| 07:53 CST |  Overcast | -6°C / 21°F | -10°C / 14°F | 74% | 1021 mb (30.15 in) | N 15 kph (N 9.2 mph) | - | 8SM |
| | KGRB 071353Z 36008KT 8SM BKN047 OVC060 M06/M10 A3016 RMK AO2 SLP224 T10561100 |
| 06:53 CST |  Overcast | -5°C / 23°F | -11°C / 12°F | 63% | 1021 mb (30.15 in) | N 13 kph (N 8.1 mph) | - | 10SM |
| | KGRB 071253Z 36007KT 10SM OVC049 M05/M11 A3015 RMK AO2 SLP222 T10501111 |
| 06:27 CST |  Overcast | -5°C / 23°F | -11°C / 12°F | 63% | 1021 mb (30.15 in) | N 13 kph (N 8.1 mph) | - | 10SM |
| | KGRB 071227Z 36007KT 10SM BKN036 OVC065 M05/M11 A3015 RMK AO2 |
| 06:08 CST |  Overcast | -5°C / 23°F | -11°C / 12°F | 63% | 1021 mb (30.15 in) | N 17 kph (N 10.4 mph) | - | 10SM |
| | KGRB 071208Z 36009KT 10SM OVC027 M05/M11 A3015 RMK AO2 |
| 05:53 CST |  Overcast | -5°C / 23°F | -11°C / 12°F | 63% | 1021 mb (30.15 in) | N 17 kph (N 10.4 mph) | - | 10SM |
| | KGRB 071153Z 01009KT 10SM BKN033 OVC044 M05/M11 A3015 RMK AO2 SLP221 60000 T10501106 11044 21056 56007 |
| 04:53 CST |  Overcast | -5°C / 23°F | -11°C / 12°F | 63% | 1021 mb (30.15 in) | N 11 kph (N 6.9 mph) | 0.00 mm (0.00 in) | 10SM |
| | KGRB 071053Z AUTO 36006KT 10SM BKN035 OVC050 M05/M11 A3015 RMK AO2 SNE11 SLP220 P0000 T10501106 TSNO |
| 04:14 CST |  Overcast | -6°C / 21°F | -9°C / 16°F | 80% | 1021 mb (30.15 in) | N 19 kph (N 11.5 mph) | 0.00 mm (0.00 in) | 8SM |
| | KGRB 071014Z AUTO 01010KT 8SM BKN033 OVC050 M06/M09 A3015 RMK AO2 SNE11 P0000 TSNO |
| 03:53 CST |  Overcast Light Snow | -6°C / 21°F | -9°C / 16°F | 80% | 1021 mb (30.15 in) | N 17 kph (N 10.4 mph) | 0.00 mm (0.00 in) | 3SM |
| | KGRB 070953Z AUTO 01009KT 3SM -SN BKN023 BKN027 OVC035 M06/M09 A3015 RMK AO2 SNB21 SLP221 P0000 T10561094 TSNO |
| 03:45 CST |  Overcast Light Snow | -6°C / 21°F | -9°C / 16°F | 80% | 1021 mb (30.15 in) | N 19 kph (N 11.5 mph) | 0.00 mm (0.00 in) | 2 1/2SM |
| | KGRB 070945Z AUTO 01010KT 2 1/2SM -SN BKN018 OVC027 M06/M09 A3015 RMK AO2 SNB21 P0000 TSNO |
| 03:28 CST |  Overcast Light Snow | -6°C / 21°F | -10°C / 14°F | 74% | 1021 mb (30.15 in) | N 20 kph (N 12.7 mph) | 0.00 mm (0.00 in) | 6SM |
| | KGRB 070928Z AUTO 01011KT 6SM -SN OVC024 M06/M10 A3016 RMK AO2 SNB21 P0000 TSNO |
| 02:53 CST |  Overcast | -5°C / 23°F | -11°C / 12°F | 63% | 1022 mb (30.18 in) | N 19 kph (N 11.5 mph) | - | 10SM |
| | KGRB 070853Z AUTO 01010KT 10SM BKN055 OVC070 M05/M11 A3017 RMK AO2 SLP227 T10501106 56006 TSNO |
| 01:53 CST |  Overcast | -5°C / 23°F | -11°C / 12°F | 63% | 1022 mb (30.18 in) | N 20 kph (N 12.7 mph) | - | 10SM |
| | KGRB 070753Z AUTO 01011KT 10SM OVC065 M05/M11 A3018 RMK AO2 SLP229 T10501111 TSNO |
| 00:53 CST |  Overcast | -4°C / 25°F | -11°C / 12°F | 59% | 1022 mb (30.18 in) | N 15 kph (N 9.2 mph) | - | 10SM |
| | KGRB 070653Z AUTO 01008KT 10SM BKN031 OVC044 M04/M11 A3018 RMK AO2 SLP229 T10441106 TSNO |