average lehigh valley yearly rainfall
That's the second driest on the books, behind May 1964 when only 0.09 inches fell in the Lehigh Valley. For the year so far, the Valley had only 11 inches of rain â down from the normal 16 inches. It doesn't help that temperatures are creeping up. The average temperature this month is 65.4 degrees â 6 degrees above normal. It's been a very warm and dry month, Meola said.