Heat advisories have been issued for Pleasanton and the Tri-Valley where temperatures are expected to reach into the lower 100s with west winds of only 5 to 15 mph.
Tonight the region is expected to be mostly clear. Low temperatures in the upper 40s to mid 50s and west winds of 5 to 15 mph are anticipated.
Sunday the region is expected to be partly cloudy in the morning and mostly sunny in the afternoon. High temperatures in the lower 100s inland and west winds of 5 to 15 mph are anticipated.