| 観測時刻 | 気温[℃] | 路温[℃] | 路面状態 |
| 04/20 01:00 | 13.2 | 15.6 | 乾燥 |
| 04/20 02:00 | 13.6 | 16.1 | 乾燥 |
| 04/20 03:00 | 14.2 | 16.9 | 乾燥 |
| 04/20 04:00 | 13.3 | 14.8 | 乾燥 |
| 04/20 05:00 | 13.2 | 14.7 | 乾燥 |
| 04/20 06:00 | 13.3 | 14.9 | 乾燥 |
| 04/20 07:00 | 14.1 | 15.8 | 乾燥 |
| 04/20 08:00 | 15.6 | 17.3 | 乾燥 |
| 04/20 09:00 | 19.7 | 20.6 | 乾燥 |
| 04/20 10:00 | 21.7 | 21.7 | 乾燥 |
| 04/20 11:00 | 19.1 | 19.3 | 乾燥 |
| 04/20 12:00 | 19.9 | 20.4 | 湿潤 |
| 04/20 13:00 | 14.6 | 13.1 | 湿潤 |
| 04/20 14:00 | 13.7 | 15.3 | 湿潤 |
| 04/20 15:00 | 14.0 | 16.2 | 湿潤 |
| 04/20 16:00 | 13.5 | 14.5 | 湿潤 |
| 04/20 17:00 | 13.0 | 14.1 | 湿潤 |
| 04/20 18:00 | 13.2 | 14.5 | 湿潤 |
| 04/20 19:00 | 12.5 | 13.7 | 湿潤 |
| 04/20 20:00 | 13.3 | 14.4 | 湿潤 |
| 04/20 21:00 | 16.4 | 16.3 | 湿潤 |
| 04/20 22:00 | 17.5 | 16.5 | 湿潤 |
| 04/20 23:00 | 17.9 | 17.3 | 湿潤 |
| 04/21 00:00 | 18.2 | 16.9 | 湿潤 |