| 06:51 CST |  Overcast | -4°C / 25°F | -11°C / 12°F | 59% | 1021 mb (30.15 in) | SW 13 kph (SW 8.1 mph) | - | 10SM |
| | KMDW 051251Z 21007KT 10SM OVC042 M04/M11 A3015 RMK AO2 SLP227 T10391106 |
| 05:51 CST |  Overcast | -4°C / 25°F | -12°C / 10°F | 54% | 1021 mb (30.15 in) | SW 9 kph (SW 5.8 mph) | 0.00 mm (0.00 in) | 10SM |
| | KMDW 051151Z 23005KT 10SM OVC040 M04/M12 A3015 RMK AO2 SNE24 SLP223 P0000 60000 T10391117 11039 21044 55006 |
| 04:51 CST |  Overcast Light Snow | -4°C / 25°F | -12°C / 10°F | 54% | 1021 mb (30.15 in) | SW 9 kph (SW 5.8 mph) | 0.00 mm (0.00 in) | 9SM |
| | KMDW 051051Z 22005KT 9SM -SN OVC040 M04/M12 A3014 RMK AO2 SLP223 P0000 T10391117 |
| 03:51 CST |  Overcast Light Snow | -4°C / 25°F | -12°C / 10°F | 54% | 1021 mb (30.15 in) | SW 11 kph (SW 6.9 mph) | 0.00 mm (0.00 in) | 9SM |
| | KMDW 050951Z 23006KT 9SM -SN OVC040 M04/M12 A3015 RMK AO2 SLP226 P0000 T10391117 |
| 02:51 CST |  Overcast Light Snow | -4°C / 25°F | -12°C / 10°F | 54% | 1022 mb (30.18 in) | SSE 11 kph (SSE 6.9 mph) | 0.00 mm (0.00 in) | 9SM |
| | KMDW 050851Z 20006KT 9SM -SN OVC040 M04/M12 A3017 RMK AO2 SLP230 P0000 60000 T10391117 58000 |
| 01:51 CST |  Overcast Light Snow | -4°C / 25°F | -12°C / 10°F | 54% | 1022 mb (30.18 in) | SW 11 kph (SW 6.9 mph) | 0.00 mm (0.00 in) | 9SM |
| | KMDW 050751Z 21006KT 9SM -SN OVC040 M04/M12 A3017 RMK AO2 SLP231 P0000 T10391117 |
| 00:51 CST |  Overcast Light Snow | -4°C / 25°F | -11°C / 12°F | 59% | 1021 mb (30.15 in) | SW 11 kph (SW 6.9 mph) | 0.00 mm (0.00 in) | 9SM |
| | KMDW 050651Z 23006KT 9SM -SN OVC036 M04/M11 A3016 RMK AO2 SLP229 P0000 T10391111 |