| 12:51 CST | 
Partly Cloudy | 3°C / 37°F | -4°C / 25°F | 60% | 1015 mb
(29.97 in) | SSW 9 kph
(SSW 5.8 mph) | - | 10SM |
| | KORD 271851Z 26005KT 10SM FEW034 SCT250 03/M04 A2997
RMK AO2 SLP156 T00331044 |
| 11:51 CST |
Partly Cloudy | 3°C / 37°F | -5°C / 23°F | 56% | 1016 mb
(30 in) | NW 9 kph
(NW 5.8 mph) | - | 10SM |
| | KORD 271751Z 32005KT 10SM FEW032 03/M05 A2999
RMK AO2 SLP162 T00281050 10028 21017 58004 |
| 10:51 CST |
Partly Cloudy | 2°C / 36°F | -6°C / 21°F | 56% | 1016 mb
(30 in) | Variable 7 kph
(Variable 4.6 mph) | - | 10SM |
| | KORD 271651Z VRB04KT 10SM FEW030 02/M06 A3001
RMK AO2 SLP167 T00171061 |
| 09:51 CST |
Partly Cloudy | 1°C / 34°F | -6°C / 21°F | 60% | 1017 mb
(30.03 in) | NW 15 kph
(NW 9.2 mph) | - | 10SM |
| | KORD 271551Z 32008KT 10SM FEW030 01/M06 A3003
RMK AO2 SLP175 T00111056 |
| 08:51 CST |
Partly Cloudy | 0°C / 32°F | -6°C / 21°F | 64% | 1016 mb
(30 in) | NW 15 kph
(NW 9.2 mph) | - | 10SM |
| | KORD 271451Z 30008KT 10SM FEW033 SCT110 00/M06 A3000
RMK AO2 SLP166 T00001061 51011 |
| 07:51 CST |
Partly Cloudy | -1°C / 30°F | -6°C / 21°F | 69% | 1016 mb
(30 in) | NW 11 kph
(NW 6.9 mph) | - | 10SM |
| | KORD 271351Z 31006KT 10SM FEW033 M01/M06 A3000
RMK AO2 SLP165 T10061056 $ |
| 06:51 CST | 
Partly Cloudy | -1°C / 30°F | -6°C / 21°F | 69% | 1016 mb
(30 in) | NW 11 kph
(NW 6.9 mph) | - | 10SM |
| | KORD 271251Z 31006KT 10SM FEW030 SCT150 M01/M06 A2999
RMK AO2 SLP163 T10111056 $ |
| 05:51 CST |
Partly Cloudy | -1°C / 30°F | -6°C / 21°F | 69% | 1015 mb
(29.97 in) | NNW 15 kph
(NNW 9.2 mph) | - | 10SM |
| | KORD 271151Z 33008KT 10SM FEW030 SCT150 M01/M06 A2997
RMK AO2 SLP155 70006 T10061061 10011 21006 53007 $ |
| 04:51 CST | 
Mostly Cloudy | -1°C / 30°F | -6°C / 21°F | 69% | 1015 mb
(29.97 in) | NNW 11 kph
(NNW 6.9 mph) | - | 10SM |
| | KORD 271051Z 34006KT 10SM SCT029 BKN150 M01/M06 A2996
RMK AO2 SLP152 T10061061 $ |
| 04:40 CST |
Mostly Cloudy | 0°C / 32°F | -6°C / 21°F | 64% | 1015 mb
(29.97 in) | NNW 17 kph
(NNW 10.4 mph) | - | 10SM |
| | KORD 271040Z 33009KT 10SM SCT029 BKN150 00/M06 A2996
RMK AO2 $ |
| 03:51 CST | 
Overcast | 1°C / 34°F | -6°C / 21°F | 60% | 1015 mb
(29.97 in) | NNW 24 kph
(NNW 15 mph) | - | 10SM |
| | KORD 270951Z 34013G18KT 10SM OVC029 01/M06 A2996
RMK AO2 SLP150 T00061056 $ |
| 02:51 CST |
Overcast | 1°C / 34°F | -5°C / 23°F | 65% | 1014 mb
(29.94 in) | NW 19 kph
(NW 11.5 mph) | - | 10SM |
| | KORD 270851Z 32010KT 10SM OVC029 01/M05 A2995
RMK AO2 SLP148 T00061050 53006 $ |
| 01:51 CST |
Overcast | 1°C / 34°F | -4°C / 25°F | 70% | 1014 mb
(29.94 in) | NW 24 kph
(NW 15 mph) | - | 10SM |
| | KORD 270751Z 32013KT 10SM OVC029 01/M04 A2994
RMK AO2 SLP143 T00111044 $ |
| 00:51 CST |
Overcast | 1°C / 34°F | -4°C / 25°F | 70% | 1014 mb
(29.94 in) | NW 19 kph
(NW 11.5 mph) | - | 10SM |
| | KORD 270651Z 30010KT 10SM OVC028 01/M04 A2993
RMK AO2 SLP139 T00111039 $ |
