| 11:15 CST |  Overcast | -9°C / 16°F | -13°C / 9°F | 73% | 1015 mb (29.97 in) | Calm | - | 4SM |
| | KGPZ 051715Z AUTO 00000KT 4SM OVC010 M09/M13 A2996 RMK AO1 |
| 10:55 CST |  Overcast | -10°C / 14°F | -13°C / 9°F | 79% | 1015 mb (29.97 in) | Calm | - | 5SM |
| | KGPZ 051655Z AUTO 00000KT 5SM OVC010 M10/M13 A2996 RMK AO1 |
| 10:35 CST |  Overcast | -12°C / 10°F | -14°C / 7°F | 85% | 1015 mb (29.97 in) | Calm | - | 4SM |
| | KGPZ 051635Z AUTO 00000KT 4SM OVC008 M12/M14 A2996 RMK AO1 |
| 10:15 CST |  Overcast | -12°C / 10°F | -14°C / 7°F | 85% | 1014 mb (29.94 in) | Calm | - | 1 3/4SM |
| | KGPZ 051615Z AUTO 00000KT 1 3/4SM OVC010 M12/M14 A2995 RMK AO1 |
| 09:55 CST |  Overcast | -12°C / 10°F | -15°C / 5°F | 79% | 1014 mb (29.94 in) | Calm | - | 1 1/2SM |
| | KGPZ 051555Z AUTO 00000KT 1 1/2SM OVC010 M12/M15 A2995 RMK AO1 |
| 09:35 CST |  Overcast | -12°C / 10°F | -14°C / 7°F | 85% | 1014 mb (29.94 in) | Calm | - | 1SM |
| | KGPZ 051535Z AUTO 00000KT 1SM OVC010 M12/M14 A2995 RMK AO1 |
| 09:15 CST |  Overcast | -13°C / 9°F | -16°C / 3°F | 78% | 1014 mb (29.94 in) | Calm | - | 1 3/4SM |
| | KGPZ 051515Z AUTO 00000KT 1 3/4SM OVC010 M13/M16 A2995 RMK AO1 |
| 08:55 CST |  Overcast | -13°C / 9°F | -16°C / 3°F | 78% | 1014 mb (29.94 in) | Calm | - | 4SM |
| | KGPZ 051455Z AUTO 00000KT 4SM BKN010 OVC014 M13/M16 A2994 RMK AO1 52014 |
| 08:35 CST |  Overcast | -14°C / 7°F | -18°C / 0°F | 72% | 1014 mb (29.94 in) | Calm | - | 3SM |
| | KGPZ 051435Z AUTO 00000KT 3SM OVC014 M14/M18 A2993 RMK AO1 |
| 08:15 CST |  Overcast | -14°C / 7°F | -17°C / 1°F | 78% | 1014 mb (29.94 in) | Calm | - | 3SM |
| | KGPZ 051415Z AUTO 00000KT 3SM OVC014 M14/M17 A2993 RMK AO1 |
| 07:55 CST |  Overcast | -13°C / 9°F | -16°C / 3°F | 78% | 1013 mb (29.91 in) | Calm | - | 8SM |
| | KGPZ 051355Z AUTO 00000KT 8SM BKN014 OVC018 M13/M16 A2992 RMK AO1 |
| 07:35 CST |  Overcast | -13°C / 9°F | -16°C / 3°F | 78% | 1013 mb (29.91 in) | Calm | - | 5SM |
| | KGPZ 051335Z AUTO 00000KT 5SM OVC014 M13/M16 A2992 RMK AO1 |
| 07:15 CST |  Overcast | -13°C / 9°F | -16°C / 3°F | 78% | 1013 mb (29.91 in) | Calm | - | 2 1/2SM |
| | KGPZ 051315Z AUTO 00000KT 2 1/2SM OVC014 M13/M16 A2992 RMK AO1 |
| 06:55 CST |  Overcast | -13°C / 9°F | -16°C / 3°F | 78% | 1013 mb (29.91 in) | Calm | - | 2 1/2SM |
| | KGPZ 051255Z AUTO 00000KT 2 1/2SM OVC014 M13/M16 A2992 RMK AO1 |
| 06:35 CST |  Overcast | -14°C / 7°F | -16°C / 3°F | 85% | 1013 mb (29.91 in) | Calm | - | 3SM |
| | KGPZ 051235Z AUTO 00000KT 3SM OVC014 M14/M16 A2991 RMK AO1 |
| 06:15 CST |  Overcast | -14°C / 7°F | -17°C / 1°F | 78% | 1013 mb (29.91 in) | Calm | - | 3SM |
| | KGPZ 051215Z AUTO 00000KT 3SM BKN014 OVC020 M14/M17 A2991 RMK AO1 VIS 2 1/2V5 |
| 05:55 CST |  Overcast | -13°C / 9°F | -16°C / 3°F | 78% | 1013 mb (29.91 in) | Calm | - | 4SM |
| | KGPZ 051155Z AUTO 00000KT 4SM OVC019 M13/M16 A2990 RMK AO1 11110 21160 54000 |
| 05:35 CST |  Overcast | -14°C / 7°F | -16°C / 3°F | 85% | 1013 mb (29.91 in) | Calm | - | 10SM |
