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Weekend Weather Outlook

UPDATED 11:30 AM EDT, July 27, 2013

UPDATED By WeatherBug Meteorologist, Fred Allen

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The last weekend of July will feature typical pop-up thunderstorms that could interrupt outdoor plans east of the Mississippi River and in much of the West. Cooler temperatures will continue to push into the Great Lakes and central Plains.

WeatherBug Meteorologist Addison Green has the latest in this exclusive WeatherBug National Outlook video.

Today:

Showers and thunderstorms will be the norm to start out the last weekend of July from the Mississippi River and points east. Though it won`t be attached to severe weather, umbrellas and windshield wipers will get quite a workout this afternoon and evening. The only places escaping the rainy doldrums for the start of the weekend will be the eastern Carolinas and southern and central New England.

The thermometer will remain quite chilly for late-July standards across the Great Lakes and far northern Ohio Valley, where 50s and 60s will be mixed in amongst a few low 70s from Indianapolis to Detroit. The Mid-Atlantic and New England will climb well into the 70s and lower 80s, with the Southeast and Florida topping out in the upper 80s to 90-degree mark today.

Even the Rockies, Great Basin, and Desert Southwest extending onto the far western High Plains will see their own fair share of soggy weather today. Downpours and a few destructive thunderstorms will erupt this afternoon, triggering additional areas of flash flooding. Remember, if you approach a flooded road, it is best to, "Turn Around, Don`t Drown!"

Meanwhile, the Northwest, northern California, and much of the Plains will be frolicking in plenty of sun today. Even better, temperatures will be more reminiscent of fall than summer for most.

Widespread 70s, 80s, and 90s, with a few triple-digits readings will be the norm across the West and for the Plains today.

Sunday:

Today`s downpours and thunderstorms will shift a bit further east on Sunday, affecting the East Coast and Great Lakes. Fortunately, this will mean a brighter and drier outcome for the Ohio Valley, Mid-South and most of the Southeast on Sunday.

Sunday`s weather will also be a replica of Saturday across the Rockies, Great Basin, and Southwest into the central Plains. Once again, downpours and thunderstorms will cause a few disruptions to outdoor barbecues and plans from Arizona and New Mexico all of the way to the Montana and Canada border on Sunday afternoon and evening.

Even the Northwest and northern California will revel in more late-July bright sunshine and comfortably warm temperatures.

The coldest U.S. temperatures will be found across the Great Lakes and Ohio Valley, where a few 50s and 60s will remain the rule. In stark contrast, the warmest values will be found in the U.S. Southern-Tier, where 80s, 90s, and triple-digits will be common. Everywhere else will see the mercury climb into the 70s on Sunday.

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