Sunshine and 90-degree Fahrenheit heat will overtake the northeastern U.S. by the middle of this week, following cool and dreary weather for much of May so far.
The temperature surge is already underway in the Midwest and will reach the central Appalachians on Tuesday. By Wednesday afternoon, people from the mid-Atlantic to New England will bask in the warmth.
Temperatures will climb well into the 80s as far north as northern Maine, while many of the major cities from Boston to New York City, Pittsburgh, Cleveland and Detroit will approach 90 degrees Fahrenheit on one or more days this week.
People will be able to turn off their heat. Air conditioners and fans will hum with activity. The weather will be a boon for most warm season sports activities. With the surge in warmth, insect pests such as ants, termites and ticks will be active.
"Manhattan, New York, had a high of 87 on April 16, but the warmth was a only a false start," according to AccuWeather Chief Meteorologist Elliot Abrams. "This week, temperatures are likely to surpass the 87-degree mark, which was the highest temperature of the year so far."
Following AccuWeather RealFeel® Temperatures in the 30s, 40s and 50s into Tuesday morning, some people in the Northeast will go from shivering with long sleeves and jackets to perspiring in shorts and short sleeves by Wednesday afternoon.
Cities such as Philadelphia; Baltimore; Washington, D.C.; Charleston, West Virginia; and Richmond, Virginia; will reach or exceed 90.
At this level, daily record highs will be challenged on one or more days. Some records that could fall date back to the early 1900s.
RealFeel temperatures will soar well into the 90s for a few hours in the urban areas of the major cities.
Because of the prevailing cool conditions over the past couple of weeks, people exercising or partaking in strenuous physical labor labor should use caution during the sudden heat.
Be sure to drink plenty of fluids and take some breaks.
Temperatures along some of the south-facing beaches will be 10 to 15 degrees lower than areas along much of the Interstate-95 corridor.
People considering a jump in the lake or ocean are urged to use extreme caution. Ocean water temperatures are still dangerously low this time of the year and range from the 40s along much the New England coast to the 50s along much of the mid-Atlantic coast.
The summerlike pattern in store for much of this week will not mark a long-lasting end to cool conditions for the month.
"Cooler air will settle across the region this weekend and into early next week," Abrams said.
However, temperatures are not likely to dip as low as that of the past couple of weekends. In most areas, highs will only be trimmed back to the 60s and 70s.