4:00 p.m. update: The National Weather Service has issued a frost advisory for Fauquier, Prince William, Loudoun, and Frederick counties early Monday morning from 2 a.m. to 9 a.m. Lows dipping into the mid-30s may allow for some patchy frost in these areas. Temperatures east of this region should be warm enough to avoid frost ranging fro the upper 30s to the mid-40s (downtown).
FORECAST IN DETAIL
This forecast period features both moods of the mid-Atlantic fall season. We start on the cool but pleasant side of things, with blue skies and nice temperatures through tomorrow. Tuesday shouldn’t be too shabby, either. But then a strong cold front brings a Canadian chill for Wednesday and beyond. Wednesday itself may turn out to be a rather raw day with a chance of light showers.
Today (Sunday): Following a chilly start, mostly clear skies bring with them a very pleasant October day, even if on the cool side. It’s definitely a long-sleeve kind of day, as highs are capped in the low-to-mid 60s thanks to a breeze near 10 mph from the west-northwest. Those blue skies should contrast nicely with the emerging fall colors. Confidence: High
Tonight: High pressure sets up right overhead, which means clear skies, light winds and sinking temperatures. We’re not talking freezing just yet, but some upper 30s are possible in the coldest suburbs, with most spots bottoming in the low-to-mid 40s beneath star-filled skies. Confidence: High
For related traffic news, check out Dr. Gridlock. Keep reading for the forecast through the weekend…
Tomorrow (Monday): The new work week starts with a noticeable wake-up chill. But with high pressure still in control, plenty of blue skies and bright sun steadily boost morning readings through the 40s, 50s, and to near 60 by around lunchtime. Light winds from the south, near 5-10 mph, then bump afternoon highs to the mid-60s to near 70. Confidence: High
Tomorrow night: Skies stay mostly clear early, but clouds may stream in from the west overnight as a cold front packing much cooler air starts to approach. Light winds from the south and the increased clouds keep us milder than tonight, with overnight lows ranging from the mid-40s to the low 50s. Confidence: Medium-High
A LOOK AHEAD
Scattered clouds dot the sky on Tuesday as the front gets closer and then moves through with a 30% chance of a daytime shower. Highs head again for the mid-to-upper 60s, and if we can muster enough sun, 70 could be in the cards as well. Tuesday night, a wave of low pressure starts to develop back to our west, sending clouds our way and potentially a stray shower or two by morning. Expect lows in the mid-40s to near 50. Confidence: Medium
Wednesday could be a pretty raw-ish day the way it looks right now. Light showers are possible (40-50% chance) as an upper-level system works through. Partly to mostly cloudy skies combined with an influx of cool Canadian air should limit highs to the mid-50s to near 60 (not just on Wednesday, but likely through the rest of the work week). Confidence: Low-Medium