| 06:15 EST |  Overcast | -8°C / 18°F | -9°C / 16°F | 93% | 1023 mb (30.21 in) | Calm | - | M1/4SM |
| | KEEN 081115Z AUTO M1/4SM OVC001 M08/M09 A3022 RMK AO1 |
| 05:55 EST |  Overcast | -8°C / 18°F | -9°C / 16°F | 93% | 1023 mb (30.21 in) | Calm | - | 1/4SM |
| | KEEN 081055Z AUTO 00000KT 1/4SM OVC002 M08/M09 A3020 RMK AO1 |
| 05:35 EST |  Overcast | -8°C / 18°F | -9°C / 16°F | 93% | 1023 mb (30.21 in) | Calm | - | 1/4SM |
| | KEEN 081035Z AUTO 00000KT 1/4SM OVC002 M08/M09 A3020 RMK AO1 |
| 05:15 EST |  Overcast | -7°C / 19°F | -9°C / 16°F | 86% | 1022 mb (30.18 in) | Calm | - | 1/4SM |
| | KEEN 081015Z AUTO 00000KT 1/4SM OVC002 M07/M09 A3019 RMK AO1 |
| 04:55 EST |  Overcast | -7°C / 19°F | -9°C / 16°F | 86% | 1022 mb (30.18 in) | Calm | - | 1 1/4SM |
| | KEEN 080955Z AUTO 00000KT 1 1/4SM OVC002 M07/M09 A3018 RMK AO1 |
| 04:35 EST |  Overcast | -7°C / 19°F | -8°C / 18°F | 93% | 1022 mb (30.18 in) | Calm | - | 1/2SM |
| | KEEN 080935Z AUTO 00000KT 1/2SM OVC002 M07/M08 A3017 RMK AO1 |
| 04:15 EST |  Overcast | -7°C / 19°F | -8°C / 18°F | 93% | 1021 mb (30.15 in) | Calm | - | 1/4SM |
| | KEEN 080915Z AUTO 00000KT 1/4SM OVC002 M07/M08 A3016 RMK AO1 |
| 03:55 EST |  Overcast | -7°C / 19°F | -8°C / 18°F | 93% | 1021 mb (30.15 in) | Calm | - | 1/4SM |
| | KEEN 080855Z AUTO 00000KT 1/4SM OVC003 M07/M08 A3015 RMK AO1 52017 |
| 03:35 EST |  Overcast | -7°C / 19°F | -9°C / 16°F | 86% | 1021 mb (30.15 in) | Calm | - | 6SM |
| | KEEN 080835Z AUTO 00000KT 6SM BKN003 OVC042 M07/M09 A3014 RMK AO1 |
| 03:15 EST |  Overcast | -7°C / 19°F | -9°C / 16°F | 86% | 1021 mb (30.15 in) | Calm | - | 5SM |
| | KEEN 080815Z AUTO 00000KT 5SM BKN002 BKN029 OVC042 M07/M09 A3014 RMK AO1 |
| 02:55 EST |  Overcast | -7°C / 19°F | -8°C / 18°F | 93% | 1020 mb (30.12 in) | Calm | - | 5SM |
| | KEEN 080755Z AUTO 00000KT 5SM BKN003 OVC029 M07/M08 A3013 RMK AO1 |
| 02:35 EST |  Overcast | -7°C / 19°F | -8°C / 18°F | 93% | 1020 mb (30.12 in) | Calm | - | 5SM |
| | KEEN 080735Z AUTO 00000KT 5SM OVC004 M07/M08 A3013 RMK AO1 |
| 02:15 EST |  Overcast | -6°C / 21°F | -7°C / 19°F | 93% | 1020 mb (30.12 in) | Calm | - | 5SM |
| | KEEN 080715Z AUTO 00000KT 5SM BKN005 OVC032 M06/M07 A3012 RMK AO1 |
| 01:55 EST |  Overcast | -7°C / 19°F | -8°C / 18°F | 93% | 1020 mb (30.12 in) | Calm | - | 4SM |
| | KEEN 080655Z AUTO 00000KT 4SM SCT002 OVC032 M07/M08 A3011 RMK AO1 |
| 01:35 EST |  Overcast | -6°C / 21°F | -7°C / 19°F | 93% | 1019 mb (30.09 in) | Calm | - | 1 1/2SM |
| | KEEN 080635Z AUTO 00000KT 1 1/2SM OVC002 M06/M07 A3010 RMK AO1 |
| 01:15 EST |  Overcast | -6°C / 21°F | -7°C / 19°F | 93% | 1019 mb (30.09 in) | Calm | - | 1/2SM |
| | KEEN 080615Z AUTO 00000KT 1/2SM OVC002 M06/M07 A3010 RMK AO1 |
| 00:55 EST |  Overcast | -7°C / 19°F | -7°C / 19°F | 100% | 1019 mb (30.09 in) | Calm | - | 3SM |
| | KEEN 080555Z AUTO 00000KT 3SM OVC002 M07/M07 A3010 RMK AO1 11020 21070 54000 |
| 00:35 EST |  Overcast | -7°C / 19°F | -8°C / 18°F | 93% | 1019 mb (30.09 in) | SSE 6 kph (SSE 3.5 mph) | - | 3SM |
| | KEEN 080535Z AUTO 20003KT 3SM OVC002 M07/M08 A3010 RMK AO1 |
| 00:15 EST |  Overcast | -6°C / 21°F | -7°C / 19°F | 93% | 1019 mb (30.09 in) | Calm | - | 1/2SM |
| | KEEN 080515Z AUTO 00000KT 1/2SM OVC002 M06/M07 A3010 RMK AO1 |