| 01:00 | 3.7 | 3.2 | 3.4 | 1.2 |
| 02:00 | 3.6 | 2.8 | 3.2 | 1.6 |
| 03:00 | 3.0 | 2.3 | 3.0 | 1.6 |
| 04:00 | 2.8 | 2.2 | 2.5 | 1.5 |
| 05:00 | 2.4 | 2.2 | 2.7 | 1.1 |
| 06:00 | 3.5 | 2.1 | 2.7 | 0.8 |
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濃霧 (21日16時22分発表)[下諏訪町]
| 役 場 | 諏訪（ アメダス ） | 城 北 小 学 校 | 角 間 新 田 |
|---|
| 01:00 | 3.7 | 3.2 | 3.4 | 1.2 |
| 02:00 | 3.6 | 2.8 | 3.2 | 1.6 |
| 03:00 | 3.0 | 2.3 | 3.0 | 1.6 |
| 04:00 | 2.8 | 2.2 | 2.5 | 1.5 |
| 05:00 | 2.4 | 2.2 | 2.7 | 1.1 |
| 06:00 | 3.5 | 2.1 | 2.7 | 0.8 |
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| 平均値 | 3.2 | 2.5 | 2.9 | 1.3 |
| 最高値 | 3.7 | 3.2 | 3.4 | 1.6 |
| 起時 | 01:00 | 01:00 | 01:00 | 03:00 |
| 最低値 | 2.4 | 2.1 | 2.5 | 0.8 |
| 起時 | 05:00 | 06:00 | 04:00 | 06:00 |
