| 04:52 EST |  Clear | -1°C / 30°F | -7°C / 19°F | 64% | 1023 mb (30.21 in) | NW 13 kph (NW 8.1 mph) | - | 10SM |
| | KDCA 060952Z 31007G15KT 10SM CLR M01/M07 A3022 RMK AO2 SLP233 T10061067 |
| 03:52 EST |  Clear | 0°C / 32°F | -6°C / 21°F | 64% | 1023 mb (30.21 in) | NW 20 kph (NW 12.7 mph) | - | 10SM |
| | KDCA 060852Z 30011KT 10SM CLR 00/M06 A3021 RMK AO2 SLP229 T00001056 52027 |
| 02:52 EST |  Clear | 0°C / 32°F | -6°C / 21°F | 64% | 1022 mb (30.18 in) | NW 22 kph (NW 13.8 mph) | - | 10SM |
| | KDCA 060752Z 31012G18KT 10SM CLR 00/M06 A3019 RMK AO2 SLP222 T00001056 |
| 01:52 EST |  Clear | 0°C / 32°F | -5°C / 23°F | 69% | 1021 mb (30.15 in) | NNW 20 kph (NNW 12.7 mph) | - | 10SM |
| | KDCA 060652Z 33011KT 10SM CLR 00/M05 A3015 RMK AO2 SLP209 T00001050 |
| 00:52 EST |  Clear | 1°C / 34°F | -4°C / 25°F | 70% | 1020 mb (30.12 in) | NW 19 kph (NW 11.5 mph) | - | 10SM |
| | KDCA 060552Z 32010G18KT 10SM CLR 01/M04 A3013 RMK AO2 SLP202 931000 60000 T00061044 10022 20006 51024 |