| 18:52 EST |  Overcast Light Rain | 8°C / 46°F | 3°C / 37°F | 71% | 1010 mb (29.83 in) | NNW 22 kph (NNW 13.8 mph) | 0.00 mm (0.00 in) | 10SM |
| | KDCA 302352Z 33012KT 10SM -RA OVC046 08/03 A2982 RMK AO2 RAB34 SLP098 P0000 60011 T00830028 10117 20072 51026 |
| 17:52 EST |  Overcast | 8°C / 46°F | 3°C / 37°F | 71% | 1009 mb (29.8 in) | NNW 17 kph (NNW 10.4 mph) | 0.00 mm (0.00 in) | 10SM |
| | KDCA 302252Z 33009KT 10SM FEW036 OVC060 08/03 A2979 RMK AO2 RAE37 SLP086 P0000 T00780033 |
| 16:52 EST |  Overcast Light Rain | 8°C / 46°F | 4°C / 39°F | 76% | 1008 mb (29.77 in) | NNW 20 kph (NNW 12.7 mph) | 1.27 mm (0.05 in) | 10SM |
| | KDCA 302152Z 33011KT 10SM -RA BKN039 OVC050 08/04 A2978 RMK AO2 SLP084 P0005 T00780044 |
| 15:52 EST |  Overcast Light Rain | 9°C / 48°F | 5°C / 41°F | 76% | 1007 mb (29.74 in) | NNW 22 kph (NNW 13.8 mph) | 1.27 mm (0.05 in) | 10SM |
| | KDCA 302052Z 33012KT 10SM -RA SCT023 BKN039 OVC050 09/05 A2974 RMK AO2 SLP071 P0005 60006 T00890050 53024 |
| 15:40 EST |  Overcast Light Rain | 9°C / 48°F | 5°C / 41°F | 76% | 1007 mb (29.74 in) | NNW 24 kph (NNW 15 mph) | 1.02 mm (0.04 in) | 10SM |
| | KDCA 302040Z 33013KT 10SM -RA SCT023 BKN028 OVC046 09/05 A2974 RMK AO2 P0004 |
| 14:52 EST |  Overcast Light Rain | 10°C / 50°F | 6°C / 43°F | 76% | 1006 mb (29.71 in) | NW 20 kph (NW 12.7 mph) | 0.00 mm (0.00 in) | 9SM |
| | KDCA 301952Z 32011KT 9SM -RA FEW017 OVC036 10/06 A2971 RMK AO2 RAB11 SLP061 P0000 T01000056 |
| 14:16 EST |  Overcast Light Rain | 11°C / 52°F | 7°C / 45°F | 77% | 1005 mb (29.68 in) | NW 20 kph (NW 12.7 mph) | 0.00 mm (0.00 in) | 10SM |
| | KDCA 301916Z 32011G15KT 10SM -RA SCT017 OVC032 11/07 A2969 RMK AO2 RAB11 P0000 |
| 13:52 EST |  Overcast | 11°C / 52°F | 7°C / 45°F | 77% | 1005 mb (29.68 in) | NW 17 kph (NW 10.4 mph) | 0.25 mm (0.01 in) | 10SM |
| | KDCA 301852Z 31009G15KT 10SM SCT016 OVC027 11/07 A2968 RMK AO2 RAE41 SLP049 P0001 T01110072 |
| 13:30 EST |  Overcast Light Rain | 12°C / 54°F | 8°C / 46°F | 77% | 1005 mb (29.68 in) | NW 17 kph (NW 10.4 mph) | 0.25 mm (0.01 in) | 8SM |
| | KDCA 301830Z 32009G17KT 8SM -RA SCT016 BKN025 OVC045 12/08 A2968 RMK AO2 P0001 |
| 13:18 EST |  Overcast Light Rain | 12°C / 54°F | 8°C / 46°F | 77% | 1005 mb (29.68 in) | NW 9 kph (NW 5.8 mph) | 0.00 mm (0.00 in) | 8SM |
| | KDCA 301818Z 30005KT 8SM -RA BKN016 BKN040 OVC065 12/08 A2968 RMK AO2 P0000 |
| 12:52 EST |  Overcast Light Rain | 12°C / 54°F | 8°C / 46°F | 77% | 1005 mb (29.68 in) | Calm | 0.00 mm (0.00 in) | 10SM |
| | KDCA 301752Z 00000KT 10SM -RA SCT040 BKN055 OVC080 12/08 A2967 RMK AO2 RAB41 SLP047 P0000 60007 T01170083 10128 20106 58011 |
| 11:52 EST |  Overcast | 12°C / 54°F | 8°C / 46°F | 77% | 1005 mb (29.68 in) | SW 7 kph (SW 4.6 mph) | 0.76 mm (0.03 in) | 10SM |
