| 06:42 CST |  Overcast Blowing Snow | -8°C / 18°F | -11°C / 12°F | 79% | 1006 mb (29.71 in) | NNW 50 kph (NNW 31.1 mph) | - | 2 1/2SM |
| | KGRI 261242Z AUTO 33027G34KT 2 1/2SM BLSN SCT021 OVC031 M08/M11 A2970 RMK AO2 PK WND 33034/1240 |
| 05:53 CST |  Overcast Blowing Snow | -8°C / 18°F | -11°C / 12°F | 79% | 1005 mb (29.68 in) | NNW 44 kph (NNW 27.6 mph) | 0.25 mm (0.01 in) | 3SM |
| | KGRI 261153Z AUTO 33024KT 3SM BLSN OVC021 M08/M11 A2968 RMK AO2 PK WND 31032/1142 UPB14E41SNE1057 SLP080 P0001 60007 70024 T10781106 11078 21089 53012 |
| 05:38 CST |  Overcast Unknown Precip | -8°C / 18°F | -11°C / 12°F | 79% | 1005 mb (29.68 in) | NW 44 kph (NW 27.6 mph) | 0.00 mm (0.00 in) | 3SM |
| | KGRI 261138Z AUTO 32024G30KT 3SM UP BKN021 BKN050 OVC095 M08/M11 A2967 RMK AO2 PK WND 31030/1138 UPB14SNE1057 P0000 |
| 05:00 CST |  Overcast Blowing Snow | -8°C / 18°F | -11°C / 12°F | 79% | 1004 mb (29.65 in) | NW 39 kph (NW 24.2 mph) | 0.00 mm (0.00 in) | 3SM |
| | KGRI 261100Z AUTO 31021G30KT 3SM BLSN SCT070 OVC095 M08/M11 A2966 RMK AO2 PK WND 32028/1100 SNE1057 P0000 |
| 04:53 CST |  Overcast Light Snow | -8°C / 18°F | -11°C / 12°F | 79% | 1004 mb (29.65 in) | NW 43 kph (NW 26.5 mph) | 0.25 mm (0.01 in) | 1 3/4SM |
| | KGRI 261053Z AUTO 32023G32KT 1 3/4SM -SN SCT070 OVC095 M08/M11 A2966 RMK AO2 PK WND 32036/1012 SLP072 P0001 T10781106 |
| 04:17 CST |  Overcast Light Snow | -8°C / 18°F | -10°C / 14°F | 86% | 1004 mb (29.65 in) | NW 50 kph (NW 31.1 mph) | 0.00 mm (0.00 in) | 1SM |
| | KGRI 261017Z AUTO 32027G36KT 1SM R35/P6000FT -SN BR SCT012 BKN046 OVC055 M08/M10 A2964 RMK AO2 PK WND 32036/1012 P0000 |
| 04:05 CST |  Overcast Light Snow | -8°C / 18°F | -10°C / 14°F | 86% | 1004 mb (29.65 in) | NNW 50 kph (NNW 31.1 mph) | 0.00 mm (0.00 in) | 3/4SM |
| | KGRI 261005Z AUTO 33027G34KT 3/4SM R35/4500VP6000FT -SN BR BKN012 OVC046 M08/M10 A2964 RMK AO2 PK WND 33034/1004 P0000 |
| 03:53 CST |  Overcast Light Snow | -8°C / 18°F | -10°C / 14°F | 86% | 1004 mb (29.65 in) | NW 44 kph (NW 27.6 mph) | 0.00 mm (0.00 in) | 1 1/2SM |
| | KGRI 260953Z AUTO 32024G30KT 1 1/2SM -SN BR SCT026 OVC046 M08/M10 A2964 RMK AO2 PK WND 32035/0925 SLP067 P0000 T10781100 |
| 03:51 CST |  Overcast Light Snow | -8°C / 18°F | -10°C / 14°F | 86% | 1004 mb (29.65 in) | NNW 44 kph (NNW 27.6 mph) | 0.00 mm (0.00 in) | 1 1/2SM |
| | KGRI 260951Z AUTO 33024G30KT 1 1/2SM -SN BR SCT023 OVC046 M08/M10 A2964 RMK AO2 PK WND 32035/0925 P0000 |
| 03:30 CST |  Overcast Light Snow | -8°C / 18°F | -10°C / 14°F | 86% | 1004 mb (29.65 in) | NW 46 kph (NW 28.8 mph) | 0.00 mm (0.00 in) | 1SM |
| | KGRI 260930Z AUTO 32025G35KT 1SM R35/6000VP6000FT -SN BR BKN015 OVC028 M08/M10 A2964 RMK AO2 PK WND 32035/0925 P0000 |
| 03:28 CST |  Overcast Light Snow | -8°C / 18°F | -10°C / 14°F | 86% | 1004 mb (29.65 in) | NW 43 kph (NW 26.5 mph) | 0.00 mm (0.00 in) | 3/4SM |
