| 05:55 CST |  Clear | -3°C / 27°F | -6°C / 21°F | 80% | 1019 mb (30.09 in) | NNW 6 kph (NNW 3.5 mph) | - | 10SM |
| | KCMY 061155Z AUTO 33003KT 10SM CLR M03/M06 A3010 RMK AO2 |
| 05:35 CST |  Partly Cloudy | -3°C / 27°F | -6°C / 21°F | 80% | 1019 mb (30.09 in) | Calm | - | 10SM |
| | KCMY 061135Z AUTO 00000KT 10SM SCT050 M03/M06 A3009 RMK AO2 |
| 05:15 CST |  Mostly Cloudy | -3°C / 27°F | -5°C / 23°F | 86% | 1019 mb (30.09 in) | N 7 kph (N 4.6 mph) | - | 10SM |
| | KCMY 061115Z AUTO 35004KT 10SM BKN050 M03/M05 A3008 RMK AO2 |
| 04:55 CST |  Overcast | -3°C / 27°F | -5°C / 23°F | 86% | 1019 mb (30.09 in) | Calm | - | 10SM |
| | KCMY 061055Z AUTO 00000KT 10SM OVC050 M03/M05 A3008 RMK AO2 |
| 04:35 CST |  Overcast | -4°C / 25°F | -6°C / 21°F | 86% | 1019 mb (30.09 in) | Calm | - | 10SM |
| | KCMY 061035Z AUTO 00000KT 10SM OVC050 M04/M06 A3008 RMK AO2 |
| 04:15 CST |  Overcast | -5°C / 23°F | -6°C / 21°F | 93% | 1018 mb (30.06 in) | Calm | - | 10SM |
| | KCMY 061015Z AUTO 00000KT 10SM OVC050 M05/M06 A3007 RMK AO2 |
| 03:55 CST |  Overcast | -5°C / 23°F | -6°C / 21°F | 93% | 1018 mb (30.06 in) | Calm | - | 10SM |
| | KCMY 060955Z AUTO 00000KT 10SM OVC050 M05/M06 A3006 RMK AO2 |
| 03:35 CST |  Overcast | -6°C / 21°F | -6°C / 21°F | 100% | 1018 mb (30.06 in) | Calm | - | 10SM |
| | KCMY 060935Z AUTO 00000KT 10SM OVC050 M06/M06 A3005 RMK AO2 |
| 03:15 CST |  Mostly Cloudy | -6°C / 21°F | -7°C / 19°F | 93% | 1018 mb (30.06 in) | Calm | - | 10SM |
| | KCMY 060915Z AUTO 00000KT 10SM BKN050 M06/M07 A3005 RMK AO2 |
| 02:55 CST |  Partly Cloudy | -6°C / 21°F | -7°C / 19°F | 93% | 1018 mb (30.06 in) | Calm | - | 10SM |
| | KCMY 060855Z AUTO 00000KT 10SM SCT050 M06/M07 A3005 RMK AO2 |
| 02:35 CST |  Clear | -5°C / 23°F | -7°C / 19°F | 86% | 1017 mb (30.03 in) | Calm | - | 10SM |
| | KCMY 060835Z AUTO 00000KT 10SM CLR M05/M07 A3004 RMK AO2 |
| 02:15 CST |  Clear | -5°C / 23°F | -6°C / 21°F | 93% | 1017 mb (30.03 in) | Calm | - | 10SM |
| | KCMY 060815Z AUTO 00000KT 10SM CLR M05/M06 A3004 RMK AO2 |
| 01:55 CST |  Partly Cloudy | -4°C / 25°F | -6°C / 21°F | 86% | 1017 mb (30.03 in) | Calm | - | 10SM |
| | KCMY 060755Z AUTO 00000KT 10SM SCT060 M04/M06 A3003 RMK AO2 |
| 01:35 CST |  Mostly Cloudy | -3°C / 27°F | -6°C / 21°F | 80% | 1017 mb (30.03 in) | Calm | - | 10SM |
| | KCMY 060735Z AUTO 00000KT 10SM BKN060 M03/M06 A3002 RMK AO2 |
| 01:15 CST |  Mostly Cloudy | -1°C / 30°F | -5°C / 23°F | 75% | 1017 mb (30.03 in) | Calm | - | 10SM |
| | KCMY 060715Z AUTO 00000KT 10SM BKN060 M01/M05 A3002 RMK AO2 |
| 00:55 CST |  Overcast | 0°C / 32°F | -4°C / 25°F | 75% | 1016 mb (30 in) | Calm | - | 10SM |
| | KCMY 060655Z AUTO 00000KT 10SM OVC060 00/M04 A3001 RMK AO2 |
| 00:35 CST |  Overcast | 0°C / 32°F | -5°C / 23°F | 69% | 1016 mb (30 in) | Calm | - | 10SM |
| | KCMY 060635Z AUTO 00000KT 10SM OVC060 00/M05 A3001 RMK AO2 |
| 00:15 CST |  Overcast | 0°C / 32°F | -4°C / 25°F | 75% | 1016 mb (30 in) | Calm | - | 10SM |
| | KCMY 060615Z AUTO 00000KT 10SM OVC060 00/M04 A3001 RMK AO2 |