Brian's exclusive forecast for Baltimore, Annapolis, and northern Delmarva:
Overnight: Variable cloudiness with light freezing mist toward morning. Low around 30.
Friday: Light freezing mist changing to rain. High around 40.
Friday Night: Periods of rain with a low in the upper 30s.
Saturday: Periods of rain with a high in the upper 40s.
The extended outlook calls for clouds and sun on Sunday with a low in the upper 30s and a high in the upper 40s to lower 50s. Clouds and sun on Monday with a low in the mid 30s and a high in the upper 40s. Clouds and sun on Tuesday with a low in the lower 30s and a high in the upper 40s.
The National Weather Service at Baltimore/Washington has issued a Freezing Rain Advisory in effect from 3 a.m. through 9 a.m. on Friday for the western shore counties of Baltimore and Anne Arundel as well as areas to the north and west of Baltimore and Washington. An upper-air disturbance will bring a round of light precipitation to the region early Friday morning. With surface temperatures at or slightly below freezing, any rain that falls may freeze. Significant icing is not expected, but some walkways and side roads may become slick for a few hours. Areas right along the bay shore may avoid the freezing rain altogether, whereas locations to the north and west of the cities will be cold enough to support several hours of freezing precipitation. No snow is expected due to the warm temperatures aloft, although higher elevations may experience a brief period of snow before changing to freezing rain. Temperatures will moderate during the day and all precipitation will change to rain with highs approaching 40 degrees. Meanwhile, a cold front will approach the area from the west on Saturday. Mild air ahead of the front will push northward as the front advances toward the east. This will enable temperatures to climb into the 50s on Saturday; however, the trade-off will be a soaking rain in the Middle-Atlantic region. By Sunday, the front will have moved to our east and winds will shift to the west-northwest. The air behind the front will be slightly cooler, but still warmer than average with highs on Sunday expected to reach well into the 40s.
On the Maryland portion of Chesapeake Bay, no advisories are currently in effect. Winds on Friday will come out of the east at 10 knots with waves around one foot. Visibility may be reduced in rain, freezing mist, and fog. Winds on Friday night will come out of the southeast at 10 to 15 knots with gusts over 20 knots and waves from 1 to 2 feet. Visibility may be reduced in rain and fog. Winds on Saturday will come out of the south at 10 to 20 knots with gusts over 30 knots and waves from 2 to 4 feet. Winds on Saturday night will come out of the west at 10 to 15 knots with gusts over 25 knots and waves from 1 to 3 feet. Visibility may be reduced in rain and fog. Marine information is provided as general guidance. Boaters should always stay tuned to the latest forecasts and advisories from the National Weather Service.
The average high temperature for January 9 is 41 degrees and the average low is 24 degrees. The records at Baltimore on this date are 75 degrees in 1937 and 2 degrees in 1970. Today's sunrise will occur at 7:26 and the sunset will occur at 5:01. Weather data courtesy of the National Weather Service. For more weather updates, please visit my Chesapeake Bay Weather page on Facebook, and if you're heading to Ocean City feel free to check out my Ocean City MD Weather page on Facebook. You can also follow me on Twitter @chesbayweather.