Happy Valley, Oregon, Weather: September 2017
TEMPERATURES: The normal steady monthly decline in temperatures occurred through this September. The Average Maximum/Minimum/Mean Temperatures for Sept 1st-15th vs. 16th-30th were thus: 82.9°/59.1°/71.0° vs. 68.1°/51.8°/60.0°. There were 5 days with Max. Temps. ≥90°, all occurring over the first 11 days of the month. A brief warm-up occurred at month’s end with 2 days reaching ≥80°, otherwise Maximum readings mostly stayed in the 50’s and 60’s over the latter half of the month. As far as Minimum Temperatures, there were…