| 22:53 CST |  Clear | -8°C / 18°F | -12°C / 10°F | 73% | 1023 mb (30.21 in) | NNW 7 kph (NNW 4.6 mph) | - | 10SM |
| | KGRB 220453Z AUTO 33004KT 10SM CLR M08/M12 A3020 RMK AO2 SLP238 T10831117 |
| 21:53 CST |  Clear | -7°C / 19°F | -11°C / 12°F | 73% | 1022 mb (30.18 in) | NNW 13 kph (NNW 8.1 mph) | - | 10SM |
| | KGRB 220353Z 33007KT 10SM CLR M07/M11 A3017 RMK AO2 SLP230 T10671111 |
| 20:53 CST |  Overcast | -5°C / 23°F | -9°C / 16°F | 74% | 1022 mb (30.18 in) | NW 15 kph (NW 9.2 mph) | - | 10SM |
| | KGRB 220253Z 31008KT 10SM OVC041 M05/M09 A3017 RMK AO2 SLP228 T10501094 51010 |
| 19:53 CST |  Overcast | -4°C / 25°F | -9°C / 16°F | 69% | 1021 mb (30.15 in) | W 13 kph (W 8.1 mph) | - | 10SM |
| | KGRB 220153Z 28007KT 10SM OVC037 M04/M09 A3016 RMK AO2 SLP226 T10441094 |
| 18:53 CST |  Overcast | -4°C / 25°F | -9°C / 16°F | 69% | 1021 mb (30.15 in) | W 6 kph (W 3.5 mph) | - | 9SM |
| | KGRB 220053Z 28003KT 9SM OVC031 M04/M09 A3015 RMK AO2 SLP224 T10441089 |
| 18:40 CST |  Overcast | -4°C / 25°F | -9°C / 16°F | 69% | 1021 mb (30.15 in) | NW 7 kph (NW 4.6 mph) | - | 9SM |
| | KGRB 220040Z 30004KT 9SM OVC031 M04/M09 A3015 RMK AO2 |
| 17:53 CST |  Overcast | -4°C / 25°F | -8°C / 18°F | 74% | 1021 mb (30.15 in) | NW 7 kph (NW 4.6 mph) | - | 9SM |
| | KGRB 212353Z 31004KT 9SM OVC027 M04/M08 A3014 RMK AO2 SLP218 T10391083 11039 21044 51019 |
| 16:53 CST |  Overcast | -4°C / 25°F | -8°C / 18°F | 74% | 1020 mb (30.12 in) | NW 7 kph (NW 4.6 mph) | - | 8SM |
| | KGRB 212253Z 30004KT 8SM OVC025 M04/M08 A3013 RMK AO2 SLP215 T10391078 |
| 15:53 CST |  Overcast Hazy | -4°C / 25°F | -7°C / 19°F | 80% | 1020 mb (30.12 in) | W 9 kph (W 5.8 mph) | - | 4SM |
| | KGRB 212153Z 28005KT 4SM HZ OVC025 M04/M07 A3011 RMK AO2 SLP207 T10391072 |
| 14:53 CST |  Overcast Hazy | -4°C / 25°F | -7°C / 19°F | 80% | 1019 mb (30.09 in) | W 11 kph (W 6.9 mph) | - | 4SM |
| | KGRB 212053Z 27006KT 4SM HZ BKN020 OVC027 M04/M07 A3008 RMK AO2 SLP199 T10391072 53005 |
| 13:53 CST |  Overcast Hazy | -4°C / 25°F | -7°C / 19°F | 80% | 1019 mb (30.09 in) | SSW 15 kph (SSW 9.2 mph) | - | 4SM |
| | KGRB 211953Z 26008KT 4SM HZ OVC020 M04/M07 A3008 RMK AO2 SLP197 T10391072 |
| 12:53 CST |  Overcast Hazy | -4°C / 25°F | -8°C / 18°F | 74% | 1018 mb (30.06 in) | W 13 kph (W 8.1 mph) | - | 5SM |
| | KGRB 211853Z 27007KT 5SM HZ OVC020 M04/M08 A3007 RMK AO2 SLP193 T10391078 |
| 11:53 CST |  Overcast Hazy | -4°C / 25°F | -7°C / 19°F | 80% | 1018 mb (30.06 in) | W 13 kph (W 8.1 mph) | - | 6SM |
| | KGRB 211753Z 27007KT 6SM HZ OVC022 M04/M07 A3007 RMK AO2 SLP195 60001 T10441072 11044 21078 58001 |
| 11:04 CST |  Overcast Hazy | -4°C / 25°F | -7°C / 19°F | 80% | 1019 mb (30.09 in) | W 19 kph (W 11.5 mph) | - | 5SM |
| | KGRB 211704Z 28010KT 5SM HZ BKN028 OVC033 M04/M07 A3008 RMK AO2 |
| 10:53 CST |  Overcast Hazy | -4°C / 25°F | -7°C / 19°F | 80% | 1019 mb (30.09 in) | SSW 11 kph (SSW 6.9 mph) | - | 5SM |
| | KGRB 211653Z 26006KT 5SM HZ OVC031 M04/M07 A3008 RMK AO2 SLP200 T10441072 |
| 10:50 CST |  Overcast Hazy | -4°C / 25°F | -7°C / 19°F | 80% | 1019 mb (30.09 in) | SSW 13 kph (SSW 8.1 mph) | - | 5SM |
| | KGRB 211650Z 26007KT 5SM HZ OVC031 M04/M07 A3008 RMK AO2 |
