| 10:16 CST |  Overcast | 0°C / 32°F | -4°C / 25°F | 75% | 1017 mb (30.03 in) | NW 22 kph (NW 13.8 mph) | - | 10SM |
| | KSYN 261616Z AUTO 30012KT 10SM OVC019 00/M04 A3004 RMK AO2 T00021036 |
| 09:56 CST |  Overcast | 0°C / 32°F | -4°C / 25°F | 75% | 1017 mb (30.03 in) | NW 24 kph (NW 15 mph) | - | 10SM |
| | KSYN 261556Z AUTO 32013KT 10SM OVC019 00/M04 A3003 RMK AO2 T00021037 |
| 09:36 CST |  Overcast | 0°C / 32°F | -4°C / 25°F | 75% | 1017 mb (30.03 in) | NW 24 kph (NW 15 mph) | - | 10SM |
| | KSYN 261536Z AUTO 30013KT 10SM OVC019 00/M04 A3004 RMK AO2 T00021036 |
| 09:16 CST |  Overcast | 0°C / 32°F | -3°C / 27°F | 80% | 1017 mb (30.03 in) | NW 22 kph (NW 13.8 mph) | - | 10SM |
| | KSYN 261516Z AUTO 32012KT 10SM OVC019 00/M03 A3003 RMK AO2 T00031031 |
| 08:56 CST |  Overcast | 0°C / 32°F | -3°C / 27°F | 80% | 1017 mb (30.03 in) | NNW 22 kph (NNW 13.8 mph) | - | 10SM |
| | KSYN 261456Z AUTO 33012KT 10SM OVC021 00/M03 A3003 RMK AO2 T00031033 |
| 08:36 CST |  Overcast | 0°C / 32°F | -3°C / 27°F | 80% | 1017 mb (30.03 in) | NW 17 kph (NW 10.4 mph) | - | 10SM |
| | KSYN 261436Z AUTO 32009KT 10SM OVC021 00/M03 A3003 RMK AO2 T00031033 |
| 08:15 CST |  Overcast | 0°C / 32°F | -3°C / 27°F | 80% | 1017 mb (30.03 in) | NW 19 kph (NW 11.5 mph) | - | 10SM |
| | KSYN 261415Z AUTO 32010KT 10SM OVC021 00/M03 A3003 RMK AO2 T00031031 |
| 07:56 CST |  Overcast | 0°C / 32°F | -3°C / 27°F | 80% | 1017 mb (30.03 in) | NW 22 kph (NW 13.8 mph) | - | 10SM |
| | KSYN 261356Z AUTO 32012KT 10SM OVC021 00/M03 A3003 RMK AO2 T00031033 |
| 07:36 CST |  Overcast | 1°C / 34°F | -3°C / 27°F | 75% | 1017 mb (30.03 in) | NW 22 kph (NW 13.8 mph) | - | 10SM |
| | KSYN 261336Z AUTO 32012KT 10SM OVC021 01/M03 A3002 RMK AO2 T00051031 |
| 07:15 CST |  Overcast | 1°C / 34°F | -3°C / 27°F | 75% | 1017 mb (30.03 in) | NW 22 kph (NW 13.8 mph) | - | 10SM |
| | KSYN 261315Z AUTO 32012KT 10SM OVC021 01/M03 A3002 RMK AO2 T00051031 |
| 06:56 CST |  Overcast | 1°C / 34°F | -3°C / 27°F | 75% | 1016 mb (30 in) | NW 22 kph (NW 13.8 mph) | - | 10SM |
| | KSYN 261256Z AUTO 32012G15KT 10SM OVC021 01/M03 A3001 RMK AO2 T00051032 |
| 06:36 CST |  Overcast | 1°C / 34°F | -3°C / 27°F | 75% | 1016 mb (30 in) | NW 22 kph (NW 13.8 mph) | - | 10SM |
| | KSYN 261236Z AUTO 31012G16KT 10SM OVC021 01/M03 A3001 RMK AO2 T00051030 |
| 06:16 CST |  Overcast | 1°C / 34°F | -3°C / 27°F | 75% | 1016 mb (30 in) | NW 17 kph (NW 10.4 mph) | - | 10SM |
| | KSYN 261216Z AUTO 31009KT 10SM OVC021 01/M03 A3001 RMK AO2 T00051030 |
| 05:56 CST |  Overcast | 1°C / 34°F | -3°C / 27°F | 75% | 1016 mb (30 in) | NW 15 kph (NW 9.2 mph) | - | 10SM |
| | KSYN 261156Z AUTO 31008KT 10SM OVC021 01/M03 A3000 RMK AO2 70011 T00061027 10026 20006 |
| 05:36 CST |  Overcast | 1°C / 34°F | -3°C / 27°F | 75% | 1016 mb (30 in) | NNW 20 kph (NNW 12.7 mph) | - | 10SM |
| | KSYN 261136Z AUTO 33011KT 10SM OVC021 01/M03 A3000 RMK AO2 T00061031 |
| 05:16 CST |  Overcast | 1°C / 34°F | -3°C / 27°F | 75% | 1016 mb (30 in) | NNW 24 kph (NNW 15 mph) | - | 10SM |