| | KGPZ 051135Z AUTO 00000KT 10SM OVC019 M14/M16 A2990 RMK AO1 |
| 05:15 CST |  Overcast | -14°C / 7°F | -17°C / 1°F | 78% | 1013 mb (29.91 in) | Calm | - | 10SM |
| | KGPZ 051115Z AUTO 00000KT 10SM OVC019 M14/M17 A2990 RMK AO1 |
| 04:55 CST |  Overcast | -14°C / 7°F | -17°C / 1°F | 78% | 1013 mb (29.91 in) | Calm | - | 10SM |
| | KGPZ 051055Z AUTO 00000KT 10SM OVC019 M14/M17 A2990 RMK AO1 |
| 04:35 CST |  Overcast | -15°C / 5°F | -17°C / 1°F | 85% | 1012 mb (29.88 in) | Calm | - | 10SM |
| | KGPZ 051035Z AUTO 00000KT 10SM OVC019 M15/M17 A2989 RMK AO1 |
| 04:15 CST |  Overcast | -16°C / 3°F | -18°C / 0°F | 85% | 1012 mb (29.88 in) | Calm | - | 10SM |
| | KGPZ 051015Z AUTO 00000KT 10SM OVC019 M16/M18 A2989 RMK AO1 |
| 03:55 CST |  Overcast | -15°C / 5°F | -18°C / 0°F | 78% | 1012 mb (29.88 in) | Calm | - | 10SM |
| | KGPZ 050955Z AUTO 00000KT 10SM SCT015 OVC022 M15/M18 A2989 RMK AO1 |
| 03:35 CST |  Mostly Cloudy | -15°C / 5°F | -17°C / 1°F | 85% | 1012 mb (29.88 in) | Calm | - | 10SM |
| | KGPZ 050935Z AUTO 00000KT 10SM BKN022 M15/M17 A2989 RMK AO1 |
| 03:15 CST |  Partly Cloudy | -15°C / 5°F | -19°C / -2°F | 72% | 1012 mb (29.88 in) | Calm | - | 10SM |
| | KGPZ 050915Z AUTO 00000KT 10SM SCT022 M15/M19 A2989 RMK AO1 |
| 02:55 CST |  Partly Cloudy | -13°C / 9°F | -15°C / 5°F | 85% | 1013 mb (29.91 in) | W 6 kph (W 3.5 mph) | - | 10SM |
| | KGPZ 050855Z AUTO 27003KT 10SM FEW070 M13/M15 A2990 RMK AO1 52007 |
| 02:35 CST |  Mostly Cloudy | -13°C / 9°F | -16°C / 3°F | 78% | 1012 mb (29.88 in) | W 6 kph (W 3.5 mph) | - | 10SM |
| | KGPZ 050835Z AUTO 28003KT 10SM FEW025 BKN080 M13/M16 A2989 RMK AO1 |
| 02:15 CST |  Overcast | -12°C / 10°F | -15°C / 5°F | 79% | 1012 mb (29.88 in) | Calm | - | 10SM |
| | KGPZ 050815Z AUTO 00000KT 10SM SCT060 OVC080 M12/M15 A2989 RMK AO1 |
| 01:55 CST |  Mostly Cloudy | -12°C / 10°F | -15°C / 5°F | 79% | 1012 mb (29.88 in) | Calm | - | 10SM |
| | KGPZ 050755Z AUTO 00000KT 10SM SCT011 BKN070 M12/M15 A2989 RMK AO1 |
| 01:35 CST |  Overcast | -12°C / 10°F | -14°C / 7°F | 85% | 1012 mb (29.88 in) | Calm | - | 2SM |
| | KGPZ 050735Z AUTO 00000KT 2SM OVC013 M12/M14 A2988 RMK AO1 |
| 01:15 CST |  Overcast | -11°C / 12°F | -14°C / 7°F | 79% | 1012 mb (29.88 in) | NW 6 kph (NW 3.5 mph) | - | 2 1/2SM |
| | KGPZ 050715Z AUTO 30003KT 2 1/2SM OVC014 M11/M14 A2988 RMK AO1 |
| 00:55 CST |  Overcast | -11°C / 12°F | -14°C / 7°F | 79% | 1012 mb (29.88 in) | NW 7 kph (NW 4.6 mph) | - | 2 1/2SM |
| | KGPZ 050655Z AUTO 30004KT 2 1/2SM BKN014 OVC024 M11/M14 A2988 RMK AO1 |
| 00:35 CST |  Overcast | -11°C / 12°F | -14°C / 7°F | 79% | 1012 mb (29.88 in) | NW 6 kph (NW 3.5 mph) | - | 2 1/2SM |
| | KGPZ 050635Z AUTO 30003KT 2 1/2SM FEW014 OVC024 M11/M14 A2988 RMK AO1 |
| 00:15 CST |  Overcast | -11°C / 12°F | -14°C / 7°F | 79% | 1012 mb (29.88 in) | WNW 7 kph (WNW 4.6 mph) | - | 5SM |
| | KGPZ 050615Z AUTO 29004KT 5SM OVC024 M11/M14 A2988 RMK AO1 |