The Smithsonian Castle at dusk. (John Ernst via Flickr )

Sunshine came out to visit this afternoon and  helped push mild temperatures into extremely warm territory. We ended up treated to our first January 70s in about four years. That’s almost 30 degrees above normal for the date. Unfortunately, the timing was off for most of us to really enjoy it. Much cooler air is on the way back for the weekend, as is a wintry precipitation risk.

Through Tonight: Skies trend cloudier again heading into the night. There could be a brief late-night shower as a cold front passes, but don’t plan on it in any one spot. Lows range across the 40s. Winds are out of the southwest around 5 to 10 mph.

View the current weather conditions at The Washington Post.

Tomorrow (Friday): Cooler air is trickling back in behind the overnight front. You’ll notice winds have shifted around to the north about 5 to 10 mph. Some morning sunshine gives way to increasing clouds with time. I do think we stay dry, though. Highs reach the near 50 zone at least, and perhaps as high as the mid-50s.

See David Streit’s forecast through the weekend. And if you haven’t already, join us on Facebook and follow us on Twitter and Instagram. For related traffic news, check out Dr. Gridlock.

Aches and pain? Probably not weather: While it’s widely believed that weather can cause aches and pain, a new study out of Australia argues that is not the case. This backs up other research on the issue, although not all experts agree.

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