The deadlines for most are past but there are some out there still looking for outstanding students like yourself, so keep searching!
Summer Medical and Dental Education Program (SMDEP) is a FREE (full tuition, housing, and meals) six-week summer academic enrichment program that offers freshman and sophomore college students intensive and personalized medical and dental school preparation.
Application deadline March 1st.
Building Diversity in Biomedical Sciences (BDBS) for Undergraduates at Tufts University
The BDBS summer research program is designed to provide undergraduates with hands-on, mentored research experience. Participants also receive career advice and participate in organized career exploration and social activities.
Application deadline February 15th.
The Following sites have a number of research programs listed, some are organized by states and/or state.
http://services.aamc.org/summerprograms/getprogs.cfm (with this one you can actually do a search by state)