The METAR's bracketing the time that N631S and I departed were these:
KDCA 261152Z 10006KT 8SM -RA OVC009 12/09 A2936 RMK AO2 RAB49 SLP941 PCPN VRY LGT P0000 T01220094
KDCA 261052Z 07005KT 10SM OVC008 12/10 A2935 RMK AO2 SLP938 T01220100
We were in the clear between layers by about 2,000 feet and only found a bit of rain over central New Jersey.
The New York Approach controller vectored me for the ILS to Runway 6 at KBDR without my asking, but the visual approach would have been perfectly feasible. Here's the KBDR weather for around the arrival:
KBDR 261352Z 05008KT 10SM OVC041 12/08 A2936 RMK AO2 SLP940 T01170083
KBDR 261252Z 02009KT 10SM FEW011 OVC041 11/09 A2936 RMK AO2 SLP943 T01110089
By about an hour later, it was raining and the ceiling was coming down. Sometimes timing is everything.