| 05:55 CST |  Clear | -16°C / 3°F | -18°C / 0°F | 85% | 1020 mb (30.12 in) | S 6 kph (S 3.5 mph) | - | 10SM |
| | KHYS 111155Z AUTO 19003KT 10SM CLR M16/M18 A3011 RMK AO1 11120 21170 54000 |
| 05:35 CST |  Clear | -16°C / 3°F | -17°C / 1°F | 92% | 1019 mb (30.09 in) | S 13 kph (S 8.1 mph) | - | 10SM |
| | KHYS 111135Z AUTO 19007KT 10SM CLR M16/M17 A3010 RMK AO1 |
| 05:15 CST |  Clear | -17°C / 1°F | -20°C / -4°F | 78% | 1020 mb (30.12 in) | Calm | - | 10SM |
| | KHYS 111115Z AUTO 00000KT 10SM CLR M17/M20 A3011 RMK AO1 |
| 04:55 CST |  Clear | -16°C / 3°F | -22°C / -8°F | 60% | 1020 mb (30.12 in) | Calm | - | 10SM |
| | KHYS 111055Z AUTO 00000KT 10SM CLR M16/M22 A3011 RMK AO1 |
| 04:35 CST |  Clear | -13°C / 9°F | -16°C / 3°F | 78% | 1020 mb (30.12 in) | SSW 6 kph (SSW 3.5 mph) | - | 10SM |
| | KHYS 111035Z AUTO 25003KT 10SM CLR M13/M16 A3011 RMK AO1 |
| 04:15 CST |  Clear | -14°C / 7°F | -16°C / 3°F | 85% | 1019 mb (30.09 in) | SSW 7 kph (SSW 4.6 mph) | - | 10SM |
| | KHYS 111015Z AUTO 24004KT 10SM CLR M14/M16 A3010 RMK AO1 |
| 03:55 CST |  Clear | -14°C / 7°F | -16°C / 3°F | 85% | 1020 mb (30.12 in) | SW 7 kph (SW 4.6 mph) | - | 10SM |
| | KHYS 110955Z AUTO 21004KT 10SM CLR M14/M16 A3011 RMK AO1 |
| 03:35 CST |  Clear | -14°C / 7°F | -18°C / 0°F | 72% | 1020 mb (30.12 in) | S 7 kph (S 4.6 mph) | - | 10SM |
| | KHYS 110935Z AUTO 19004KT 10SM CLR M14/M18 A3011 RMK AO1 |
| 03:15 CST |  Clear | -16°C / 3°F | -18°C / 0°F | 85% | 1020 mb (30.12 in) | SSE 6 kph (SSE 3.5 mph) | - | 10SM |
| | KHYS 110915Z AUTO 20003KT 10SM CLR M16/M18 A3012 RMK AO1 |
| 02:55 CST |  Clear | -17°C / 1°F | -21°C / -6°F | 71% | 1020 mb (30.12 in) | SSE 17 kph (SSE 10.4 mph) | - | 10SM |
| | KHYS 110855Z AUTO 20009KT 10SM CLR M17/M21 A3011 RMK AO1 57010 |
| 02:35 CST |  Clear | -13°C / 9°F | -17°C / 1°F | 72% | 1020 mb (30.12 in) | SW 7 kph (SW 4.6 mph) | - | 10SM |
| | KHYS 110835Z AUTO 22004KT 10SM CLR M13/M17 A3013 RMK AO1 |
| 02:15 CST |  Clear | -13°C / 9°F | -17°C / 1°F | 72% | 1021 mb (30.15 in) | Calm | - | 10SM |
| | KHYS 110815Z AUTO 00000KT 10SM CLR M13/M17 A3014 RMK AO1 |
| 01:55 CST |  Clear | -13°C / 9°F | -16°C / 3°F | 78% | 1020 mb (30.12 in) | Calm | - | 10SM |
| | KHYS 110755Z AUTO 00000KT 10SM CLR M13/M16 A3013 RMK AO1 |
| 01:35 CST |  Clear | -13°C / 9°F | -16°C / 3°F | 78% | 1020 mb (30.12 in) | SSW 6 kph (SSW 3.5 mph) | - | 10SM |
| | KHYS 110735Z AUTO 25003KT 10SM CLR M13/M16 A3013 RMK AO1 |
| 01:15 CST |  Clear | -13°C / 9°F | -17°C / 1°F | 72% | 1021 mb (30.15 in) | SSW 7 kph (SSW 4.6 mph) | - | 10SM |
| | KHYS 110715Z AUTO 25004KT 10SM CLR M13/M17 A3014 RMK AO1 |
| 00:55 CST |  Clear | -13°C / 9°F | -17°C / 1°F | 72% | 1021 mb (30.15 in) | SSW 9 kph (SSW 5.8 mph) | - | 10SM |
| | KHYS 110655Z AUTO 25005KT 10SM CLR M13/M17 A3014 RMK AO1 |
| 00:35 CST |  Clear | -12°C / 10°F | -16°C / 3°F | 72% | 1021 mb (30.15 in) | SSW 15 kph (SSW 9.2 mph) | - | 10SM |
| | KHYS 110635Z AUTO 24008KT 10SM CLR M12/M16 A3014 RMK AO1 |
| 00:15 CST |  Clear | -13°C / 9°F | -17°C / 1°F | 72% | 1021 mb (30.15 in) | SW 17 kph (SW 10.4 mph) | - | 10SM |
| | KHYS 110615Z AUTO 23009KT 10SM CLR M13/M17 A3014 RMK AO1 |