Rain is expected to return to the Lehigh Valley after a sunny weekend in a May that has been the rainiest month of the year. Skip to content. All Sections. Subscribe Now. 80°F.

The weather service’s precipitation map, which includes totals by county, show Lehigh County has gotten an average of 7.3 inches of rain over the past 30 days, which is abut 3.1 inches above normal.