Our Proprietary 10-Day Forecast

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Current warnings over Penn Wynne, Pennsylvania
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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 Penn Wynne, Pennsylvania 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 Penn Wynne, Pennsylvania 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, PA

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 Penn Wynne, Pennsylvania

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 Penn Wynne, PA 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 Penn Wynne, PA

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 Penn Wynne, PA, 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 Penn Wynne, Pennsylvania

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, Pennsylvania

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.
 
See the latest forecast data as the models update.
 
F5Weather Maps

Climate Summary
(made with AI, use with caution)
Penn Wynne, PA Climate Summary

General Climate

    •   Humid subtropical climate
    •   Warm, humid summers
    •   Cold, snowy winters

Temperature

    •   Average annual temperature: 54.7°F (12.6°C)
    •   Average summer temperature (June-August): 75.2°F (24°C)
    •   Average winter temperature (December-February): 33.3°F (0.7°C)
    •   Record high temperature: 106°F (41.1°C)
    •   Record low temperature: -13°F (-25°C)

Precipitation

    •   Average annual precipitation: 44.7 inches (113.5 cm)
    •   Average monthly precipitation: 3.7 inches (9.4 cm)
    •   Most precipitation occurs in May and June
    •   Least precipitation occurs in February

Snowfall

    •   Average annual snowfall: 22.5 inches (57.2 cm)
    •   Most snowfall occurs in January and February

Sunshine

    •   Average annual sunshine: 2,500 hours
    •   Most sunshine occurs in July and August

Other Climate Features

    •   Growing season

180-200 days

    •   Hardiness zone

6b

    •   Humidity

High throughout the year, especially in summer

    •   Wind

Prevailing winds from the west

    •   Tornadoes

Rare, but possible

Climate Change Impacts

    •   Rising temperatures
    •   Increased frequency and intensity of extreme weather events, such as heat waves, droughts, and floods
    •   Changes in precipitation patterns, with more intense rainfall events and longer dry spells

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

    •   Penn Wynne is home to the historic Harriton House, a National Historic Landmark built in 1704. It was the home of Charles Thomson, the first Secretary of the Continental Congress.

    •   The neighborhood is surrounded by the rolling hills of the Wissahickon Valley, providing scenic views and opportunities for hiking and biking.

    •   The area is known for its abundant wildlife, including deer, foxes, and birds.

Science

    •   Penn Wynne was once home to the Franklin Institute Research Laboratories, a renowned research center that contributed significantly to the development of radar and other technologies.

    •   The neighborhood is also home to the Bryn Mawr College Observatory, which has played a role in astronomical research since the late 19th century.

Personalities

    •   Penn Wynne has been home to numerous notable figures, including:

    •   John Bartram, the renowned botanist who established Bartram's Garden in Philadelphia.

    •   William Penn, the founder of Pennsylvania, who owned land in the area.

    •   John D. Rockefeller Jr., the philanthropist and conservationist who donated land to create the Wissahickon Valley Park.

Tourist Attractions
1.Morris Arboretum

(Chestnut Hill, PA): A 92-acre botanical garden featuring diverse plant collections, historic buildings, and educational programs.

2.Valley Forge National Historical Park

(Valley Forge, PA): The site of George Washington's encampment during the American Revolutionary War, offering historical exhibits, guided tours, and scenic hiking trails.

3.Philadelphia Museum of Art

(Philadelphia, PA): A world-renowned art museum housing an extensive collection of paintings, sculptures, and decorative arts from various cultures and time periods.

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Millbourne, PA
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East Lansdowne, PADrexel Hill, PA
Bala-Cynwyd, PALansdowne, PA
Yeadon, PABryn Mawr, PA
Clifton Heights, PAAldan, PA
Darby, PASpringfield, PA
Broomall, PACollingdale, PA
Colwyn, PASharon Hill, PA
Brooklyn, NY
Queens, NYManhattan, NY
Manhattan, NYBaltimore, MD
Washington, DCStaten Island, NY
Newark, NJJersey City, NJ
Jamaica, NYYonkers, NY
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