| 04:53 CST |  Overcast | -2°C / 28°F | -4°C / 25°F | 86% | 1013 mb (29.91 in) | N 19 kph (N 11.5 mph) | - | 9SM |
| | KGRI 221053Z AUTO 35010KT 9SM OVC007 M02/M04 A2991 RMK AO2 SLP144 T10221039 |
| 03:53 CST |  Overcast | -2°C / 28°F | -3°C / 27°F | 93% | 1013 mb (29.91 in) | N 20 kph (N 12.7 mph) | - | 9SM |
| | KGRI 220953Z AUTO 35011KT 9SM OVC007 M02/M03 A2991 RMK AO2 SLP143 T10171033 |
| 02:53 CST |  Overcast | -2°C / 28°F | -3°C / 27°F | 93% | 1013 mb (29.91 in) | NNW 19 kph (NNW 11.5 mph) | - | 9SM |
| | KGRI 220853Z AUTO 33010KT 9SM OVC007 M02/M03 A2991 RMK AO2 SLP145 T10171028 53007 |
| 01:53 CST |  Overcast | -1°C / 30°F | -3°C / 27°F | 86% | 1012 mb (29.88 in) | NNW 24 kph (NNW 15 mph) | - | 10SM |
| | KGRI 220753Z AUTO 34013KT 10SM OVC009 M01/M03 A2989 RMK AO2 SLP136 T10111033 |
| 00:53 CST |  Overcast | -1°C / 30°F | -3°C / 27°F | 86% | 1013 mb (29.91 in) | NNW 22 kph (NNW 13.8 mph) | - | 10SM |
| | KGRI 220653Z AUTO 33012KT 10SM OVC009 M01/M03 A2990 RMK AO2 SLP140 T10111028 |
| 00:14 CST |  Overcast | -1°C / 30°F | -2°C / 28°F | 93% | 1013 mb (29.91 in) | NNW 32 kph (NNW 19.6 mph) | - | 8SM |
| | KGRI 220614Z AUTO 34017KT 8SM OVC005 M01/M02 A2990 RMK AO2 |