| 04:51 CST |  Overcast | 4°C / 39°F | -1°C / 30°F | 70% | 1019 mb (30.09 in) | NNW 13 kph (NNW 8.1 mph) | - | 10SM |
| | KSTL 301051Z 33007KT 10SM OVC040 04/M01 A3008 RMK AO2 SLP189 T00441006 |
| 03:51 CST |  Overcast | 4°C / 39°F | -1°C / 30°F | 70% | 1018 mb (30.06 in) | NNW 17 kph (NNW 10.4 mph) | - | 10SM |
| | KSTL 300951Z 33009KT 10SM OVC038 04/M01 A3006 RMK AO2 SLP182 T00441011 |
| 02:51 CST |  Overcast | 5°C / 41°F | -1°C / 30°F | 66% | 1018 mb (30.06 in) | NNW 22 kph (NNW 13.8 mph) | - | 10SM |
| | KSTL 300851Z 34012KT 10SM OVC034 05/M01 A3005 RMK AO2 SLP180 T00501011 53008 |
| 01:51 CST |  Overcast | 5°C / 41°F | -1°C / 30°F | 66% | 1017 mb (30.03 in) | NNW 20 kph (NNW 12.7 mph) | - | 10SM |
| | KSTL 300751Z 34011KT 10SM OVC030 05/M01 A3004 RMK AO2 SLP174 T00501011 |
| 01:41 CST |  Overcast | 5°C / 41°F | -1°C / 30°F | 66% | 1017 mb (30.03 in) | NNW 20 kph (NNW 12.7 mph) | - | 10SM |
| | KSTL 300741Z 34011G17KT 10SM OVC030 05/M01 A3004 RMK AO2 |
| 00:51 CST |  Overcast | 5°C / 41°F | -1°C / 30°F | 66% | 1017 mb (30.03 in) | N 20 kph (N 12.7 mph) | - | 10SM |
| | KSTL 300651Z 35011KT 10SM OVC025 05/M01 A3002 RMK AO2 SLP167 T00501006 |