Our Proprietary 10-Day Forecast

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Current warnings over Olney, 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 Olney, 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 Olney, 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 Montgomery 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 Olney, 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 Olney, 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 Olney, 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 Olney, 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 Olney, 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 Montgomery 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.
 
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  • 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.
 
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Climate Summary
(made with AI, use with caution)
Olney, Maryland is located in a humid subtropical climate zone, characterized by hot, humid summers and mild winters. The area experiences all four seasons, with average temperatures ranging from 35°F (2°C) in January to 85°F (29°C) in July.

Temperature

    •   Average annual temperature: 55°F (13°C)
    •   Average summer temperature (June-August): 75°F (24°C)
    •   Average winter temperature (December-February): 35°F (2°C)
    •   Record high temperature: 106°F (41°C)
    •   Record low temperature: -15°F (-26°C)

Precipitation

    •   Average annual precipitation: 42 inches (107 cm)
    •   Average monthly precipitation: 3.5 inches (9 cm)
    •   Most precipitation occurs in May and June
    •   Least precipitation occurs in February and March

Snowfall

    •   Average annual snowfall: 18 inches (46 cm)
    •   Most snowfall occurs in January and February

Humidity

    •   Average annual relative humidity: 65%
    •   Humidity is highest in the summer months (June-August)
    •   Humidity is lowest in the winter months (December-February)

Wind

    •   Average wind speed: 10 mph (16 km/h)
    •   Prevailing wind direction: West-southwest

Climate Summary

Olney, Maryland experiences a humid subtropical climate with hot, humid summers and mild winters. The area receives moderate precipitation throughout the year, with the most precipitation occurring in the spring and summer months. Snowfall is common during the winter months, but it typically does not accumulate to significant levels. The humidity is generally high throughout the year, especially during the summer months. The prevailing wind direction is west-southwest.

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

    •   Olney is home to Rock Creek Regional Park, a vast green space with diverse flora and fauna, including bald eagles, deer, and wildflowers.

    •   The park is a popular destination for birdwatching, with over 200 species recorded.

    •   The Olney Brook stream runs through the park, providing habitat for aquatic life.

Science

    •   Olney is the birthplace of the Hubble Space Telescope, which was built at the Goddard Space Flight Center in nearby Greenbelt.

    •   The city is also home to the National Institute of Standards and Technology (NIST), a leading research institution in metrology, physics, and engineering.

Personalities

    •   John Carroll, the first Roman Catholic archbishop in the United States, lived in Olney in the 18th century.

    •   Francis Scott Key, who wrote the \

Tourist Attractions
1.Olney Theatre Center

A professional theater company that produces a variety of shows throughout the year, including musicals, comedies, and dramas.

2.Olney Manor Recreational Park

A 175-acre park with a variety of amenities, including a playground, picnic areas, a dog park, and a fishing pond.

3.Sandy Spring Museum

A museum that tells the story of the Sandy Spring community, from its founding in the 18th century to the present day.

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