Showers and thunderstorms threaten to put a damper on a part of the holiday weekend across the Midwest, South and interior Southwest. Any wet weather in the Northeast may only impact a fraction of the weekend.
Mostly dry but not bright sunshine in store for the Northeast
"Most of the holiday weekend will be dry from Philadelphia to New York City and Boston," according to Lead Long-Range Meteorologist Paul Pastelok, “Don’t anticipate a bright blue sky as it can be murky early in the weekend.”
Not a washout in the South for the holiday weekend
Highs near 90 F are anticipated in many communities across the South each day from Saturday to Monday. Humidity will create even higher AccuWeather RealFeel® Temperatures.
That steamy air can spark showers and thunderstorms daily.
Gusty thunderstorms may threaten plans in Midwest
A line of showers and thunderstorms is set to cross the Midwest in a west to east fashion Saturday into Sunday.
"Some of these thunderstorms can be strong and gusty," Pastelok said.
Residents planning to attend picnics, parades, sporting events or other festivals will want to download the free AccuWeather app and enable audible weather alerts to know when to move indoors.
Monsoon thunderstorms to increase in interior Southwest
An increase in monsoon moisture is expected to cause thunderstorms to expand across the Desert Southwest through the Labor Day holiday weekend. The afternoon and evening hours will be the most active times of each day.
Campers and hikers will want to closely monitor the sky and be ready to seek shelter as the thunderstorms may bring dangers of flash flooding and lightning.
Heat to be absent in the Northwest as dry weather dominates
Dry weather is also expected to dominate the Northwest through the holiday weekend with temperatures gradually being trimmed.
"While the northern Rockies will start the weekend off warm, these areas will be a couple degrees below normal for Labor Day," Pastolok said. "The cooldown will be nothing like the chilly conditions that allowed snow to fall early this week.”
Near-normal temperatures in the 70s are anticipated for Seattle and Portland. Pastelok expects Portland to see more sunshine than Seattle.
"No heat will sizzle the Pacific Northwest this holiday weekend," he said. "These cities may get their heat the following weekend."
EDITOR’S NOTE: Kristina Pydynowski is a AccuWeather senior meteorologist.