Is there a Metro-North station in Somers? What is the commute to NYC like?

Most Somers residents commute from Metro North (Harlem Line) in Goldens Bridge. There is more available parking. The website for Goldens Bridge train station: http://as0.mta.info/mnr/stations/station_detail.cfm?key=156. An example of the train schedule as of 7/17/12 per Metro North:
Departs Goldens Bridge: 8:05 AM Arrives Grand Central: 9:12 AM In Minutes: 67 THROUGH TRAIN PEAK
Departs: 8:26 AM Arrives: 9:30 AM Minutes: 64 THROUGH TRAIN PEAK
Departs: 8:52 AM Arrives: 10:05 AM Minutes: 73 THROUGH TRAIN OFF PEAK
Departs: 9:28 AM Arrives: 10:38 AM Minutes: 70 THROUGH TRAIN OFF PEAK
Departs: 10:28 AM Arrives: 11:38 AM Minutes: 70 THROUGH TRAIN OFF PEAK
Departs: 11:28 AM Arrives: 12:38 PM Minutes: 70 THROUGH TRAIN OFF PEAK
Departs: 12:28 PM Arrives: 1:39 PM Minutes: 71 THROUGH TRAIN OFF PEAK
Departs: 1:28 PM Arrives: 2:38 PM Minutes: 70 THROUGH TRAIN OFF PEAK

If you're an early riser/commuter, you can drive to katonah and find a space in the non-resident lot. About a five minute walk to the train, a couple more if you stop to pick up coffee etc at William Nicholas or Noka Jo. The peak time commute from Katonah is about 60 mins. If you commute from Goldens Bridge, be sure to take the peak time Express, it shortens the ridefrom GB to about 60 mins.

No, but there are two nearby: one in Croton Falls and one in Golden's Bridge. The commute time is about 77-79 minutes from Croton Falls and 70-72 minutes from Golden's Bridge.