Autumn weather is often characterized by large swings in temperature from one day to the next, and this weekend will be no exception. After several days of cloudy, drizzly conditions, today will be warm and dry, with highs reaching into the upper 70°F’s. With southerly warm air advection, 80°F is not beyond the realm of possibility. The warm temperatures will persist tomorrow before a cold front that is trailing a low in Canada moves through tomorrow night. There is a chance of showers tomorrow afternoon/evening, but the main effect of the front will be to drop the temperatures. Indeed, Sunday’s high is expected to be quite a bit chillier, only reaching the mid 50°F’s. An intensifying low moving up the coast will bring widespread rainfall on Sunday afternoon and evening. Clear skies should rebound for the holiday on Monday, but with cooler than normal temperatures.