| | KSYN 261116Z AUTO 33013KT 10SM OVC021 01/M03 A2999 RMK AO2 T00061032 |
| 04:56 CST |  Overcast | 1°C / 34°F | -3°C / 27°F | 75% | 1016 mb (30 in) | NW 26 kph (NW 16.1 mph) | - | 10SM |
| | KSYN 261056Z AUTO 32014KT 10SM OVC021 01/M03 A2999 RMK AO2 T00081028 |
| 04:36 CST |  Overcast | 1°C / 34°F | -3°C / 27°F | 75% | 1016 mb (30 in) | NNW 19 kph (NNW 11.5 mph) | - | 10SM |
| | KSYN 261036Z AUTO 33010KT 10SM OVC021 01/M03 A2999 RMK AO2 T00081027 |
| 04:15 CST |  Overcast | 1°C / 34°F | -3°C / 27°F | 75% | 1016 mb (30 in) | NNW 17 kph (NNW 10.4 mph) | - | 10SM |
| | KSYN 261015Z AUTO 34009KT 10SM OVC021 01/M03 A2999 RMK AO2 T00101026 |
| 03:56 CST |  Overcast | 1°C / 34°F | -3°C / 27°F | 75% | 1015 mb (29.97 in) | NNW 19 kph (NNW 11.5 mph) | - | 10SM |
| | KSYN 260956Z AUTO 34010KT 10SM OVC021 01/M03 A2998 RMK AO2 T00111026 |
| 03:35 CST |  Overcast | 1°C / 34°F | -2°C / 28°F | 81% | 1015 mb (29.97 in) | NNW 15 kph (NNW 9.2 mph) | - | 10SM |
| | KSYN 260935Z AUTO 33008KT 10SM OVC021 01/M02 A2998 RMK AO2 T00111023 |
| 03:16 CST |  Overcast | 1°C / 34°F | -3°C / 27°F | 75% | 1016 mb (30 in) | NNW 22 kph (NNW 13.8 mph) | - | 10SM |
| | KSYN 260916Z AUTO 33012KT 10SM OVC023 01/M03 A2999 RMK AO2 T00121026 |
| 02:56 CST |  Overcast | 1°C / 34°F | -3°C / 27°F | 75% | 1015 mb (29.97 in) | NNW 28 kph (NNW 17.3 mph) | - | 10SM |
| | KSYN 260856Z AUTO 34015G21KT 10SM OVC021 01/M03 A2998 RMK AO2 T00131026 |
| 02:36 CST |  Overcast | 1°C / 34°F | -2°C / 28°F | 81% | 1015 mb (29.97 in) | NNW 20 kph (NNW 12.7 mph) | - | 10SM |
| | KSYN 260836Z AUTO 33011G17KT 10SM OVC021 01/M02 A2998 RMK AO2 T00141019 |
| 02:16 CST |  Overcast | 2°C / 36°F | -2°C / 28°F | 75% | 1015 mb (29.97 in) | NW 26 kph (NW 16.1 mph) | - | 10SM |
| | KSYN 260816Z AUTO 32014KT 10SM OVC021 02/M02 A2998 RMK AO2 T00151018 |
| 01:56 CST |  Overcast | 2°C / 36°F | -2°C / 28°F | 75% | 1015 mb (29.97 in) | NW 20 kph (NW 12.7 mph) | - | 10SM |
| | KSYN 260756Z AUTO 32011G18KT 10SM OVC021 02/M02 A2998 RMK AO2 T00171017 |
| 01:36 CST |  Overcast | 2°C / 36°F | -1°C / 30°F | 81% | 1015 mb (29.97 in) | NW 24 kph (NW 15 mph) | - | 10SM |
| | KSYN 260736Z AUTO 32013KT 10SM OVC021 02/M01 A2997 RMK AO2 T00181015 |
| 01:16 CST |  Overcast | 2°C / 36°F | -1°C / 30°F | 81% | 1015 mb (29.97 in) | NW 20 kph (NW 12.7 mph) | - | 10SM |
| | KSYN 260716Z AUTO 32011KT 10SM OVC021 02/M01 A2997 RMK AO2 T00201010 |
| 00:56 CST |  Overcast | 2°C / 36°F | -1°C / 30°F | 81% | 1015 mb (29.97 in) | NW 24 kph (NW 15 mph) | - | 10SM |
| | KSYN 260656Z AUTO 32013G18KT 10SM OVC023 02/M01 A2996 RMK AO2 T00241010 |
| 00:35 CST |  Overcast | 3°C / 37°F | -1°C / 30°F | 75% | 1015 mb (29.97 in) | NNW 20 kph (NNW 12.7 mph) | - | 10SM |
| | KSYN 260635Z AUTO 33011G21KT 10SM OVC023 03/M01 A2996 RMK AO2 T00251012 |
| 00:16 CST |  Overcast | 3°C / 37°F | -1°C / 30°F | 75% | 1014 mb (29.94 in) | NNW 19 kph (NNW 11.5 mph) | - | 10SM |
| | KSYN 260616Z AUTO 33010G15KT 10SM OVC025 03/M01 A2995 RMK AO2 T00251007 |