| 07:51 CST |  Overcast Light Snow | -4°C / 25°F | -7°C / 19°F | 80% | 1006 mb (29.71 in) | SSE 22 kph (SSE 13.8 mph) | 0.51 mm (0.02 in) | 1 1/2SM |
| | KORD 261351Z 16012KT 1 1/2SM -SN BR BKN024 BKN030 OVC040 M04/M07 A2970 RMK AO2 SLP064 P0002 T10441067 $ |
| 07:25 CST |  Overcast Light Snow | -5°C / 23°F | -7°C / 19°F | 86% | 1006 mb (29.71 in) | SSE 20 kph (SSE 12.7 mph) | 0.25 mm (0.01 in) | 1 1/2SM |
| | KORD 261325Z 15011KT 1 1/2SM R14R/6000VP6000FT -SN BR BKN024 OVC034 M05/M07 A2970 RMK AO2 P0001 $ |
| 06:51 CST |  Overcast Light Snow | -5°C / 23°F | -7°C / 19°F | 86% | 1006 mb (29.71 in) | SSE 22 kph (SSE 13.8 mph) | 0.25 mm (0.01 in) | 1SM |
| | KORD 261251Z 15012KT 1SM R14R/4000VP6000FT -SN BR BKN024 OVC036 M05/M07 A2970 RMK AO2 SLP064 P0001 T10501067 $ |
| 06:27 CST |  Overcast Light Snow | -6°C / 21°F | -7°C / 19°F | 93% | 1005 mb (29.68 in) | SE 26 kph (SE 16.1 mph) | 0.25 mm (0.01 in) | 1SM |
| | KORD 261227Z 14014KT 1SM R14R/P6000FT -SN BR BKN024 OVC036 M06/M07 A2969 RMK AO2 P0001 $ |
| 06:15 CST |  Overcast Light Snow | -6°C / 21°F | -7°C / 19°F | 93% | 1005 mb (29.68 in) | SSE 24 kph (SSE 15 mph) | 0.25 mm (0.01 in) | 2SM |
| | KORD 261215Z 15013KT 2SM -SN BR BKN024 OVC036 M06/M07 A2969 RMK AO2 P0001 $ |
| 05:58 CST |  Overcast Light Snow | -6°C / 21°F | -7°C / 19°F | 93% | 1005 mb (29.68 in) | SE 26 kph (SE 16.1 mph) | 0.00 mm (0.00 in) | 1SM |
| | KORD 261158Z 14014KT 1SM R14R/5500VP6000FT -SN BR BKN024 OVC036 M06/M07 A2969 RMK AO2 P0000 $ |
| 05:51 CST |  Overcast Light Snow | -6°C / 21°F | -7°C / 19°F | 93% | 1005 mb (29.68 in) | SSE 26 kph (SSE 16.1 mph) | 0.00 mm (0.00 in) | 2SM |
| | KORD 261151Z 15014KT 2SM -SN BR BKN024 OVC038 M06/M07 A2969 RMK AO2 SLP063 4/001 P0000 60001 70011 T10561072 11056 21067 56008 $ |
| 05:04 CST |  Overcast Light Snow | -6°C / 21°F | -8°C / 18°F | 86% | 1005 mb (29.68 in) | SE 22 kph (SE 13.8 mph) | 0.00 mm (0.00 in) | 3SM |
| | KORD 261104Z 14012KT 3SM -SN BR BKN020 BKN035 OVC043 M06/M08 A2969 RMK AO2 P0000 $ |
| 04:51 CST |  Overcast Light Snow | -6°C / 21°F | -8°C / 18°F | 86% | 1005 mb (29.68 in) | SSE 22 kph (SSE 13.8 mph) | 0.25 mm (0.01 in) | 1 3/4SM |
| | KORD 261051Z 15012KT 1 3/4SM R14R/6000VP6000FT -SN BR BKN020 BKN031 OVC048 M06/M08 A2969 RMK AO2 SLP064 P0001 T10611078 $ |
| 04:48 CST |  Overcast Light Snow | -6°C / 21°F | -8°C / 18°F | 86% | 1006 mb (29.71 in) | SSE 22 kph (SSE 13.8 mph) | 0.25 mm (0.01 in) | 1 3/4SM |
| | KORD 261048Z 15012KT 1 3/4SM -SN BR BKN022 BKN031 OVC048 M06/M08 A2970 RMK AO2 P0001 $ |
| 04:39 CST |  Overcast Light Snow | -6°C / 21°F | -8°C / 18°F | 86% | 1006 mb (29.71 in) | SSE 22 kph (SSE 13.8 mph) | 0.25 mm (0.01 in) | 4SM |
| | KORD 261039Z 15012KT 4SM -SN BR BKN020 OVC031 M06/M08 A2970 RMK AO2 P0001 $ |
| 04:06 CST |  Overcast Light Snow | -6°C / 21°F | -8°C / 18°F | 86% | 1006 mb (29.71 in) | SSE 17 kph (SSE 10.4 mph) | 0.00 mm (0.00 in) | 2SM |
| | KORD 261006Z 15009KT 2SM -SN BR BKN018 BKN031 OVC047 M06/M08 A2970 RMK AO2 P0000 $ |
| 03:55 CST |  Overcast Light Snow | -6°C / 21°F | -9°C / 16°F | 80% | 1006 mb (29.71 in) | SSE 19 kph (SSE 11.5 mph) | 0.00 mm (0.00 in) | 3SM |
| | KORD 260955Z 15010KT 3SM -SN BKN028 BKN034 OVC047 M06/M09 A2971 RMK AO2 P0000 $ |
| 03:51 CST |  Overcast Light Snow | -6°C / 21°F | -9°C / 16°F | 80% | 1006 mb (29.71 in) | SSE 19 kph (SSE 11.5 mph) | 0.00 mm (0.00 in) | 5SM |
| | KORD 260951Z 15010KT 5SM -SN BKN035 BKN047 OVC060 M06/M09 A2971 RMK AO2 SLP068 P0000 T10611094 $ |
| 02:51 CST |  Overcast Light Snow | -7°C / 19°F | -10°C / 14°F | 79% | 1006 mb (29.71 in) | SSE 13 kph (SSE 8.1 mph) | 0.00 mm (0.00 in) | 7SM |
| | KORD 260851Z 16007KT 7SM -SN BKN036 OVC060 M07/M10 A2971 RMK AO2 SNB0757 SLP070 P0000 60000 T10671100 50011 $ |
| 01:51 CST |  Overcast | -7°C / 19°F | -11°C / 12°F | 73% | 1006 mb (29.71 in) | S 15 kph (S 9.2 mph) | 0.00 mm (0.00 in) | 10SM |
| | KORD 260751Z 19008KT 10SM FEW025 BKN055 OVC100 M07/M11 A2972 RMK AO2 SNE37 SLP070 P0000 T10671111 $ |
| 00:51 CST |  Overcast Light Snow | -7°C / 19°F | -12°C / 10°F | 68% | 1006 mb (29.71 in) | SW 20 kph (SW 12.7 mph) | 0.00 mm (0.00 in) | 9SM |
| | KORD 260651Z 21011KT 9SM -SN BKN038 OVC045 M07/M12 A2970 RMK AO2 SLP064 P0000 T10671122 $ |