Cascade Snow To Be Measured In Feet

Last week's high pressure pattern is being chipped away this weekend, meaning cooler and wetter weather for some corners of the country. The heat will stay strong across the South, however. 

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(MORE: Ten Day Weather Forecast | Current Satellite)

Here are a few of the changes you can expect this weekend: 

Rain Will Return to the Mid-Atlantic

A stagnant frontal boundary will continue to drape itself from the southern Great Lakes eastward to the mid-Atlantic, where it will remain until early this week. 

This has set the stage for yet another wet weekend in the D.C. and Baltimore metro areas and the surrounding region. 

Several areas have already seen spotty flooding on the Delmarva peninsula. 

We certainly do not expect a washed-out weekend, but afternoon and evening showers are likely.

More than an inch of rain is expected along a stretch of real estate from northern Illinois through Indiana, Ohio, West Virginia and eastward into the Chesapeake Bay. Some spots could get more than 3 inches of rain, especially in slow-moving thunderstorms. 

Spotty flooding is a possibility across all of the areas mentioned above. 

(MORE: The Strange Things Meteorologists and Engineers See While Maintaining Weather Instruments)

High Elevation Snow and Cool Air Dips into the Northwest

A late-season low pressure system is moving through the Pacific Northwest with historical connections to the Gulf of Alaska. 

The storm system, with an attendant upper-level dip in the jet stream, has pushed into the northern Rockies with colder-than-average temperatures. 

Highs will be in the 50s and 60s in the lower elevations on Sunday, and in some spots still on Monday. This translates to temperatures of 5 to 20 degrees below average.

It will feel a bit like winter in the highest elevations into Sunday.

This chill plus some Pacific moisture are combining to make for a wet weekend, which will include some snow showers in the higher elevations of the Cascades and the northern Rockies. 

Snowfall totals won't be very impressive, generally a few inches, but the late-season snow may catch hikers off guard.

(MORE: It's June and There Is Still a Pile of Snow in This Wisconsin City)

Heat Prevails in Southwest, Southern Plains

The dome of high pressure that fostered both heat and fire weather conditions this past week will stick around this weekend. 

Temperatures will climb into 90s across much of the Southwest and the southern and central Plains this weekend. A few spots in the Desert Southwest will climb into the 100s and to near 110. 

Temperatures from the Rockies to the central Plains and mid-Mississippi Valley won't be quite as hot as west Texas and the Desert Southwest, but they will run 10-15 degrees above average.

(MORE: Lower 48 Just Had Its Warmest May on Record) 

Unfortunately for many spots, this heat is likely to remain into the new week ahead.