If the clouds clear out overnight, temperatures may fall to near-freezing levels in parts of our region generally along and west of the Blue Ridge. That’s why the National Weather Service in Blacksburg put out a freeze warning. At this writing near midnight, it’s still hanging in the 40s most places, with low 50s at Roanoke, warmer than it was most of Monday. For the past few weeks, we’ve been in the middle of a battle royale between winter and summer, as we bounce back and forth between June-like temperatures and January-like setups such as this week’s major Eastern U.S. storm system. (A couple of links for more information on that: The Hydrometeorological Prediction Center’s running storm summary, and a lengthy blog item from The Washington Post’s Capital Weather Gang). The overall pattern appears likely to shift back to warm and dry over the next 1-2 weeks or so. In between, we may have some days that are actually fairly seasonal, with highs in the 60s and 70s across the region and lows in the 40s, starting Wednesdsay. We’ll have a series of frontal passages, both warm fronts and cold fronts, in the latter half of the week into the weekend, and these will produce a chance of showers and storms at times. Timing is a bit uncertain on these fronts and will need to be fine-tuned closer to time of arrival, but it does appear a warm front in the vicinity on Thursday will bring a chance of showers and thunderstorms. Between now and then, dry weather will prevail. Tuesday will be relatively chilly, with highs in the 50s to low 60s, and Wednesday morning may again be near freezing in some areas with a better chance of frost as winds diminish.