Here is a basic overview of the weather patterns in Gresham, Oregon. 
*Average Annual Precipitation in Gresham Oregon....37.39 inches
*Coldest Month in Gresham Oregon.......January
*Warmest Month in Gresham Oregon.....August
*Lowest Monthly Average Temperature in Gresham Oregon......34f
*Highest Monthly Average Temperature in Gresham Oregon.......80f
If there are any other questions we can answer for you about  climate in Gresham and surrounding communities, drop us an Email and let us know.  We are also glad to help with local information and business referrals.  Please take a few minutes to explore our site.  Thanks for visiting GreshamArea.com!