| 12:53 CST |  Overcast | -7°C / 19°F | -12°C / 10°F | 68% | 1019 mb (30.09 in) | NE 33 kph (NE 20.7 mph) | - | 10SM |
| | KGRI 061853Z 03018G24KT 10SM OVC050 M07/M12 A3009 RMK AO2 SLP219 T10671122 |
| 12:00 CST |  Mostly Cloudy | -6°C / 21°F | -12°C / 10°F | 63% | 1020 mb (30.12 in) | NE 33 kph (NE 20.7 mph) | - | 10SM |
| | KGRI 061800Z 03018G22KT 10SM BKN023 M06/M12 A3012 RMK AO2 |
| 11:53 CST |  Mostly Cloudy | -6°C / 21°F | -12°C / 10°F | 63% | 1020 mb (30.12 in) | NE 30 kph (NE 18.4 mph) | - | 10SM |
| | KGRI 061753Z 03016G23KT 10SM BKN075 M06/M12 A3012 RMK AO2 SLP229 T10611117 11061 21083 58002 |
| 11:39 CST |  Overcast | -6°C / 21°F | -12°C / 10°F | 63% | 1021 mb (30.15 in) | NE 30 kph (NE 18.4 mph) | - | 10SM |
| | KGRI 061739Z 03016G21KT 10SM SCT017 OVC075 M06/M12 A3014 RMK AO2 |
| 11:06 CST |  Overcast | -6°C / 21°F | -11°C / 12°F | 68% | 1021 mb (30.15 in) | NE 28 kph (NE 17.3 mph) | - | 9SM |
| | KGRI 061706Z 05015KT 9SM OVC015 M06/M11 A3016 RMK AO2 |
| 10:53 CST |  Overcast | -7°C / 19°F | -11°C / 12°F | 73% | 1021 mb (30.15 in) | NE 22 kph (NE 13.8 mph) | - | 8SM |
| | KGRI 061653Z 05012G20KT 8SM OVC013 M07/M11 A3016 RMK AO2 SLP241 T10671106 |
| 09:53 CST |  Overcast | -7°C / 19°F | -10°C / 14°F | 79% | 1020 mb (30.12 in) | NE 22 kph (NE 13.8 mph) | - | 10SM |
| | KGRI 061553Z 04012G20KT 10SM OVC011 M07/M10 A3013 RMK AO2 SLP232 T10721100 |
| 08:53 CST |  Overcast | -8°C / 18°F | -11°C / 12°F | 79% | 1020 mb (30.12 in) | NE 28 kph (NE 17.3 mph) | - | 10SM |
| | KGRI 061453Z 04015G20KT 10SM OVC011 M08/M11 A3013 RMK AO2 SLP232 T10781106 53013 |
| 07:53 CST |  Overcast | -8°C / 18°F | -11°C / 12°F | 79% | 1020 mb (30.12 in) | NE 22 kph (NE 13.8 mph) | - | 8SM |
| | KGRI 061353Z 04012G19KT 8SM OVC011 M08/M11 A3011 RMK AO2 SLP223 T10781106 |
| 07:13 CST |  Overcast | -8°C / 18°F | -11°C / 12°F | 79% | 1019 mb (30.09 in) | NE 20 kph (NE 12.7 mph) | - | 7SM |
| | KGRI 061313Z 04011G19KT 7SM OVC009 M08/M11 A3009 RMK AO2 |
| 07:04 CST |  Mostly Cloudy | -8°C / 18°F | -11°C / 12°F | 79% | 1019 mb (30.09 in) | NE 24 kph (NE 15 mph) | - | 7SM |
| | KGRI 061304Z 04013G21KT 7SM BKN011 M08/M11 A3008 RMK AO2 CIG 009V012 |
| 06:53 CST |  Partly Cloudy | -8°C / 18°F | -11°C / 12°F | 79% | 1019 mb (30.09 in) | NE 28 kph (NE 17.3 mph) | - | 7SM |
| | KGRI 061253Z 04015G19KT 7SM SCT009 M08/M11 A3009 RMK AO2 SLP215 T10781106 |
| 06:42 CST |  Partly Cloudy | -8°C / 18°F | -11°C / 12°F | 79% | 1019 mb (30.09 in) | NE 28 kph (NE 17.3 mph) | - | 7SM |
| | KGRI 061242Z AUTO 04015G19KT 7SM FEW009 M08/M11 A3009 RMK AO2 |
| 06:11 CST |  Partly Cloudy | -8°C / 18°F | -11°C / 12°F | 79% | 1019 mb (30.09 in) | NE 26 kph (NE 16.1 mph) | - | 7SM |
| | KGRI 061211Z AUTO 04014G18KT 7SM SCT011 M08/M11 A3009 RMK AO2 |
| 05:53 CST |  Mostly Cloudy | -8°C / 18°F | -11°C / 12°F | 79% | 1019 mb (30.09 in) | NE 20 kph (NE 12.7 mph) | - | 7SM |
| | KGRI 061153Z AUTO 05011KT 7SM BKN011 M08/M11 A3009 RMK AO2 SLP215 7//// T10781106 11072 21089 51005 |
| 05:44 CST |  Mostly Cloudy | -8°C / 18°F | -10°C / 14°F | 86% | 1019 mb (30.09 in) | NE 20 kph (NE 12.7 mph) | - | 8SM |
| | KGRI 061144Z AUTO 05011KT 8SM BKN011 M08/M10 A3009 RMK AO2 |
| 04:53 CST |  Clear | -8°C / 18°F | -11°C / 12°F | 79% | 1019 mb (30.09 in) | NE 19 kph (NE 11.5 mph) | - | 9SM |
| | KGRI 061053Z AUTO 05010KT 9SM CLR M08/M11 A3008 RMK AO2 SLP211 T10781106 |
| 03:53 CST |  Clear | -7°C / 19°F | -10°C / 14°F | 79% | 1019 mb (30.09 in) | NE 17 kph (NE 10.4 mph) | - | 10SM |
| | KGRI 060953Z AUTO 04009KT 10SM CLR M07/M10 A3009 RMK AO2 SLP210 T10721100 |
| 02:53 CST |  Clear | -7°C / 19°F | -10°C / 14°F | 79% | 1018 mb (30.06 in) | NE 13 kph (NE 8.1 mph) | - | 10SM |
| | KGRI 060853Z AUTO 03007KT 10SM CLR M07/M10 A3007 RMK AO2 SLP204 T10721100 53009 |
| 01:53 CST |  Clear | -8°C / 18°F | -11°C / 12°F | 79% | 1018 mb (30.06 in) | NNE 15 kph (NNE 9.2 mph) | - | 10SM |
| | KGRI 060753Z AUTO 02008KT 10SM CLR M08/M11 A3006 RMK AO2 SLP200 T10781106 |
| 00:53 CST |  Clear | -8°C / 18°F | -12°C / 10°F | 73% | 1018 mb (30.06 in) | NE 7 kph (NE 4.6 mph) | - | 10SM |
| | KGRI 060653Z AUTO 04004KT 10SM CLR M08/M12 A3006 RMK AO2 SLP201 T10831117 |