| 02:35 CST |  Clear | -2°C / 28°F | -5°C / 23°F | 80% | 1018 mb (30.06 in) | Calm | - | 10SM |
| | KHYI 260835Z AUTO 00000KT 10SM CLR M02/M05 A3005 RMK AO1 |
| 02:15 CST |  Clear | -1°C / 30°F | -5°C / 23°F | 75% | 1017 mb (30.03 in) | NE 6 kph (NE 3.5 mph) | - | 10SM |
| | KHYI 260815Z AUTO 05003KT 10SM CLR M01/M05 A3004 RMK AO1 |
| 01:55 CST |  Clear | -1°C / 30°F | -4°C / 25°F | 80% | 1017 mb (30.03 in) | NE 6 kph (NE 3.5 mph) | - | 10SM |
| | KHYI 260755Z AUTO 04003KT 10SM CLR M01/M04 A3004 RMK AO1 |
| 01:35 CST |  Clear | -1°C / 30°F | -4°C / 25°F | 80% | 1018 mb (30.06 in) | Calm | - | 10SM |
| | KHYI 260735Z AUTO 00000KT 10SM CLR M01/M04 A3005 RMK AO1 |
| 01:15 CST |  Clear | -1°C / 30°F | -4°C / 25°F | 80% | 1018 mb (30.06 in) | Calm | - | 10SM |
| | KHYI 260715Z AUTO 00000KT 10SM CLR M01/M04 A3006 RMK AO1 |
| 00:55 CST |  Clear | -1°C / 30°F | -4°C / 25°F | 80% | 1018 mb (30.06 in) | Calm | - | 10SM |
| | KHYI 260655Z AUTO 00000KT 10SM CLR M01/M04 A3006 RMK AO1 |
| 00:35 CST |  Clear | -1°C / 30°F | -3°C / 27°F | 86% | 1018 mb (30.06 in) | Calm | - | 10SM |
| | KHYI 260635Z AUTO 00000KT 10SM CLR M01/M03 A3005 RMK AO1 |
| 00:15 CST |  Clear | -1°C / 30°F | -4°C / 25°F | 80% | 1018 mb (30.06 in) | Calm | - | 10SM |
| | KHYI 260615Z AUTO 00000KT 10SM CLR M01/M04 A3006 RMK AO1 |