Another surge of heat is coming. Here’s where the worst will be.

Another surge of heat is coming. Here’s where the worst will be.

For millions of people across the Mid-Atlantic and Northeast, Friday will bring a welcome reprieve from extreme heat. After a record-tying four consecutive days with temperatures at or above 95 degrees around D.C., temperatures are forecast to reach only the lower 80s.

But the break from the heat won’t last long.

Another surge of above-average temperatures and humidity is expected this weekend into early next week — though less brutal than the recent record-breaking heat. For around 130 million people across the United States, high temperatures are forecast to exceed 90 degrees through Wednesday.

On Saturday, the Midwest will feel this uptick in temperatures, including areas from St. Louis to Minneapolis, followed on Sunday by the Great Lakes, including Chicago, Milwaukee and Detroit.

The Northwest has recently avoided high heat, but that will change starting on Sunday, with warmer-than-average temperatures in the region into next week.

Western states have the highest chances for above-average temperatures during July, according to NOAA’s Climate Prediction Center, elevating the risk for heat waves and wildfires.

Humidity is forecast to reach extreme levels in parts of many central, southern and eastern states through Wednesday.

Temperatures are forecast to exceed 90 degrees for around 130 million people through next Wednesday.

Northeast and Mid-Atlantic

Conditions in this area will trend toward more typical summer weather compared to the punishing conditions of the last week.

Friday will be the coolest and least humid day in the region out of the next five, with high temperatures ranging from the 70s to the lower 80s.

On Saturday, very high humidity will return, along with near 90-degree heat from New York to Washington. Scattered thunderstorms could also pose a danger across the region.

On Sunday in the Mid-Atlantic, hot weather will continue; across the Northeast, it will be more comfortable.

Throughout the region, humidity levels will again surge on Monday and Tuesday, as 90-degree temperatures reach as far north as Maine and southern Canada — tempered by numerous showers and thunderstorms, some possibly heavy enough to cause isolated flash flooding.

Plains and Midwest

On Friday, a Level 4 out of 4 extreme risk for heat-related impacts covers an area from near Indianapolis and Cincinnati to Wheeling, West Virginia.

Over the weekend, the focal point for above-average heat and humidity will shift farther west, covering most of the Plains and Upper Midwest on Saturday, then the Great Lakes on Sunday and Monday. Areas from near St. Louis to Chicago and Detroit may face a Level 3 out of 4 major risk for heat-related impacts.

There's a Level 3 out of 3 major risk for heat-related impacts across several central, eastern and northwestern states through early next week.

To the south in Little Rock, an eight-day streak with high temperatures at or above 92 degrees shows no signs of ending, with a major risk for heat-related impacts through Monday.

Then on Monday and Tuesday, a cooler air mass from Canada will spell relief for the Plains and Midwest.

West and Rockies

Since around the summer solstice, Western states have had relatively cool weather for this time of year. A five-day streak with high temperatures below 100 degrees was snapped in Las Vegas on Thursday, representative of regional warming trend into next week.

A dome of high pressure will strengthen near the Great Basin this weekend, with 110-degree heat becoming more widespread in the Southwest and 100-degree expanding across eastern Washington to near Boise, Idaho and Salt Lake City early next week — where the risk for heat-related impacts will reach major levels.

Temperatures in Portland and Seattle, cities that have recently experienced cool weather for the time of year, will rebound into the 80s to near 90.

Over the next two weeks, temperatures will commonly exceed 90 degrees across western, central and southern states.

Southeast and Deep South

In Raleigh, North Carolina, high temperatures have reached at least 96 degrees for five consecutive days — equaling the second-longest June streak on record.

While the Carolinas will continue to be a hotter outlier in the days ahead, the wider Southeast and Deep South will experience more typical heat and humidity levels into next week as well as near daily showers and storms.

July outlook

It would be more surprising if next month wasn’t hot — for most of the United States, July is the hottest and most humid month on average.

But this coming July, conditions are shaping up to be even hotter than average across western, central and northern states.

During July, the most unusually hot conditions are predicted to occur in western, central and northern states.

To start the month, the warmest conditions compared to average will probably stretch from the Northwest to north-central states. That heat is likely to then expand eastward and southward — and fast.

Large swaths of the country may be warmer than average during the middle part of next month, along with above-average humidity, especially in the East.

In other words, don’t count on a cool July. Summer is just getting started.