  Nonlocal gravity (NLG) is a classical nonlocal generalization of Einstein's
theory of gravitation developed in close analogy with the nonlocal
electrodynamics of media. It appears that the nonlocal aspect of the universal
gravitational interaction could simulate dark matter. Within the Newtonian
regime of NLG, we investigate the deviation of the gravitational force from the
Newtonian inverse square law as a consequence of the existence of the effective
dark matter. In particular, we work out the magnitude of this deviation in the
solar system out to 100 astronomical units. Moreover, we give an improved lower
limit for the short-range parameter of the reciprocal kernel of NLG.
