This weekend's storm is responsible for a couple of things we haven't seen in quite a while. First, more than an inch of rain fell across the region on Saturday. That hasn't happened since late July, when we had three such rainy days. Despite the weekend rain, October is almost certainly going to be the third straight month, and seventh month this year, with below-normal precipitation.
The high pressure system behind the storm will bring the first extended period of cooler-than-normal weather since early May. Today is going to be the warmest day of the week with a high near 60. Cooler air will arrive tonight with the low dropping to the lower 40s tomorrow morning. Tuesday's high will only be in the lower 50s. It's going to remain breezy through tomorrow.
Ideal conditions for radiational cooling will arrive on Tuesday night as the winds die down under clear skies. Wednesday morning's low in the city could dip into the upper 30s for the first time since early April. Wednesday's high will be lucky to reach 50, but after another cold morning on Thursday daily highs should rebound to the mid or upper 50s for the weekend.