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Chesapeake Bay weather for March 3: evening update

National Weather Service forecast map
National Weather Service forecast map
Map courtesy National Weather Service

Brian's exclusive forecast for Baltimore, Annapolis, and northern Delmarva:

*RECORD-BREAKING COLD POSSIBLE TONIGHT*

Tonight: Clear and unseasonably cold with a low around 5. Winds diminishing to near calm. The all-time March record low at Baltimore (BWI) is 5 degrees.

Tuesday: Sunny but cold with a high in the mid 20s to near 30.

Tuesday Night: Clear and cold with a low around 15.

Wednesday: Mostly sunny with a high in the mid to upper 30s.

The extended forecast calls for sunshine a chance of rain and/or snow on Thursday with a low in the upper 20s and a high in the upper 30s. Mostly sunny on Friday with a low in the upper 20s and a high in the mid 40s. Mostly sunny on Saturday with a low in the lower 30s and a high in the upper 40s. Mostly sunny on Sunday with a low in the lower 30s and a high in the upper 40s.

Under a clear sky tonight, and with near-calm winds, thermometer readings will fall to near record-breaking levels with low temperatures on Wednesday morning between 0 and 10 degrees! The all-time record low at Baltimore for the month of March is 5 degrees. After a frigid start to the day, Wednesday will be sunny but cold with highs in the upper 20s (the average high for this time of year is around 50). Temperatures will moderate later in the week with a system bringing another round of wintery precipitation to the region in the form of mixed rain and snow showers on Thursday. At the moment, the system on Thursday is not favored by computer forecast models to strengthen; however, new data that comes in tomorrow should provide forecasters with a better idea regarding the potential for more snow this week. By this weekend, temperatures will inch closer to seasonal averages for early March.

On the Maryland portion of Chesapeake Bay, a Small Craft Advisory is in effect until 6 a.m. on Tuesday. Winds tonight will come out of the north at 10 to 15 knots with gusts over 20 knots and waves up to 3 feet. Winds on Tuesday will come out of the northeast at 10 knots with waves from 1 to 2 feet. Winds on Tuesday night will come out of the northeast at 10 knots with waves around one foot. Winds on Wednesday will come out of the northeast at 10 knots with waves around one foot. Winds on Wednesday night will come out of the northeast at 10 knots with waves around one foot. Winds on Thursday will come out of the northeast at 10 knots with waves around one foot. Visibility may be reduced in rain, snow, and fog on Thursday. 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 March 3 is 49 degrees and the average low is 30 degrees. The records at Baltimore on this date are 78 degrees in 1923, and 10 degrees in 2009. Today's sunrise will occur at 6:36 and the sunset will occur at 6:01. Weather data courtesy of the National Weather Service. For more weather updates, please visit my web site www.chesapeakebayweather.com, 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.