Weak low pressure over southeast Virginia is producing cloudy conditions and widespread light rain showers on the western shore of Chesapeake Bay including the Annapolis area. At 9 a.m., temperatures are in the mid to upper 60s with a light east/northeast wind of less than 10 miles per hour. This low will continue to move north along the Atlantic coast today and then move out to sea. As we move through the late morning and afternoon hours, expect a continuation of cloudy conditions along with occasional showers. Precipitation will be on the light side for the most part, with a few isolated heavier showers in some areas. The clouds and rain will keep the mercury from rising all that much today, with highs mainly in the low to mid 70s. As the low pulls away from the Annapolis area tonight, we can expect a cloudy sky into the early morning hours on Monday with a light northerly wind and evening temperatures in the upper 60s. The effects of the departing low may allow cloudiness to persist over the Middle Atlantic region during the day on Monday, which would keep daytime highs in the upper 70s. However, high pressure will ultimately dominate our weather pattern this week along with more summer-like temperatures. The period Tuesday through Thursday will offer a mostly sunny sky with highs each day in the mid to upper 80s.
On the Maryland portion of Chesapeake Bay, a Small Craft Advisory is currently in effect through the afternoon. Winds today will come out of the northeast at 10 to 20 knots with wave heights of 1 to 2 feet. Winds tonight will shift to the north at 10 knots or less with wave heights of 1 foot or less. Tomorrow's winds will shift to the south at 10 knots with wave heights 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 August 17 is 85 degrees and the average low is 65. The records at Baltimore on this date are 100 degrees in 1997 and 53 degrees in 1979. 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.