| 08:55 CST |  Overcast Light Snow | 2°C / 36°F | 1°C / 34°F | 93% | 1012 mb (29.88 in) | Calm | - | 2SM |
| | KCMY 291455Z AUTO 00000KT 2SM -SN OVC009 02/01 A2988 RMK AO2 |
| 08:35 CST |  Overcast Unknown Precip | 2°C / 36°F | 1°C / 34°F | 93% | 1012 mb (29.88 in) | Calm | - | 2SM |
| | KCMY 291435Z AUTO 00000KT 2SM UP OVC009 02/01 A2987 RMK AO2 |
| 08:15 CST |  Overcast Light Snow | 2°C / 36°F | 1°C / 34°F | 93% | 1012 mb (29.88 in) | Calm | - | 1 3/4SM |
| | KCMY 291415Z AUTO 00000KT 1 3/4SM -SN OVC009 02/01 A2987 RMK AO2 VIS 1 1/2V2 1/2 |
| 07:55 CST |  Overcast Fog And Mist | 2°C / 36°F | 1°C / 34°F | 93% | 1011 mb (29.85 in) | Calm | - | 2 1/2SM |
| | KCMY 291355Z AUTO 00000KT 2 1/2SM BR BKN011 OVC018 02/01 A2986 RMK AO2 |
| 07:35 CST |  Overcast Fog And Mist | 0°C / 32°F | 0°C / 32°F | 100% | 1011 mb (29.85 in) | Calm | - | 4SM |
| | KCMY 291335Z AUTO 00000KT 4SM BR SCT011 OVC018 00/00 A2986 RMK AO2 |
| 07:15 CST |  Overcast Fog And Mist | 0°C / 32°F | 0°C / 32°F | 100% | 1011 mb (29.85 in) | Calm | - | 4SM |
| | KCMY 291315Z AUTO 00000KT 4SM BR BKN018 BKN035 OVC075 00/00 A2985 RMK AO2 |
| 06:55 CST |  Partly Cloudy Fog And Mist | 2°C / 36°F | 1°C / 34°F | 93% | 1011 mb (29.85 in) | Calm | - | 4SM |
| | KCMY 291255Z AUTO 00000KT 4SM BR SCT035 02/01 A2985 RMK AO2 |
| 06:35 CST |  Clear Fog And Mist | 2°C / 36°F | 1°C / 34°F | 93% | 1010 mb (29.83 in) | N 6 kph (N 3.5 mph) | - | 4SM |
| | KCMY 291235Z AUTO 01003KT 4SM BR CLR 02/01 A2983 RMK AO2 |
| 06:15 CST |  Clear Fog And Mist | 2°C / 36°F | 1°C / 34°F | 93% | 1010 mb (29.83 in) | NE 7 kph (NE 4.6 mph) | - | 4SM |
| | KCMY 291215Z AUTO 04004KT 4SM BR CLR 02/01 A2983 RMK AO2 |
| 05:55 CST |  Clear Fog And Mist | 2°C / 36°F | 1°C / 34°F | 93% | 1010 mb (29.83 in) | N 6 kph (N 3.5 mph) | - | 4SM |
| | KCMY 291155Z AUTO 36003KT 4SM BR CLR 02/01 A2984 RMK AO2 |
| 05:35 CST |  Clear Fog And Mist | 2°C / 36°F | 1°C / 34°F | 93% | 1010 mb (29.83 in) | N 6 kph (N 3.5 mph) | - | 4SM |
| | KCMY 291135Z AUTO 01003KT 4SM BR CLR 02/01 A2983 RMK AO2 |
| 05:15 CST |  Partly Cloudy Fog And Mist | 2°C / 36°F | 1°C / 34°F | 93% | 1010 mb (29.83 in) | N 9 kph (N 5.8 mph) | - | 5SM |
| | KCMY 291115Z AUTO 01005KT 5SM BR SCT046 02/01 A2983 RMK AO2 |
| 04:55 CST |  Clear Fog And Mist | 1°C / 34°F | 0°C / 32°F | 93% | 1010 mb (29.83 in) | NNE 6 kph (NNE 3.5 mph) | - | 4SM |
