Brian's exclusive forecast for Annapolis: Becoming mostly cloudy overnight with rain showers developing and a low in the upper 40s. Light north wind. Rain showers on Wednesday morning, then partial clearing during the afternoon with a high in the mid to upper 50s. Wind becoming northwest. Mostly clear and chilly on Wednesday night with a low in the upper 30s to lower 40s. Sunny on Thursday with a high in the mid 50s. Sunny but unseasonably cool on Friday with a high in the lower 50s. The extended outlook calls for a mostly sunny sky on Saturday and Sunday with lows in the upper 30s and highs in the upper 50s.
A cold front will move from west to east across Chesapeake Bay on Wednesday. Low pressure developing along the front will produce a period of rain showers from Tuesday evening through early Wednesday afternoon. Rain amounts will generally be less than 1/3 of an inch. Once the front clears the area, the wind will shift to the northwest and the sky will clear later in the day on Wednesday. High pressure builds over the Middle Atlantic region on Thursday and Friday with unseasonably chilly temperatures. Lows will dip into the mid to upper 30s and highs will only reach the lower to middle 50s. Cool October weather is expected to continue through the weekend with a slight moderation in temperatures.
On the Maryland portion of Chesapeake Bay, a Small Craft Advisory is in effect for Wednesday. Winds tonight will come out of the north at 10 knots with waves less than one foot. Winds on Wednesday will shift from north to northwest and increase to 10 to 20 knots with waves 1 to 3 feet. Winds on Wednesday night will come out of the northwest at 10 to 15 knots with gusts over 20 knots and waves from 1 to 3 feet. Visibilities may be reduced on Tuesday night and Wednesday due to rain showers. Marine weather information is provided only as a guide. Boaters should always stay tuned to the latest forecasts and advisories from the National Weather Service.
The average high temperature for October 22 is 65 degrees and the average low is 43 degrees. The records at Baltimore on this date are 85 degrees in 1979 and 31 degrees in 1952. 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.