Warmer and more humid air will surge into the Boston into midweek but will not stick around long.
The wedge of high pressure that promoted a mostly rain-free weekend will slip off the coast by Tuesday.
As this happens the door will be open for warmer and more humid air to surge northward.
Humidity will steadily increase Tuesday and Wednesday as temperatures soar well into the 80s.
Wednesday is shaping up to be the hottest day of the week with AccuWeather RealFeel® temperatures reaching well into the 90s during the afternoon.
A breeze should help keep temperatures in check along southwest-facing beaches.
The combination of the warmth and humidity will create challenges and hazards for those who must engage in strenuous labor and those with respiratory issues.
Dry weather should continue to hold through Wednesday as spotty afternoon thunderstorms erupt around the Appalachians.
A cold front will return a shower or thunderstorm Wednesday night through Thursday as it sweeps away the surge of warmth and humidity.
A fresh shot of cooler and less humid air from Canada in the front's wake will lead to a pleasant Friday and start to the next weekend.
The threat for potentially damaging thunderstorms will shift eastward across Europe through midweek.
Residents of the Philippines are being put on alert for potential impacts from Typhoon Noul, which will be a powerful typhoon when it approaches the Philippines this weekend.
While a few showers will pass east of the Bay Area, seasonable weather and sunshine will hold in place through the weekend.
Following a dip in temperature during the middle of the week, summerlike warmth will rebound across much of the Northeast by this weekend.
Daily episodes of severe thunderstorms and flooding downpours will impact the Plains this week, possibly lingering into the weekend.
Wind, seas and surf will build in advance of what could eventually become the first tropical system of 2015 along the southeastern Atlantic coast of the United States late this week.
Thunderstorms rake over Nebraska and Kansas with golf ball-sized hail, wind gusts close to 90 mph at Superior, NE, and 3-1/2 inches of rain at Kensaw, NE.
Sheridan Lake, ND (1984)
Lightning struck a boat out on the water, killing two occupants. A life vest was torn to bits by the powerful bolt.
Louisville, KY (1989)
Coldest Kentucky Derby ever. The race was run in 42-46 degree temperatures. Wet snowflakes were seen nearby.