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Chesapeake Bay weather for January 5: evening update

National Weather Service forecast map
National Weather Service forecast mapMap courtesy National Weather Service

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

Tonight: Cloudy with mist and fog. Temperatures rising into the 50s by morning.

Monday: Variable cloudiness with rain and snow showers. Temperatures falling into the upper 20s to lower 30s by evening. Winds gusting from the NW at 20 to 40 m.p.h. at times with wind chill values below zero.

Monday Night: Clear, windy, and cold with a low around 5. NW wind gusting over 25 m.p.h. at times. Wind chill values below zero.

Tuesday: Sunny, breezy, and cold with a high around 15. West wind 10 to 20 m.p.h. at times.

Tuesday Night: Clear and cold with a low around 5. Winds diminishing to less than 10 m.p.h.

The extended outlook calls for sunshine on Wednesday with a high in the upper 20s. Clouds and sun on Thursday with evening snow showers. The low will be in the lower 20s and the high will be in the upper 30s. A chance of rain and/or snow showers on Friday with a low in the lower 30s and a high in the mid 40s. Clouds and sun on Saturday with a low around 35 and a high around 50. Mostly sunny on Sunday with a low around 35 and a high in the lower 50s.

As the sun begins to set on Chesapeake Bay, areas of mist and fog are being reported. Temperatures are quite mild to the south and east of Annapolis with 5 p.m. readings in the 50s and 60s near Ocean City, Salisbury, and Richmond. Meanwhile, to the north and west the mercury is struggling to break above the freezing mark. In places like Frederick, freezing mist has caused icy conditions all day. Despite the persistence of the cold across northern Maryland, the cold front approaching from the west will cause warmth to surge northward ahead of the frontal boundary so that temperatures may be as warm as the low to mid 50s by morning in the Annapolis area. Strikingly, by evening we may be in the upper 20s with a wind gusting from the northwest at 20 to 40 miles per hour! A few rain and/or snow showers may accompany the frontal passage on Monday, but no accumulation is expected. The main headline will be the tremendous cold that will send temperatures plunging to near zero by Tuesday morning. Locations right along the bay shore will probably stay in the single digits to around 10 degrees. Highs on Tuesday may stay in the teens with a wind chill below zero. Fortunately, the cold snap will be short-lived as the mercury recovers quickly into the 30s on Thursday and 40s by Friday. A storm system may bring rain or mixed precipitation to the area Thursday night into Friday. Right now, next weekend looks fair with highs in the 40s to lower 50s and overnight lows above freezing.

On the Maryland portion of Chesapeake Bay, a Small Craft Advisory is in effect from 6 p.m. this evening through Monday afternoon. Winds today will come out of the east at 10 knots with waves one foot or less. Visibility may be reduced in rain and fog. Winds tonight will come out of the south at 10 to 15 knots with waves from 1 to 2 feet. Visibility may be reduced in rain and fog. Winds on Monday will come out of the northwest at 15 to 25 knots with gusts over 40 knots and waves from 2 to 4 feet. Visibility may be reduced in rain and/or snow showers. Winds on Monday night will come out of the northwest at 15 to 25 knots with gusts over 30 knots and waves from 2 to 4 feet. Winds on Tuesday will come out of the west at 10 to 20 knots with gusts over 30 knots and waves from 2 to 4 feet. 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 5 is 42 degrees and the average low is 25 degrees. The records at Baltimore on this date are 69 degrees in 1997 and 1 degree in 1877. Today's sunrise will occur at 7:26 and the sunset will occur at 4:58. 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.