A push of cooler and less humid air is settling over Philadelphia and the mid-Atlantic for the balance of this week.
Several days of bright sunshine are in store.
The push of Canadian air will end the daily risk of showers and thunderstorms experienced during the holiday weekend, including incidents of flash flooding.
Many people will be able to turn off the fans and air conditioners with temperatures in urban areas dropping well down into the upper 50s and lower 60s at night.
Many suburbs will have night time temperatures dipping toward 50 degrees with lows in the 40s in the coolest spots.
Each day Wednesday through Friday will bring bright sunshine and a cool breeze with highs generally in the middle 70s to near 80 degrees.
The only potential, weather-related travel problem would be patchy early-morning fog for long-distance commuters over the river valleys and perhaps part of southern New Jersey. Some major highways that could be impacted by isolated fog patches include the Turnpikes, the Blue Route and the Schuylkill and Atlantic City expressways.
For those hitting the Jersey shore and the Delaware beaches this week, the afternoons will still be warm enough to swim, but bring a sweatshirt or jacket for the evenings and mornings.
A prolonged heat wave across northern Argentina has led to blackouts in and around Buenos Aires.
A powerful storm will bring disruptive weather from Spain to France and Italy for Christmas Day.
At least five storm systems will impact the United Kingdom and Ireland through Christmas.
Ice, rain and snow are slamming the United States from Texas to Maine.
Thunderstorms in parts of the South this weekend are threatening lives and property.
As California heads into its third consecutive dry winter with no relief in sight, firefighters continue to battle a late-fall blaze in Big Sur.
Elk Park, MT (1983)
Unofficially -64 degrees F. (nation's all time record low is -70 degrees F.).
Kansas City (1961)
16.6" snow, greatest in December.
Second of triple December storms - 25" at Gettysburg, PA.