Whether you are out tonight trick-or-treating with the kids or wearing and cheering the cherry-and-white at Lincoln Financial Field, put on those layers it's going to be chilling – er, chilly.
With the high Saturday not expected to break 60, temperatures will fall at night to about 45, according to the National Weather Service. Luckily, winds will be calm, from 3 to 5 mph out of the southwest.
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Here's the rest of the weather service's forecast through Monday:
Sunday: Isolated showers between 9am and noon. Cloudy, then gradual clearing during the afternoon, with a high near 69. West wind 8 to 13 mph. Chance of precipitation is 20 percent.
Sunday night: Partly cloudy, with a low around 52. Southwest wind around 6 mph becoming calm after midnight.
Monday: A chance of showers. Mostly cloudy, with a high near 66. Calm wind becoming northeast around 5 mph in the afternoon. Chance of precipitation is 30 percent. New precipitation amounts of less than a tenth of an inch possible.
Monday night: A slight chance of showers before 1 a.m. Mostly cloudy, with a low around 51. Chance of precipitation is 20 percent.