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Posted at 4:40 PM ET, 10/30/2009

PM Update: Cloudy and cool. Halloween showers?

By Ian Livingston

Rain chances center on afternoon/evening Saturday

* Going over Great Falls in a kayak | CWG's annual photo contest *
* Outside now? Radar, temps & more: Weather Wall | Traffic *

The marine air mass overhead has been slow to budge and we have stayed locked in with clouds and cool weather for yet another day. Highs have mainly reached the upper 50s and lower 60s across the area, with temperatures again showing little movement during the day. A southerly wind flow that began this afternoon will warm us up for Halloween, but there will also be a risk of some showers to go with the mild air.

Webcam: Latest view of D.C. from the Netherlands Carillon at Arlington National Cemetery. Courtesy National Park Service. Refresh page to update. See this image bigger on our Weather Wall.

Through Tonight: We stay cloudy this evening and overnight. There may be a passing shower or two and/or some drizzle late, but nothing intense. Lows should mostly be in the mid-50s, maybe some lower 50s in the "cold" spots.

Tomorrow (Halloween): Good news is we probably won't see much rain overall. Bad news is the best odds of showers (around 50%) look to come in the afternoon into evening as a cold front gets close. Hopefully they'll be light or scattered enough to not wash out trick-or-treating, but can't say for sure yet. With the push of warmer air ahead of the front, afternoon highs range between 70 and 75. Evening temperatures should fall back to the 60s.

Late Saturday Night & Sunday: It now appears rain chances may decrease late Saturday night into Sunday rather than the increase predicted earlier, as low pressure expected to develop along the front may not develop after all. That means the potential for clearing skies on Sunday with highs around 60 or into the low 60s.

See Camden Walker's forecast into early next week. And if you haven't already, join us on Facebook and follow us on Twitter.

Winter outlook next week: Next week, CWG will issue its annual winter outlook. As we've mentioned, AccuWeather forecasters are calling for a cold and snowy winter for our region into the Northeast. On the other hand, meteorologist Dave Tolleris says not so fast my friend: " believes there is not enough data to support such a extreme forecast and the stampede for making the colder than normal winter over the Northeast US." He adds that he sees: "a continuation of the pattern which has developed from last winter with the mean trough and coldest temperatures relative to normal existing over the Midwest."

By Ian Livingston  | October 30, 2009; 4:40 PM ET
Categories:  Forecasts  
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Next: Forecast: Seventies with spooky showers late


NBC25 (Hagerstown) provided a bit of insight on the winter weather based on their forecasters and almanac, "We're almost guaranteed to have a snowier winter than last year"

I thought the CWG outlook was coming out this week...

Posted by: spgass1 | October 30, 2009 3:53 PM | Report abuse

Bedtime update: 50.2F and windy in the mountains

Posted by: spgass1 | October 30, 2009 10:41 PM | Report abuse

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