| | KGRI 260928Z AUTO 32023G35KT 3/4SM R35/6000VP6000FT -SN BR BKN013 OVC028 M08/M10 A2964 RMK AO2 PK WND 32035/0925 P0000 |
| 03:21 CST |  Overcast Light Snow | -8°C / 18°F | -10°C / 14°F | 86% | 1003 mb (29.62 in) | NW 46 kph (NW 28.8 mph) | 0.00 mm (0.00 in) | 3/4SM |
| | KGRI 260921Z AUTO 32025G35KT 3/4SM R35/6000VP6000FT -SN BR BKN015 OVC028 M08/M10 A2963 RMK AO2 PK WND 33035/0920 P0000 |
| 02:53 CST |  Obscured Light Snow | -8°C / 18°F | -10°C / 14°F | 86% | 1003 mb (29.62 in) | NW 46 kph (NW 28.8 mph) | 0.76 mm (0.03 in) | 3/4SM |
| | KGRI 260853Z AUTO 32025G33KT 3/4SM R35/5000VP6000FT -SN BR VV014 M08/M10 A2962 RMK AO2 PK WND 32037/0808 SLP060 P0003 60005 T10781100 51019 |
| 02:51 CST |  Obscured Light Snow | -8°C / 18°F | -10°C / 14°F | 86% | 1003 mb (29.62 in) | NW 48 kph (NW 29.9 mph) | 0.76 mm (0.03 in) | 3/4SM |
| | KGRI 260851Z AUTO 32026G33KT 3/4SM R35/5000VP6000FT -SN BR VV014 M08/M10 A2962 RMK AO2 PK WND 32037/0808 P0003 |
| 02:23 CST |  Obscured Snow | -8°C / 18°F | -10°C / 14°F | 86% | 1003 mb (29.62 in) | NW 50 kph (NW 31.1 mph) | 0.51 mm (0.02 in) | 1/2SM |
| | KGRI 260823Z AUTO 32027G35KT 1/2SM R35/3500V6000FT SN FZFG VV008 M08/M10 A2961 RMK AO2 PK WND 32037/0808 P0002 |
| 02:07 CST |  Overcast Snow | -8°C / 18°F | -10°C / 14°F | 86% | 1002 mb (29.59 in) | NW 50 kph (NW 31.1 mph) | 0.00 mm (0.00 in) | 1/2SM |
| | KGRI 260807Z AUTO 32027G37KT 1/2SM R35/4000VP6000FT SN FZFG BKN014 OVC033 M08/M10 A2960 RMK AO2 PK WND 32037/0758 P0000 |
| 01:53 CST |  Obscured Light Snow | -8°C / 18°F | -10°C / 14°F | 86% | 1002 mb (29.59 in) | NW 54 kph (NW 33.4 mph) | 0.25 mm (0.01 in) | 3/4SM |
| | KGRI 260753Z AUTO 32029G35KT 3/4SM R35/5000VP6000FT -SN BR VV017 M08/M10 A2959 RMK AO2 PK WND 33042/0738 SNB31 SLP052 P0001 T10831100 |
| 01:13 CST |  Overcast Fog | -8°C / 18°F | -11°C / 12°F | 79% | 1001 mb (29.56 in) | NW 52 kph (NW 32.2 mph) | - | 1/2SM |
| | KGRI 260713Z AUTO 32028G42KT 1/2SM R35/2800V6000FT FZFG BLSN BKN027 OVC070 M08/M11 A2957 RMK AO2 PK WND 32042/0711 |
| 00:53 CST |  Overcast Blowing Snow | -9°C / 16°F | -11°C / 12°F | 86% | 1001 mb (29.56 in) | NW 50 kph (NW 31.1 mph) | 0.25 mm (0.01 in) | 3/4SM |
| | KGRI 260653Z AUTO 32027G37KT 3/4SM R35/3000VP6000FT BLSN BR BKN055 OVC075 M09/M11 A2956 RMK AO2 PK WND 32037/0651 SNE40 SLP042 P0001 T10891106 |
| 00:30 CST |  Overcast Light Snow | -9°C / 16°F | -11°C / 12°F | 86% | 1001 mb (29.56 in) | NW 56 kph (NW 34.5 mph) | 0.25 mm (0.01 in) | 1/2SM |
| | KGRI 260630Z AUTO 32030G37KT 1/2SM R35/2800V4500FT -SN FZFG FEW029 BKN040 OVC060 M09/M11 A2955 RMK AO2 PK WND 33037/0630 P0001 |
| 00:16 CST |  Overcast Light Snow | -9°C / 16°F | -11°C / 12°F | 86% | 1001 mb (29.56 in) | NW 50 kph (NW 31.1 mph) | 0.25 mm (0.01 in) | 1/2SM |
| | KGRI 260616Z AUTO 32027G34KT 1/2SM R35/3000V6000FT -SN FZFG BKN016 BKN029 OVC060 M09/M11 A2955 RMK AO2 PK WND 32037/0601 P0001 |