの付いていない地点はアメダス地点です。2021年3月2日より、アメダスの日照時間は「推計気象分布（日照時間）」から得る推計値となりましたので、日照計による観測値と単純比較できません。詳しくは要素ごとの値の補足説明をご覧ください。