| 06:03 CST |  Overcast | -7°C / 19°F | -11°C / 12°F | 73% | 1016 mb (30 in) | W 13 kph (W 8.1 mph) | - | 10SM |
| | KISW 041203Z AUTO 27007G15KT 10SM SCT026 OVC042 M07/M11 A2999 RMK AO2 TSNO |
| 05:54 CST |  Overcast | -7°C / 19°F | -10°C / 14°F | 79% | 1016 mb (30 in) | W 19 kph (W 11.5 mph) | 0.00 mm (0.00 in) | 9SM |
| | KISW 041154Z AUTO 27010G16KT 9SM FEW017 BKN025 OVC042 M07/M10 A2999 RMK AO2 SNE50 SLP172 P0000 60000 T10671100 11061 21067 55004 TSNO |
| 04:54 CST |  Overcast Light Snow | -7°C / 19°F | -9°C / 16°F | 86% | 1015 mb (29.97 in) | SW 11 kph (SW 6.9 mph) | 0.00 mm (0.00 in) | 9SM |
| | KISW 041054Z AUTO 23006KT 9SM -SN BKN015 OVC020 M07/M09 A2998 RMK AO2 SLP169 P0000 T10671089 TSNO |
| 04:31 CST |  Overcast Light Snow | -7°C / 19°F | -10°C / 14°F | 79% | 1016 mb (30 in) | SSW 9 kph (SSW 5.8 mph) | 0.00 mm (0.00 in) | 7SM |
| | KISW 041031Z AUTO 24005KT 7SM -SN BKN022 OVC035 M07/M10 A2999 RMK AO2 P0000 TSNO |
| 03:54 CST |  Overcast Light Snow | -7°C / 19°F | -10°C / 14°F | 79% | 1016 mb (30 in) | SSW 9 kph (SSW 5.8 mph) | 0.00 mm (0.00 in) | 10SM |
| | KISW 040954Z AUTO 26005KT 10SM -SN SCT030 OVC035 M07/M10 A2999 RMK AO2 SNB54 SLP172 P0000 T10671100 TSNO |
| 02:54 CST |  Overcast | -7°C / 19°F | -11°C / 12°F | 73% | 1016 mb (30 in) | SSW 9 kph (SSW 5.8 mph) | - | 10SM |
| | KISW 040854Z AUTO 25005KT 10SM OVC037 M07/M11 A3000 RMK AO2 SLP175 60000 T10671106 53002 TSNO |
| 01:54 CST |  Overcast | -7°C / 19°F | -11°C / 12°F | 73% | 1016 mb (30 in) | WNW 7 kph (WNW 4.6 mph) | 0.00 mm (0.00 in) | 9SM |
| | KISW 040754Z AUTO 29004KT 9SM OVC033 M07/M11 A3000 RMK AO2 SNB11E51 SLP174 P0000 T10671106 TSNO |
| 01:04 CST |  Overcast | -7°C / 19°F | -11°C / 12°F | 73% | 1016 mb (30 in) | WNW 9 kph (WNW 5.8 mph) | - | 10SM |
| | KISW 040704Z AUTO 29005KT 10SM OVC031 M07/M11 A2999 RMK AO2 TSNO |
| 00:54 CST |  Overcast | -7°C / 19°F | -11°C / 12°F | 73% | 1016 mb (30 in) | NW 11 kph (NW 6.9 mph) | 0.00 mm (0.00 in) | 10SM |
| | KISW 040654Z AUTO 30006KT 10SM OVC029 M07/M11 A2999 RMK AO2 SNE48 SLP172 P0000 T10671106 TSNO |