| 09:53 CST |  Overcast Fog And Mist | -6°C / 21°F | -8°C / 18°F | 86% | 1018 mb (30.06 in) | SSW 9 kph (SSW 5.8 mph) | 0.25 mm (0.01 in) | 4SM |
| | KGRB 211553Z 24005KT 4SM BR BKN025 OVC032 M06/M08 A3007 RMK AO2 SNE31 SLP197 P0001 T10561078 |
| 09:33 CST |  Overcast Fog And Mist | -6°C / 21°F | -8°C / 18°F | 86% | 1018 mb (30.06 in) | SW 7 kph (SW 4.6 mph) | 0.25 mm (0.01 in) | 3SM |
| | KGRB 211533Z 22004KT 3SM BR BKN029 OVC035 M06/M08 A3007 RMK AO2 SNE31 P0001 |
| 09:25 CST |  Overcast Light Snow | -6°C / 21°F | -8°C / 18°F | 86% | 1018 mb (30.06 in) | SW 9 kph (SW 5.8 mph) | 0.25 mm (0.01 in) | 2 1/2SM |
| | KGRB 211525Z 21005KT 2 1/2SM -SN BR SCT026 OVC033 M06/M08 A3007 RMK AO2 P0001 |
| 08:53 CST |  Overcast Light Snow | -7°C / 19°F | -9°C / 16°F | 86% | 1018 mb (30.06 in) | SSE 7 kph (SSE 4.6 mph) | 0.00 mm (0.00 in) | 1 1/4SM |
| | KGRB 211453Z 20004KT 1 1/4SM -SN BR SCT009 BKN020 OVC024 M07/M09 A3006 RMK AO2 SNB38 SLP194 P0000 60000 T10671089 53004 |
| 08:49 CST |  Overcast Light Snow | -7°C / 19°F | -9°C / 16°F | 86% | 1018 mb (30.06 in) | S 6 kph (S 3.5 mph) | 0.00 mm (0.00 in) | 1 3/4SM |
| | KGRB 211449Z 19003KT 1 3/4SM -SN BR SCT009 OVC020 M07/M09 A3006 RMK AO2 SNB38 P0000 |
| 08:35 CST |  Overcast Fog And Mist | -7°C / 19°F | -9°C / 16°F | 86% | 1018 mb (30.06 in) | Calm | - | 4SM |
| | KGRB 211435Z 00000KT 4SM BR BKN009 OVC018 M07/M09 A3007 RMK AO2 |
| 07:53 CST |  Overcast Fog And Mist | -7°C / 19°F | -9°C / 16°F | 86% | 1018 mb (30.06 in) | Calm | - | 6SM |
| | KGRB 211353Z 00000KT 6SM BR SCT013 BKN023 OVC028 M07/M09 A3006 RMK AO2 SLP193 T10721094 |
| 07:41 CST |  Overcast Fog And Mist | -7°C / 19°F | -9°C / 16°F | 86% | 1018 mb (30.06 in) | Calm | - | 6SM |
| | KGRB 211341Z 00000KT 6SM BR SCT013 OVC028 M07/M09 A3006 RMK AO2 |
| 06:53 CST |  Overcast | -8°C / 18°F | -10°C / 14°F | 86% | 1018 mb (30.06 in) | Calm | - | 8SM |
| | KGRB 211253Z 00000KT 8SM OVC030 M08/M10 A3005 RMK AO2 SLP189 T10781100 |
| 05:53 CST |  Overcast | -8°C / 18°F | -9°C / 16°F | 93% | 1018 mb (30.06 in) | S 6 kph (S 3.5 mph) | - | 9SM |
| | KGRB 211153Z 19003KT 9SM OVC034 M08/M09 A3005 RMK AO2 SLP190 60000 T10781094 11072 21083 56005 |
| 04:53 CST |  Overcast | -8°C / 18°F | -10°C / 14°F | 86% | 1018 mb (30.06 in) | Calm | - | 10SM |
| | KGRB 211053Z AUTO 00000KT 10SM OVC036 M08/M10 A3005 RMK AO2 SLP190 T10781100 |
| 03:53 CST |  Overcast | -8°C / 18°F | -10°C / 14°F | 86% | 1018 mb (30.06 in) | Calm | - | 10SM |
| | KGRB 210953Z AUTO 00000KT 10SM OVC040 M08/M10 A3005 RMK AO2 SLP191 T10781100 |
| 02:53 CST |  Overcast | -8°C / 18°F | -10°C / 14°F | 86% | 1018 mb (30.06 in) | Calm | 0.00 mm (0.00 in) | 9SM |
| | KGRB 210853Z AUTO 00000KT 9SM OVC044 M08/M10 A3006 RMK AO2 SNB0759E25 SLP193 P0000 60000 T10781100 56003 |
| 01:53 CST |  Overcast | -7°C / 19°F | -11°C / 12°F | 73% | 1018 mb (30.06 in) | Calm | - | 10SM |
| | KGRB 210753Z AUTO 00000KT 10SM OVC048 M07/M11 A3006 RMK AO2 SLP193 T10721106 |
| 00:53 CST |  Overcast | -8°C / 18°F | -11°C / 12°F | 79% | 1018 mb (30.06 in) | SSW 6 kph (SSW 3.5 mph) | 0.00 mm (0.00 in) | 9SM |
| | KGRB 210653Z AUTO 26003KT 9SM OVC055 M08/M11 A3007 RMK AO2 SNB41E50 SLP194 P0000 T10781106 |