Our Proprietary 10-Day Forecast

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Current warnings over Saint Charles, Maryland
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<p>Warnings from F5Weather</a></div>

United States weather warnings are issued by various organizations under NOAA. Most from the National Weather Service, but also Storm Prediction Center and National Hurricane Center.

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Current radar over Saint Charles, Maryland red dot
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<p>Live radar from F5Weather</a></div>

Our radar is based off of US NEXRAD and Canadian weather radar sites through the quality controlled MRMS system. It compiles various sources for radar data and filters out erroneous returns such as sun spikes and ground clutter. We then colorize the precipitation based on our methods for determining precipitation type. Rain is in shades of green, mixed precipitation and freezing rain in shades of pink and snow is in shades of blue.

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Current satellite over Saint Charles, Maryland red dot
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<p>Live satellite from F5Weather</a></div>

Our satellite is from the GOES-16. It is color enhanced by using a geocolor terrain background during the day and black marble city lights at night. The daytime satellite data is Visible satellite imagery, and nighttime uses Infrared bands. The bluish clouds are fog and low cloud. The whiteest clouds are the coldest, highest cloud tops.

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Current surface weather map around Charles County, MD

This surface map is from the HRRR computer model. It is a 1-hour forecast, updated hourly, which is a good estimate of the current surface conditions. This map shows the current high and low pressure centers, pressure isobar contours, wind streamlines and thickness contours. It also shows the currently depicted preciptiation estimates, although this should not be a substitute for actual live radar. The purple dashed contour is the 5400m thickness line, which is often a good proxy for the rain/snow line.

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Temperatures right now near Saint Charles, Maryland

This is the latest surface temperatures as depicted by the HRRR computer model, updated hourly. Although these are not actual observations, this model is a very good representation of current conditions as it factors in observations, terrain and physics to give you more detailed temperatures in areas that do not have reporting weather stations. For the latest reports at specific locations, like in Saint Charles, MD please see our current conditions data on the left and right side of this page, or go to our current conditions page.

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Surface wind speed map over Saint Charles, MD

This map shows the latest HRRR computer model winds. This depiction of the current wind directions and speeds is an estimate from the computer model. For actual observations in Saint Charles, MD, see the current conditions data on the left and right side of this page, or go to our current conditions page.

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Regional 24 hour rainfall expected near Saint Charles, Maryland

This is a forecast of the amount of precipitation expected over the next 24 hours from the HRRR weather forecast model. This is only one forecast depiction, and you should check other models to get a better idea of what may happen. You can view this and other models in more detail on our main weather forecast maps page. There, you will also be able to look at forecasts beyond just 24 hours and look at forecasts out to as far as 16 days.

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Area snowfall accumulation expected around Charles County, Maryland

This is snowfall forecast, with amounts anticipated in the next 24 hours. This guidance is from the HRRR weather model. For more model forecasts out to 16 days, visit our main weather forecast maps page.

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These are Convective Outlooks from the Storm Prediction Center. Click to see Days 1-3 broken down into Tornado, Wind and Hail threats, as well as days 5-8 outlooks.

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Atlantic Hurricane and Tropical Storm Tracking Map
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<p>Hurricane Tracking from F5Weather</a></div>

Our hurricane tracking map monitors for any current or forecast tropical disturbances in the Atlantic. (See our Pacific Hurricane Tracker) Various hurricane models will draw a 'spaghetti plot' in the Atlantic Basin when a disturbance is forecast or exists, showing the system's forecast track. Once a storm has developed, the National Hurricane Center will forecast their official track. This will show up on the map along with the storm's current intensity, track and name. We will also plot some of the storm's vitals and of course the spaghetti plots from the models along with the NHC forecast track will give you an idea of where it's heading, and its forecast intensity with time.

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To view the latest computer models, visit f5wx.com for access to the weather maps and guidance that meteorologists use to make their forecasts.
 
