Weather Underground Forecast for Friday, August 09, 2013. A long front stretching from the Northeast through the Plains will be the main driver of weather in the country on Friday. This front is likely to produce moderate rainfall through the Northeast, accompanied by a few thunderstorms. In the Ohio Valley, Tennessee Valley and Plains, general thunderstorms will be possible. These thunderstorms are not expected to be severe, but could be accompanied by hail. As the day progresses, this front will move gradually into the Southeast, leaving the Plains with diminishing showers and thunderstorms into the evening.
To the south, a weak tropical disturbance will pass over southern Florida, increasing thunderstorm coverage while also bringing strong winds mainly south of Lake Okeechobee.
Along the West Coast, a low pressure system will provide some rain to Oregon and Washington, while also keeping afternoon temperatures below normal for as far south as Southern California.
More showers and potential thunderstorms will be possible for the Rockies, where some snow was noted in the higher elevations over the past few days.
The Northeast will rise into the 70s and 80s, while the Southeast, Southern Plains, and Southwest will see temperatures in the 90s and 100s. The Northwest will rise into the 80s and 90s.
Temperatures in the Lower 48 states Thursday have ranged from a morning low of 35 degrees at West Yellowstone, Mont. to a high of 104 degrees at Yuma MCAS, Ariz.