| | KDCA 301652Z 23004KT 10SM SCT035 BKN055 OVC075 12/08 A2969 RMK AO2 RAE39 SLP053 P0003 T01170078 |
| 10:52 EST |  Overcast Light Rain | 12°C / 54°F | 7°C / 45°F | 72% | 1007 mb (29.74 in) | SSW 6 kph (SSW 3.5 mph) | 1.02 mm (0.04 in) | 6SM |
| | KDCA 301552Z 24003KT 6SM -RA SCT035 BKN065 OVC080 12/07 A2973 RMK AO2 RAB12 SLP066 P0004 T01220067 |
| 10:16 EST |  Overcast Light Rain | 12°C / 54°F | 6°C / 43°F | 67% | 1006 mb (29.71 in) | SW 9 kph (SW 5.8 mph) | 0.00 mm (0.00 in) | 7SM |
| | KDCA 301516Z 22005KT 7SM -RA OVC065 12/06 A2972 RMK AO2 RAB12 PRESRR P0000 |
| 09:52 EST |  Overcast | 12°C / 54°F | 6°C / 43°F | 67% | 1006 mb (29.71 in) | S 9 kph (S 5.8 mph) | - | 10SM |
| | KDCA 301452Z 18005KT 10SM BKN065 OVC085 12/06 A2970 RMK AO2 SLP058 BINOVC SE-S T01220061 58002 |
| 08:52 EST |  Overcast | 12°C / 54°F | 6°C / 43°F | 67% | 1006 mb (29.71 in) | S 13 kph (S 8.1 mph) | - | 10SM |
| | KDCA 301352Z 19007KT 10SM FEW085 SCT110 OVC150 12/06 A2971 RMK AO2 SLP062 T01170061 |
| 07:52 EST |  Overcast | 11°C / 52°F | 6°C / 43°F | 72% | 1006 mb (29.71 in) | S 15 kph (S 9.2 mph) | - | 10SM |
| | KDCA 301252Z 19008KT 10SM SCT085 SCT130 OVC160 11/06 A2972 RMK AO2 SLP063 T01110056 |
| 06:52 EST |  Mostly Cloudy | 11°C / 52°F | 6°C / 43°F | 72% | 1006 mb (29.71 in) | S 15 kph (S 9.2 mph) | - | 10SM |
| | KDCA 301152Z 18008KT 10SM FEW100 BKN130 BKN200 11/06 A2971 RMK AO2 SLP060 T01110056 10133 20111 58003 |
| 05:52 EST |  Mostly Cloudy | 12°C / 54°F | 6°C / 43°F | 67% | 1006 mb (29.71 in) | S 15 kph (S 9.2 mph) | - | 10SM |
| | KDCA 301052Z 18008KT 10SM BKN130 BKN200 12/06 A2971 RMK AO2 SLP061 T01170056 |
| 04:52 EST |  Mostly Cloudy | 12°C / 54°F | 6°C / 43°F | 67% | 1006 mb (29.71 in) | SSE 9 kph (SSE 5.8 mph) | - | 10SM |
| | KDCA 300952Z 20005KT 10SM BKN130 BKN200 12/06 A2972 RMK AO2 SLP063 T01170056 |
| 03:52 EST |  Overcast | 12°C / 54°F | 6°C / 43°F | 67% | 1006 mb (29.71 in) | S 11 kph (S 6.9 mph) | - | 10SM |
| | KDCA 300852Z 18006KT 10SM BKN130 OVC200 12/06 A2972 RMK AO2 SLP064 T01170056 58011 |
| 02:52 EST |  Overcast | 12°C / 54°F | 6°C / 43°F | 67% | 1007 mb (29.74 in) | SSE 7 kph (SSE 4.6 mph) | - | 10SM |
| | KDCA 300752Z 20004KT 10SM BKN130 OVC200 12/06 A2974 RMK AO2 SLP070 T01170056 |
| 01:52 EST |  Mostly Cloudy | 12°C / 54°F | 6°C / 43°F | 67% | 1007 mb (29.74 in) | S 13 kph (S 8.1 mph) | - | 10SM |
| | KDCA 300652Z 18007KT 10SM FEW110 BKN200 12/06 A2974 RMK AO2 SLP072 T01220056 |
| 00:52 EST |  Mostly Cloudy | 13°C / 55°F | 4°C / 39°F | 55% | 1007 mb (29.74 in) | S 9 kph (S 5.8 mph) | - | 10SM |
| | KDCA 300552Z 18005KT 10SM BKN110 BKN200 13/04 A2975 RMK AO2 SLP075 60000 T01330044 10156 20122 58017 |