PM Update: Light rain showers to develop early Sunday.
Sunday marks the last full day of autumn 2020. Where has the time gone? Well, in a year like this one, who knows? What we do know is that the last day before winter begins will feature some light precipitation in the morning, and maybe even a few touches of flakes as well, to remind you that winter is coming.
Through tonight: Mostly cloudy skies will persist through the overnight period. Despite the clouds, temperatures will be relatively cold, with lows ranging from about 28 to 32 degrees, even in D.C. proper. Winds will be quite light out of the south/southeast at 5 mph. Some patchy fog will probably develop, too.
Tomorrow (Sunday): Light rain showers mixed with sleet and a few flakes of snow will spread over the area by late morning, especially south and east of D.C. Precipitation should end by the early afternoon, leaving us with overcast skies and temperatures in the low 40s. It will be cloudy, foggy and cold Sunday night, with lows right around the freezing mark once again.
https://www.washingtonpost.com/weather/2020/12/19/pm-update-light-rain-showers-develop-early-sunday/?