Get access to:
  • European ECMWF HRES
  • American GFS
  • Canadian GDPS GEM
  • German DWD ICON
  • British MetOffice's UKMET Unified Model
  • American NAM
  • American HRRR
  • American NBM - National Blend of Models
  • GEFS, GEPS, MOGREPS & European Ensembles
  • Probabilities & Averages
  • 3-Ensemble Mean & more!
View Skew-T soundings, textual data tables for your location, and of course maps! Weather forecast maps of the basics like temperature, wind, pressure, humidity, dew point, cloud cover, simulated radar, travel weather, rainfall and snow are available. More advanced users can also get use out of our severe weather & tornado threat maps, as well as upper air & shear graphics.
 
See the latest forecast data as the models update.
 
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Climate Summary
(made with AI, use with caution)
Saint Charles, Maryland

Climate Summary

Saint Charles, Maryland, experiences a humid subtropical climate, characterized by hot, humid summers and mild, wet winters.

Temperature

    •   Average Annual Temperature

56.5°F (13.6°C)

    •   Average Summer Temperature

77.4°F (25.2°C)

    •   Average Winter Temperature

35.6°F (2.0°C)

    •   Record High Temperature

106°F (41.1°C)

    •   Record Low Temperature

-11°F (-23.9°C)

Precipitation

    •   Average Annual Precipitation

43.9 inches (111.5 cm)

    •   Average Monthly Precipitation

3.6 inches (9.1 cm)

    •   Wettest Month

July (4.6 inches / 11.7 cm)

    •   Driest Month

February (2.6 inches / 6.6 cm)

Snowfall

    •   Average Annual Snowfall

16.9 inches (43 cm)

    •   Snowiest Month

January (5.5 inches / 14 cm)

Other Climate Characteristics

    •   Relative Humidity

High throughout the year, averaging around 70%

    •   Sunshine

Receives an average of 210 sunny days per year

    •   Wind

Prevailing winds blow from the west-northwest

    •   Tornado Risk

Moderate, with an average of 1 tornado per 10,000 square miles per year

    •   Hurricane Risk

Low, but can be affected by hurricanes passing offshore

Climate Trends

    •   Rising Temperatures

Average temperatures have increased by about 1.5°F (0.8°C) since the late 19th century.

    •   Increasing Precipitation

Annual precipitation has increased by about 5% since the late 19th century.

    •   More Extreme Weather Events

The frequency and intensity of extreme weather events, such as heat waves, droughts, and floods, have increased in recent decades.

Facts & Historical Information
(made with AI, use with caution)
Natural History and Science

  • Point Lookout State Park:

    Home to a diverse ecosystem, including coastal forests, tidal marshes, and beaches, supporting a variety of wildlife.

  • Patuxent River Naval Air Station:

    A major research and development center for the U.S. Navy, focusing on aviation and environmental science.

  • Chesapeake Bay Program:

    A partnership of states and federal agencies working to restore and protect the Chesapeake Bay ecosystem.

    Historical Personalities

  • Captain John Smith:

    Explored the Chesapeake Bay in 1608 and named St. Charles after King Charles I of England.

  • Harriet Tubman:

    A renowned abolitionist and conductor on the Underground Railroad, who lived and worked in St. Charles.

  • Dr. James McCubbin Lingan:

    A prominent physician and naturalist who collected and studied the local flora and fauna.

    • Tourist Attractions
    1.Point Lookout State Park

    is a 500-acre park located on the southernmost tip of Maryland's Atlantic coast. The park is home to a variety of natural and historical attractions, including a Civil War fort, a lighthouse, and a museum.

    2.St. Mary's City

    is a historic town located on the St. Mary's River. The town was founded in 1634 and was the first permanent European settlement in Maryland. St. Mary's City is home to a number of historic buildings, including the State House, the Governor's Mansion, and the Old St. Mary's City Chapel.

    3.Piney Point Lighthouse

    is a historic lighthouse located on the Potomac River. The lighthouse was built in 1836 and is one of the oldest lighthouses in Maryland. Piney Point Lighthouse is open to the public for tours.

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