Cooler, less humid air will settle over Harrisburg, Pennsylvania, into the first part of the weekend.
Abundant sunshine is in the offing both days, and high pressure will settle eastward.
After a cool start, a warmer afternoon is in store for Father's Day.
Very warm and humid conditions will build over the region during much of next week.
How warm it gets will depend on the amount of sunshine and where complexes of thunderstorms wander each day from the Midwest.
A tropical wave is likely to become the Atlantic Basin's next tropical storm as it approaches or crosses the Caribbean Sea later this week and potentially pose eventual threats to North America.
Fall air has finally arrived in the northeastern United States and may yield the first frost of the season in parts of the region to end this weekend.
Typhoon Megi will continue to strengthen before threatening lives and property across Taiwan and eastern China this week.
Downpours will not be so quick to depart Texas as other parts of the central United States into Monday, further heightening the risk of flooding.
Wintry weather marked the first days of autumn across parts of the Mountain West as snow mixed in with the changing fall foliage.
Jose Fernandez, pitcher for the Miami Marlins, died in a boating accident in southern Florida early Sunday morning.
El Cordnazo, CA (1939)
Greatest September rainstorm with 5.42 inches in 24 hours at L.A. Floods killed 45; $2 million damage.
Southern CA (1970)
Record late September heat wave seared Southern CA for a week. L.A. hit 105 degrees; San Diego hit 97 degrees.
New Jersey (1975)
4-day rains of 7.50 to 11.00 inches. Flooding in northern part of the state.