| 20:51 EST |  Mostly Cloudy | 2°C / 36°F | -2°C / 28°F | 75% | 1025 mb (30.27 in) | Calm | - | 10SM |
| | KRDU 240151Z 00000KT 10SM BKN250 02/M02 A3026 RMK AO2 SLP252 T00171017 |
| 19:51 EST |  Mostly Cloudy | 3°C / 37°F | -1°C / 30°F | 75% | 1025 mb (30.27 in) | Calm | - | 10SM |
| | KRDU 240051Z 00000KT 10SM BKN250 03/M01 A3026 RMK AO2 SLP249 T00281006 |
| 18:51 EST |  Mostly Cloudy | 4°C / 39°F | -1°C / 30°F | 70% | 1025 mb (30.27 in) | Calm | - | 10SM |
| | KRDU 232351Z 00000KT 10SM BKN250 04/M01 A3026 RMK AO2 SLP249 T00441011 10117 20044 53003 |
| 17:51 EST |  Mostly Cloudy | 6°C / 43°F | -1°C / 30°F | 61% | 1024 mb (30.24 in) | Calm | - | 10SM |
| | KRDU 232251Z 00000KT 10SM FEW180 BKN250 06/M01 A3025 RMK AO2 SLP247 T00611011 |
| 16:51 EST |  Mostly Cloudy | 9°C / 48°F | -1°C / 30°F | 50% | 1024 mb (30.24 in) | Calm | - | 10SM |
| | KRDU 232151Z 00000KT 10SM FEW180 BKN250 09/M01 A3024 RMK AO2 SLP244 T00941011 |
| 15:51 EST |  Mostly Cloudy | 10°C / 50°F | -1°C / 30°F | 47% | 1024 mb (30.24 in) | Calm | - | 10SM |
| | KRDU 232051Z 00000KT 10SM FEW180 BKN250 10/M01 A3025 RMK AO2 SLP244 T01001011 55003 |
| 14:51 EST |  Partly Cloudy | 12°C / 54°F | -2°C / 28°F | 38% | 1024 mb (30.24 in) | SW 9 kph (SW 5.8 mph) | - | 10SM |
| | KRDU 231951Z 23005KT 10SM FEW180 SCT250 12/M02 A3023 RMK AO2 SLP238 T01171017 |
| 13:51 EST |  Partly Cloudy | 11°C / 52°F | -2°C / 28°F | 41% | 1024 mb (30.24 in) | Calm | - | 10SM |
| | KRDU 231851Z 00000KT 10SM FEW180 SCT250 11/M02 A3024 RMK AO2 SLP242 T01061017 |
| 12:51 EST |  Mostly Cloudy | 10°C / 50°F | -1°C / 30°F | 47% | 1025 mb (30.27 in) | Calm | - | 10SM |
| | KRDU 231751Z 00000KT 10SM FEW180 BKN250 10/M01 A3026 RMK AO2 SLP247 T01001011 10100 21039 58023 $ |
| 11:51 EST |  Mostly Cloudy | 8°C / 46°F | -2°C / 28°F | 50% | 1025 mb (30.27 in) | Calm | - | 10SM |
| | KRDU 231651Z 00000KT 10SM FEW180 BKN250 08/M02 A3028 RMK AO2 SLP257 T00831017 $ |
| 10:51 EST |  Partly Cloudy | 7°C / 45°F | -2°C / 28°F | 53% | 1026 mb (30.3 in) | ESE 6 kph (ESE 3.5 mph) | - | 10SM |
| | KRDU 231551Z 11003KT 10SM SCT250 07/M02 A3031 RMK AO2 SLP267 T00671017 $ |
| 09:51 EST |  Partly Cloudy | 5°C / 41°F | -1°C / 30°F | 66% | 1027 mb (30.33 in) | Calm | - | 10SM |
| | KRDU 231451Z 00000KT 10SM FEW250 05/M01 A3032 RMK AO2 SLP271 T00501011 53017 $ |
| 08:51 EST |  Partly Cloudy | 0°C / 32°F | -2°C / 28°F | 87% | 1026 mb (30.3 in) | Calm | - | 7SM |
| | KRDU 231351Z 00000KT 7SM SCT250 00/M02 A3030 RMK AO2 SLP263 T00001017 $ |
| 07:51 EST |  Partly Cloudy | -3°C / 27°F | -4°C / 25°F | 93% | 1026 mb (30.3 in) | Calm | - | 7SM |
| | KRDU 231251Z 00000KT 7SM FEW250 M03/M04 A3029 RMK AO2 SLP262 T10281044 $ |
| 06:51 EST |  Partly Cloudy | -3°C / 27°F | -4°C / 25°F | 93% | 1025 mb (30.27 in) | Calm | - | 10SM |
| | KRDU 231151Z 00000KT 10SM SCT250 M03/M04 A3027 RMK AO2 SLP255 T10331044 11011 21033 53006 $ |
| 05:51 EST |  Mostly Cloudy | -3°C / 27°F | -4°C / 25°F | 93% | 1025 mb (30.27 in) | Calm | - | 10SM |
| | KRDU 231051Z 00000KT 10SM BKN250 M03/M04 A3026 RMK AO2 SLP251 T10281044 $ |
| 04:51 EST |  Mostly Cloudy | -2°C / 28°F | -4°C / 25°F | 86% | 1025 mb (30.27 in) | Calm | - | 10SM |
| | KRDU 230951Z 00000KT 10SM BKN250 M02/M04 A3026 RMK AO2 SLP249 T10221044 $ |
| 03:51 EST |  Mostly Cloudy | -2°C / 28°F | -4°C / 25°F | 86% | 1025 mb (30.27 in) | Calm | - | 10SM |
| | KRDU 230851Z 00000KT 10SM BKN250 M02/M04 A3026 RMK AO2 SLP248 T10221039 53004 $ |
| 02:51 EST |  Mostly Cloudy | -2°C / 28°F | -3°C / 27°F | 93% | 1024 mb (30.24 in) | Calm | - | 10SM |
| | KRDU 230751Z 00000KT 10SM BKN250 M02/M03 A3025 RMK AO2 SLP247 T10171033 $ |
| 01:51 EST |  Partly Cloudy | -1°C / 30°F | -3°C / 27°F | 86% | 1024 mb (30.24 in) | Calm | - | 10SM |
| | KRDU 230651Z 00000KT 10SM SCT250 M01/M03 A3025 RMK AO2 SLP245 T10111033 $ |
| 00:51 EST |  Partly Cloudy | -1°C / 30°F | -4°C / 25°F | 80% | 1024 mb (30.24 in) | Calm | - | 10SM |
| | KRDU 230551Z 00000KT 10SM SCT250 M01/M04 A3024 RMK AO2 SLP244 6//// T10111039 10033 21017 58004 PNO $ |