| 13:51 EST |  Mostly Cloudy | 5°C / 41°F | -3°C / 27°F | 57% | 1026 mb (30.3 in) | Calm | - | 10SM |
| | KRDU 061851Z 00000KT 10SM BKN250 05/M03 A3030 RMK AO2 SLP263 T00501033 $ |
| 12:51 EST |  Mostly Cloudy | 5°C / 41°F | -4°C / 25°F | 53% | 1027 mb (30.33 in) | Variable 7 kph (Variable 4.6 mph) | - | 10SM |
| | KRDU 061751Z VRB04KT 10SM BKN250 05/M04 A3033 RMK AO2 SLP272 6//// T00501039 10056 21022 58015 $ |
| 11:51 EST |  Mostly Cloudy | 4°C / 39°F | -3°C / 27°F | 61% | 1027 mb (30.33 in) | Variable 9 kph (Variable 5.8 mph) | - | 10SM |
| | KRDU 061651Z VRB05KT 10SM BKN250 04/M03 A3034 RMK AO2 SLP275 T00441028 $ |
| 10:51 EST |  Mostly Cloudy | 4°C / 39°F | -3°C / 27°F | 61% | 1028 mb (30.36 in) | NE 17 kph (NE 10.4 mph) | - | 10SM |
| | KRDU 061551Z 05009KT 10SM BKN250 04/M03 A3036 RMK AO2 SLP284 T00391033 $ |
| 09:51 EST |  Partly Cloudy | 2°C / 36°F | -3°C / 27°F | 70% | 1028 mb (30.36 in) | N 13 kph (N 8.1 mph) | - | 10SM |
| | KRDU 061451Z 01007KT 10SM SCT250 02/M03 A3037 RMK AO2 SLP287 6//// T00221033 51022 $ |
| 08:51 EST |  Partly Cloudy | 1°C / 34°F | -3°C / 27°F | 75% | 1028 mb (30.36 in) | Variable 6 kph (Variable 3.5 mph) | - | 10SM |
| | KRDU 061351Z VRB03KT 10SM SCT250 01/M03 A3036 RMK AO2 SLP282 T00111033 PNO $ |
| 07:51 EST |  Partly Cloudy | -1°C / 30°F | -2°C / 28°F | 93% | 1027 mb (30.33 in) | Calm | - | 8SM |
| | KRDU 061251Z 00000KT 8SM SCT250 M01/M02 A3034 RMK AO2 SLP275 T10111022 $ |
| 06:51 EST |  Partly Cloudy Fog | -2°C / 28°F | -3°C / 27°F | 93% | 1026 mb (30.3 in) | Calm | - | 7SM |
| | KRDU 061151Z 00000KT 7SM BCFG FEW035 SCT250 M02/M03 A3030 RMK AO2 SLP265 T10221033 10017 21022 53024 $ |
| 05:51 EST |  Partly Cloudy Fog | -2°C / 28°F | -3°C / 27°F | 93% | 1025 mb (30.27 in) | Calm | - | 7SM |
| | KRDU 061051Z 00000KT 7SM BCFG FEW035 SCT250 M02/M03 A3028 RMK AO2 SLP257 T10171033 $ |
| 04:51 EST |  Partly Cloudy Fog | -2°C / 28°F | -3°C / 27°F | 93% | 1024 mb (30.24 in) | Calm | - | 6SM |
| | KRDU 060951Z 00000KT 6SM BCFG BR FEW035 SCT250 M02/M03 A3025 RMK AO2 SLP248 T10171028 $ |
| 03:51 EST |  Partly Cloudy | -1°C / 30°F | -2°C / 28°F | 93% | 1024 mb (30.24 in) | Calm | - | 10SM |
| | KRDU 060851Z 00000KT 10SM FEW035 SCT250 M01/M02 A3023 RMK AO2 SLP240 T10061022 53027 $ |
| 02:51 EST |  Partly Cloudy | 1°C / 34°F | -2°C / 28°F | 81% | 1023 mb (30.21 in) | Calm | - | 10SM |
| | KRDU 060751Z 00000KT 10SM FEW035 SCT250 01/M02 A3020 RMK AO2 SLP228 T00061022 $ |
| 01:51 EST |  Mostly Cloudy | 2°C / 36°F | -1°C / 30°F | 81% | 1022 mb (30.18 in) | Calm | - | 10SM |
| | KRDU 060651Z 00000KT 10SM BKN034 BKN250 02/M01 A3018 RMK AO2 SLP221 T00171006 $ |
| 00:51 EST |  Mostly Cloudy | 2°C / 36°F | 0°C / 32°F | 87% | 1021 mb (30.15 in) | Calm | - | 10SM |
| | KRDU 060551Z 00000KT 10SM BKN035 BKN250 02/00 A3015 RMK AO2 SLP211 T00170000 10039 20011 53015 $ |