We will have a lot of seasonably hot weather with only fluctuations in humidity levels affecting the “feel” of each day. Monday will be the least humid day of the week with dew point temperatures in the lower end of the “sticky” range, but we will be right back into the “muggies” on Tuesday.
Storms aren’t too likely on Monday because of the relative lack of humidity, but a weak cold front will be moving south from Pennsylvania, so storms are at least possible mostly in northern Maryland. That front will stall right in the middle of the D.C. area on Tuesday, with a surge in humidity just ahead of it.
Storm chances on the Fourth of July are a bit higher, mostly right along the edge of the front. Slight differences in placement of the front will result in big differences in storm chances. As of this posting, the highest likelihood looks to be south of D.C., but it will be close — the Storm Team 4 radar will have to be monitored all day. At any rate, the storms would be scattered, we won’t all get them and the day won’t be a total washout.
On Wednesday, the front will be mostly south of the area again and humidity will drop a notch or two again on northeasterly winds. Cloud cover may also keep the region just shy of the 90-degree mark.
But on Thursday into Friday, a wave of low pressure will form on the front out in the Ohio Valley, sending the front back north as a warm front, making it more humid and bringing an increased chance of scattered thunderstorms both days. A lot of spots are kind of dry again because of last month’s rainfall shortfall, so some rain would definitely help the lawns and gardens.
• Hot and a bit sticky
• Mix of high-level and low-level clouds, but the sun getting through the breaks
• An isolated thunderstorm possible late in the day, mostly in far northern Maryland
• Mostly cloudy
• Hot and very humid south of D.C.; not as humid in northern Maryland
• A few isolated or scattered thunderstorms late in the day, most likely in central Virginia and southern Maryland
• Lots of high-level clouds
• A little less humid than the day before
• Only a slight chance of scattered thunderstorms, again mostly in central Virginia and southern Maryland
• Hot and humid
• Lots of clouds and scattered thunderstorm chances, especially in the afternoons and evenings
Editor’s Note: The WTOP Workweek Weather Blog is intended as an in-depth yet plain language summary of the business week’s weather potential in the D.C. area along with an explanation of the contingencies and uncertainties that exist at the time of publication. For the latest actual Storm Team 4 forecast, check out the main WTOP Weather Page.
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