A large ridge of high pressure will remain in place across the Mid-Atlantic through mid-week, resulting in near-record warmth on Tuesday. The record high for Tuesday is 86 degrees, set in 1975. This is not an Indian Summer, as by definition, an Indian Summer is an unusually warm period following the first killing frost or freeze. We have yet to see temperatures even close to freezing in the Richmond area this Fall. A cold front will bring the chance of showers and much cooler temperatures to the area by the end of the week.
Zach