Question about trekking in Tiger Leaping Gorge, this July.

Hi,

I'm interested in visiting Lijiang City this coming July. and plan on doing a 2-3 days trekking at Tiger Leaping Gorge.

I'm a bit confused as to how the weather in July really is and is it safe for trekking? Some website says its Summer now, but some web info says it rains a lot, And if the later information is true, I'll be re-planning my visits to interesting sites in Lijiang instead.

Thank you very much. :D