Forecast Last Updated at Wednesday, July 26, 2017 at 6:52AM

Slightly Less Warm

Slightly cooler air is settling in as Monday's front stalls to our south and west. High pressure centered in New York is in control of our weather. Easterly upslope flow around the high is producing clouds especially this morning. We have a barely worth mentioning chance of a shower this afternoon; however, the vast majority of the region will be dry. Fog is possible along the eastern escarpment of the Appalachians. Thursday will be warmer and more humid with widely scattered PM showers and storms as the stalled front edges closer to our western flank. The next front of significance arrives Friday evening--expect showers and storms Friday, especially in the afternoon and evening. Refreshingly cooler, drier air behind that front produces a glorious weekend.

Wednesday Hi: 71 Lo: 64 AM clouds; Partial afternoon sun; Cannot completely rule out an afternoon shower; Some fog possible tonight; Light East wind

Thursday Hi: 74 Lo: 66 Mostly cloudy after early AM fog; Widely scattered PM showers and thundershowers; SW wind 5-15 mph

Friday Hi: 69 Lo: 59 Mostly cloudy; Showers and t-storms especially in the PM hours; SW wind 5-15 mph becoming NW Fri. night

Saturday Hi: 66 Lo: 54 Lots of sunshine; Delightful

Sunday Hi: 69 Lo: 55 Sunny; Refreshing

Further Out

Monday - Mostly sunny; Still very nice; High near 70 degrees; Low in the upper 50s
Tuesday - Scattered PM clouds; Warmer; High in the mid 70s; Low in the upper 50s

Forecast Discussion

Climatologically, this should be the warmest week of the year, but temperatures will be a couple degrees cooler than seasonal norms today thanks to an easterly flow around high pressure centered in New York. That easterly upslope flow off the Atlantic is producing clouds, especially this morning. Fog is possible through early Thursday along the east side of the Appalachians. Monday's front is stalled to our south and west. The chance of a thundershower this afternoon is extremely low, but not zero.

Thursday, all the players shift east bringing Monday's front into East Tennessee, close enough to raise the threat of afternoon showers and storms. Thursday will be warmer and more humid as well.

A cold front marches from the Plains (today) to the Ohio Valley (tomorrow) and through the Southern Appalachians Friday night. As a result, expect more clouds with showers and storms, especially in the afternoon and evening.

The front continues the push south this weekend, reaching Florida by Monday. The great news in this forecast is cooler, drier air invades this weekend thanks to high pressure in the Western Great Lakes. It's the last weekend of July you have always dreamed of--refreshing, awesome temperatures, well below seasonal averages.

Monday and Tuesday are uneventful and pleasant with temperatures gradually returning to average by August 1.

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