HAPPY VALLEY, OREGON WEATHER: DECEMBER 2020
TEMPERATURES It was a very mild December as Average Temperatures were about 3° above the monthly Normal. Maximum Temperatures remained in the upper 40s to low 50s through the first 9 days, dropping to the low 40s from the 10th-13th, then rising again, even reaching 60.5° on the 21st for the warmest reading of the month. From the 22nd-31st, temperatures ranged from 49.4° to 39.2°, the latter reading being the lowest Maximum of the month on the 29th. As far…