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.
While lacking across a large part of the United States on Christmas Day, arctic air is set to make a comeback during the final days of 2014.
Ski areas will welcome the fresh power that will blanket mountains from the Alps and Apennines into the Balkans.
A storm will spread rain and disruptive snow across southeast Europe Sunday into Monday.
As snow winds down over the Central states during the weekend between Christmas and New Year's Day, a new storm will ramp up over the Northwest and will lead to travel disruptions.
There is the risk of flooding from Louisiana to Alabama this weekend, while rain may lead to travel delays in a large part of the South and spotty rain and snow reach the Northeast.
As the year comes to a close and people prepare to celebrate the start of 2015, many will be bundling up as cold weather stretches from coast to coast.
Long Branch, NJ (1913)
70 mph winds during a huge coastal storm.
South Pole, Antarctica (1978)
Record all time high of 7.5 degrees F.
Erie, PA (1989)
December, 1989 became the snowiest month on record. (The month ended with a total of 63.2" beating the record of 62.4" from January, 1978).