Linda Lam
It will feel more like summer for the final week of May in the Southeast, while it will be a bit cooler in the West, and in between, showers and storms are expected.
A northward bulge in the jet stream will dominate the upper-level pattern over the East this week, while a southward dip in the jet stream will prevail over the West. This will result in a warm and generally dry pattern in the East and a cooler pattern in the West.
In addition, a couple of disturbances will bring showers and thunderstorms to portions of the Plains and northern tier in the week ahead.
Below, we take a closer look at what to expect.
1. Wet, Stormy Pattern in Plains, Northern Tier
The position of the jet stream will be favorable for rounds of showers and thunderstorms in portions of the Plains and northern tier for the last week of May.
Locally heavy rainfall is possible, which could prompt flooding in some areas, especially in locations that received ample rainfall this last week.
Strong to severe thunderstorms may also develop at times in the Plains and Midwest.
Some of this rain will be beneficial in the Plains and Midwest, where drought conditions prevail, especially in parts of the Northern Plains. Just over 50% of the High Plains is experiencing drought conditions, according to the U.S. Drought Monitor.
(MORE: 7-Day Forecast)
Rainfall Forecast2. Heat Wave in the Southeast
A strong ridge of high pressure will be in place over the Southeast, resulting in very hot conditions.
High temperatures will be 10 to 15 degrees above average into the week ahead in the Southeast. This translates to temperatures soaring well into the 90s, with a few spots approaching 100 at times.
Daily record highs are likely there as well, particularly through early week. A few cities that could set new daily record high temperatures include Nashville; Birmingham, Alabama; Atlanta; and Raleigh, North Carolina.
Low temperatures will be near to above average, with temperatures generally dipping only into the 60s and lower 70s.
The good news is that for most locations, humidity levels are not anticipated to be excessive.
Forecast Highs3. Roller-Coaster Temperatures in the Northeast
High temperatures will return closer to average for the start of the week after a hot Sunday.
A southwesterly flow will return to the Northeast midweek, bringing a return of above-average temperatures and an increase in humidity. Daily record high temperatures are possible on Wednesday in the mid-Atlantic, including in Washington, D.C.
Another cold front will approach the region late week, which will result in cooler temperatures returning once again.
(MORE: Here's When Your City Typically Experiences Its First 90-Degree Temperature)
Forecast Highs4. Wet in Northwest
Another system will move into the Northwest early this week and a cold front associated with this system will push southeastward. As a result, the chance for showers will return to portions of the Northwest into Northern Rockies early to midweek.
Drought remains a serious concern for much of the West, so precipitation is welcomed, although rainfall will generally be light.
Most of the West will experience temperatures close to average for late May in the middle part of this week. Highs in the 60s and 70s are expected for much of the northern tier, while 90s return to the Desert Southwest. Lows in the 40s and 50s will be widespread, with 60s in the Southwest and Southern California.
Early Week ForecastThe Weather Company’s primary journalistic mission is to report on breaking weather news, the environment and the importance of science to our lives. This story does not necessarily represent the position of our parent company, IBM.
The Weather Company’s primary journalistic mission is to report on breaking weather news, the environment and the importance of science to our lives. This story does not necessarily represent the position of our parent company, IBM.
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