D.C. Forecast: Chilly, warm, & cold again in a week of weather whiplash

      This Afternoon:Turning Mostly Sunny, Breezy, Chilly Highs: 45-51 Wind: NW 10-15/G 20 mph Tonight:Mostly Cloudy & Chilly Lows: 34-38 Wind: N 5 mph Monday:Mostly Cloudy & Warmer Highs: 60-63 Wind: SW 5-10 mph

      At long last, we had a genuinely comfortable day!{} Saturday's 67 degree high at Reagan National marked the 2nd warmest day this calendar year.{} Only the 69 degree reading back on February 21st was toastier.{} However{}a cold front, {}now to our south, has brought a temporary halt to the heat.{} For while it is{}seasonably cool today with most areas{}in the{}40s, breezy northwesterly winds are producing wind chills in the low 30s.{} Under mostly sunny the mercury should top out in the mid{} to{}upper 40s with winds gusting to 20 mph and above.

      Our fortunes reverse on Monday as high pressure over the south will set up a southwesterly flow.{} The warmer air{}will bring back the 60s for both Monday and Tuesday.{} The pendulum will swing again on Wednesday as colder air drops down from Canada, bringing with it the likelihood of a cold rain, highs in the 30sand 40s, and the possibility of some snow. Thereafter, in what will be a week of weather whiplash, temperatures will start to moderate again with highs nearing 60 by Saturday.