7:00 AM | **Overall pattern change continues to much cooler conditions for the eastern two-thirds of the country; the coolest air so far arrives here at mid-week**

6-Day Forecast

Today

Mostly sunny, seasonably cool, highs in the mid 60’s

Tonight

Mostly clear, chilly, lows by morning in the mid 40’s

Tuesday

Partly sunny skies, seasonably cool, mid 60’s

Tuesday Night

Becoming mostly cloudy, quite chilly, chance of rain towards morning, near 40

Wednesday

Mostly cloudy with morning showers, breezy, unseasonably cool, mid 50’s

Thursday

Partly sunny, unseasonably chilly, low-to-mid 50’s

Friday

Mostly sunny, unseasonably chilly, low-to-mid 50’s

Saturday

Mostly sunny, unseasonably cool, mid 50's

Discussion

High pressure will control the weather to begin the week, but then a strong cool front will usher the coolest air of the season so far as the overall “step-down” process to colder conditions continues. The upper level pattern is evolving to a chilly one for the Great Lakes, Midwest and Northeast US with high pressure ridging developing along the west coast and a deep trough of low pressure to be centered near the Great Lakes. The combination of these two features will frequently push chilly air masses into the northern US from central Canada over the next couple of weeks and the chilly air will be quite able to spread eastward to the eastern seaboard. The strong cool front that ushers in this significant change to chilly weather will likely generate some shower activity around here late Tuesday night and early Wednesday.

Video

httpv://youtu.be/Sx6uf3Bo1PU