Setting 1-1/2 hours after the Sun on July 1, the smallest of the planets reaches greatest eastern elongation on July 11, when its angular separation east of the Sun is greatest, at 26 degrees. Then, it gradually retreats back into the twilight at about the end of July. Passing inferior conjunction on August 8, when it's between Earth and the Sun, it re-emerges in the predawn sky about a week later, and rises before the Sun, reaching a greatest western elongation of 18 degrees on August 26 (we explain why eastern and western elongations are different in Notes for the Season). After the 26th, Mercury scoots back into the Sun's glow, disappearing from view in early September, and reaches superior conjunction (passing behind the Sun) on September 20. For more on a remarkable planetary sight in July, see Notes for the Season.
The razor-thin Moon can perhaps be seen near Mercury on the evening of July 14, but its encounter on the morning of August 10 is too close to the Sun to be visible, as might their meeting on the morning of September 9.