| 05:35 CST |  Overcast Fog And Mist | -2°C / 28°F | -2°C / 28°F | 100% | 1012 mb (29.88 in) | NNE 20 kph (NNE 12.7 mph) | - | 3SM |
| | KHLC 221135Z AUTO 02011KT 3SM BR OVC001 M02/M02 A2989 RMK AO2 |
| 05:23 CST |  Overcast Fog And Mist | -2°C / 28°F | -2°C / 28°F | 100% | 1012 mb (29.88 in) | NNE 15 kph (NNE 9.2 mph) | - | 1 3/4SM |
| | KHLC 221123Z AUTO 02008KT 1 3/4SM BR OVC001 M02/M02 A2989 RMK AO2 |
| 04:53 CST |  Overcast Fog And Mist | -2°C / 28°F | -2°C / 28°F | 100% | 1012 mb (29.88 in) | N 11 kph (N 6.9 mph) | - | 4SM |
| | KHLC 221053Z AUTO 01006KT 4SM BR OVC001 M02/M02 A2989 RMK AO2 SLP134 T10171017 |
| 04:27 CST |  Overcast Fog And Mist | -2°C / 28°F | -2°C / 28°F | 100% | 1012 mb (29.88 in) | N 13 kph (N 8.1 mph) | - | 3SM |
| | KHLC 221027Z AUTO 01007KT 3SM BR OVC001 M02/M02 A2989 RMK AO2 |
| 03:53 CST |  Overcast Fog And Mist | -2°C / 28°F | -2°C / 28°F | 100% | 1012 mb (29.88 in) | N 15 kph (N 9.2 mph) | - | 2 1/2SM |
| | KHLC 220953Z AUTO 01008KT 2 1/2SM BR OVC001 M02/M02 A2989 RMK AO2 SLP131 T10171017 |
| 03:34 CST |  Overcast Fog And Mist | -2°C / 28°F | -2°C / 28°F | 100% | 1012 mb (29.88 in) | NNE 7 kph (NNE 4.6 mph) | - | 2 1/2SM |
| | KHLC 220934Z AUTO 02004KT 2 1/2SM BR OVC001 M02/M02 A2989 RMK AO2 |
| 03:13 CST |  Overcast Fog And Mist | -2°C / 28°F | -2°C / 28°F | 100% | 1012 mb (29.88 in) | N 19 kph (N 11.5 mph) | - | 5SM |
| | KHLC 220913Z AUTO 01010KT 5SM BR OVC003 M02/M02 A2988 RMK AO2 CIG 001V006 |
| 02:53 CST |  Mostly Cloudy | -2°C / 28°F | -3°C / 27°F | 93% | 1012 mb (29.88 in) | NNE 9 kph (NNE 5.8 mph) | - | 10SM |
| | KHLC 220853Z AUTO 02005KT 10SM BKN008 M02/M03 A2988 RMK AO2 SLP129 T10171028 51012 |
| 02:43 CST |  Partly Cloudy | -1°C / 30°F | -3°C / 27°F | 86% | 1012 mb (29.88 in) | N 11 kph (N 6.9 mph) | - | 10SM |
| | KHLC 220843Z AUTO 01006KT 10SM SCT008 M01/M03 A2988 RMK AO2 |
| 01:53 CST |  Clear | 0°C / 32°F | -2°C / 28°F | 87% | 1011 mb (29.85 in) | NNW 7 kph (NNW 4.6 mph) | - | 10SM |
| | KHLC 220753Z AUTO 34004KT 10SM CLR 00/M02 A2986 RMK AO2 SLP122 T00001022 |
| 00:53 CST |  Clear | 1°C / 34°F | -1°C / 30°F | 87% | 1010 mb (29.83 in) | NNW 26 kph (NNW 16.1 mph) | - | 10SM |
| | KHLC 220653Z AUTO 34014KT 10SM CLR 01/M01 A2984 RMK AO2 SLP116 T00111011 |