Very warm weather is in store for the District through Labor Day, but there will also be a few rounds of thunderstorms that may cause some disruptions.
The occasional storms will help to keep the worst of a large heat wave at bay over the Central States, where temperatures will surge to near 100 each day through the holiday weekend.
One batch of showers and thunderstorms will swing through the District Wednesday. People heading to the Dr. Martin Luther King, Jr. activities will want to bring an umbrella or a plastic poncho.
In the Washington, D.C., area, despite the risk of spotty strong storms through Monday, the weather pattern should be great most of the time for late-summer activities such as swimming, boating, evening ball games and outings. However, it may be a tad warm for folks without air conditioning and those site-seeing by foot.
Temperatures will be in contrast to much of the first three weeks of August, when readings averaged a couple of degrees below normal. Temperatures will average 3 to 6 degrees above normal over the next week or so. Average temperatures for the last week of August range from a low of 68 to a high of 85.
High temperatures most days through the last unofficial weekend of summer will be in the upper 80s to the lower 90s. Nighttime lows will generally be within a few degrees of 70.
Humidity levels will be typical of August.
There can be a couple of days where downpours are persistent enough to cause minor flash and urban flooding problems, as well as travel delays at the airports and along the Beltway and interstates 66, 70 and 95. A few communities can also be hit with strong, gusty winds that cause sporadic power outages.
After the storms Wednesday, another episode or two is likely to occur at some point over the Labor Day weekend.
Warmer air will build from California to Washington into Tuesday raising temperatures to near-record levels.
Waves of arctic air invading the eastern half of the United States this week will culminate with the coldest weather of the season so far for some areas by the second weekend of February.
The new week will bring more opportunities for snow to create slick travel in the northeastern United States, starting with a winter storm set to sideswipe New England on Monday.
As the first of several waves of arctic air sweep southeastward across the Midwest, just enough snow will occur to cause slippery travel over a broad area into Monday.
Cold and snow showers are in store for the New Hampshire primary on Tuesday but should not significantly impact voter turnout.
In some circumstances climate, environmental factors and weather have led to some of the most exciting, mysterious and academically important discoveries of all time.
Seminole, TX (1933)
-23 degrees , Texas state record.
Vega, TX (1956)
61 inches of snow fell from one storm (Feb 1-8) State record for a single storm and for a month.
Snowstorm, worst of season. 12-18 inches in the western mountains . . . a foot common statewide up to 24 inches in the mountains of Vermont, between Bristol and Waitsfield. 16 inches in other mountain areas, 12-14 inches in valleys, 14 inches at Albany, NY and 10 inches at Plattsburgh, NY.