| | KCMY 291055Z AUTO 02003KT 4SM BR CLR 01/00 A2982 RMK AO2 |
| 04:35 CST |  Clear Fog And Mist | 0°C / 32°F | 0°C / 32°F | 100% | 1010 mb (29.83 in) | Calm | - | 4SM |
| | KCMY 291035Z AUTO 00000KT 4SM BR CLR 00/00 A2984 RMK AO2 |
| 04:15 CST |  Clear Fog And Mist | 0°C / 32°F | 0°C / 32°F | 100% | 1010 mb (29.83 in) | Calm | - | 4SM |
| | KCMY 291015Z AUTO 00000KT 4SM BR CLR 00/00 A2983 RMK AO2 |
| 03:55 CST |  Clear Fog And Mist | 0°C / 32°F | 0°C / 32°F | 100% | 1010 mb (29.83 in) | Calm | - | 4SM |
| | KCMY 290955Z AUTO 00000KT 4SM BR CLR 00/00 A2983 RMK AO2 |
| 03:35 CST |  Clear Fog And Mist | 1°C / 34°F | 1°C / 34°F | 100% | 1010 mb (29.83 in) | Calm | - | 4SM |
| | KCMY 290935Z AUTO 00000KT 4SM BR CLR 01/01 A2983 RMK AO2 |
| 03:15 CST |  Clear Fog And Mist | 0°C / 32°F | 0°C / 32°F | 100% | 1010 mb (29.83 in) | N 6 kph (N 3.5 mph) | - | 5SM |
| | KCMY 290915Z AUTO 01003KT 5SM BR CLR 00/00 A2982 RMK AO2 |
| 02:55 CST |  Clear Fog And Mist | 0°C / 32°F | -1°C / 30°F | 93% | 1010 mb (29.83 in) | Calm | - | 4SM |
| | KCMY 290855Z AUTO 00000KT 4SM BR CLR 00/M01 A2983 RMK AO2 |
| 02:35 CST |  Clear | 0°C / 32°F | -1°C / 30°F | 93% | 1010 mb (29.83 in) | Calm | - | 7SM |
| | KCMY 290835Z AUTO 00000KT 7SM CLR 00/M01 A2982 RMK AO2 |
| 02:15 CST |  Clear | 0°C / 32°F | -1°C / 30°F | 93% | 1010 mb (29.83 in) | Calm | - | 7SM |
| | KCMY 290815Z AUTO 00000KT 7SM CLR 00/M01 A2982 RMK AO2 |
| 01:55 CST |  Clear Fog And Mist | 0°C / 32°F | -1°C / 30°F | 93% | 1010 mb (29.83 in) | Calm | - | 4SM |
| | KCMY 290755Z AUTO 00000KT 4SM BR CLR 00/M01 A2983 RMK AO2 |
| 01:35 CST |  Clear Fog And Mist | 0°C / 32°F | -1°C / 30°F | 93% | 1010 mb (29.83 in) | Calm | - | 5SM |
| | KCMY 290735Z AUTO 00000KT 5SM BR CLR 00/M01 A2982 RMK AO2 |
| 01:15 CST |  Clear | -1°C / 30°F | -1°C / 30°F | 100% | 1010 mb (29.83 in) | Calm | - | 7SM |
| | KCMY 290715Z AUTO 00000KT 7SM CLR M01/M01 A2982 RMK AO2 |
| 00:55 CST |  Clear | 0°C / 32°F | -1°C / 30°F | 93% | 1010 mb (29.83 in) | Calm | - | 7SM |
| | KCMY 290655Z AUTO 00000KT 7SM CLR 00/M01 A2982 RMK AO2 |
| 00:35 CST |  Clear Fog And Mist | 0°C / 32°F | -1°C / 30°F | 93% | 1010 mb (29.83 in) | Calm | - | 5SM |
| | KCMY 290635Z AUTO 00000KT 5SM BR CLR 00/M01 A2982 RMK AO2 |
| 00:15 CST |  Clear | 0°C / 32°F | -1°C / 30°F | 93% | 1010 mb (29.83 in) | Calm | - | 7SM |
| | KCMY 290615Z AUTO 00000KT 7SM CLR 00/M01 A2982 RMK AO2 |