Summer Solstice today for the Northern half
Mercury is at its most eastern elongation and will be fading out of view in about 10 days but you can still get a glimpse.
Just after sunset Mercury will show itself about 10 degrees altitude (38N locale at 9pm PDT for example).
On 6/27 Mars, Saturn, Luna and Mercury will be within 9 degrees (in that order) of each other for a cool summer conjunction.