Brian's exclusive forecast for Annapolis: Clear and cool overnight with lows in the upper 40s inland to the mid 50s near the bay shore. Light winds becoming near calm. Sunny and pleasant on Sunday with afternoon highs in the mid to upper 70s. Light northwest winds becoming southerly. Variable cloudiness on Sunday night and not as cool with lows in the mid 50s. Considerable cloudiness on Monday with scattered rain showers and a high in the mid to upper 70s.
Canadian high pressure and calm winds will produce ideal radiational cooling overnight with some inland locations dropping into the upper 40s. Most areas along the bay shore will remain in the low to mid 50s. The high will continue to produce sunshine over the area on Sunday, but a return flow around the high will allow for thermometer readings to recover during the day with afternoon highs in the mid to upper 70s. Urban locations may touch 80 degrees. Clouds begin to overspread the region on Sunday night as a frontal system approaches from the west and will keep temperatures from falling as much as they will tonight. This front will continue to produce cloudiness and scattered showers during the day on Monday.
On the Maryland portion of Chesapeake Bay, there are no advisories currently in effect. Winds tonight will come out of the northwest at less than 10 knots with waves 1 foot or less. Winds on Sunday will come out of the south at less than 10 knots with waves of 1 foot or less. 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 September 14 is 79 degrees and the average low is 59. The records at Baltimore on this date are 94 degrees in 1931 and 42 degrees in 1975. 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.