Our Proprietary 10-Day Forecast

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Current warnings over Cornwall, 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 Cornwall, 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 Cornwall, 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 Lebanon 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 Cornwall, 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 Cornwall, 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 Cornwall, 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 Cornwall, 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 Cornwall, 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 Lebanon 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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  • 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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F5Weather Maps

Climate Summary
(made with AI, use with caution)
Cornwall, PA Climate Summary

Location

Lebanon County, Pennsylvania, USA

Climate Zone

Humid subtropical (Köppen Cfa)

Average Temperature

    •   Annual: 54.2°F (12.3°C)
    •   January: 31.2°F (-0.4°C)
    •   July: 77.0°F (25.0°C)

Average Precipitation

    •   Annual: 45.0 inches (1143 mm)
    •   Driest month: February (2.6 inches / 66 mm)
    •   Wettest month: May (4.5 inches / 114 mm)

Snowfall

    •   Annual: 25.0 inches (63.5 cm)

Other Climate Data

    •   Average humidity

70%

    •   Average wind speed

9 mph (14 km/h)

    •   Growing season

170 days (April 24     •   October 12)

    •   Hardiness zone

6b

Climate Characteristics

    •   Warm, humid summers with frequent thunderstorms
    •   Cold, snowy winters with occasional ice storms
    •   Moderate precipitation throughout the year, with a slight peak in May
    •   Occasional fog and low clouds, especially in the morning

Climate Trends

    •   Average temperatures have been increasing slightly over the past several decades.
    •   Precipitation patterns have not changed significantly.
    •   The frequency and intensity of extreme weather events, such as heat waves and heavy rainfall, is expected to increase in the future due to climate change.

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

    •   Cornwall is home to the Cornwall Iron Furnace, a National Historic Landmark that played a crucial role in the American Industrial Revolution.

    •   The Furnace Run Trail offers stunning views of the Furnace Run watershed, a haven for wildlife and native plants.

    •   The Cornwall Hills Nature Preserve protects over 1,000 acres of diverse habitats, including forests, meadows, and wetlands.

Science

    •   The Cornwall Magnetite Mine was once the largest producer of iron ore in the United States, attracting geologists and scientists from around the world.

    •   The Cornwall Mineral Museum showcases the area's rich geological heritage, featuring a collection of minerals and fossils.

    •   The Lebanon Valley College Environmental Center conducts research on local ecosystems and offers educational programs on environmental science.

Personalities

    •   Robert Coleman, a renowned historian and author, lived in Cornwall and wrote extensively about the area's history and folklore.

    •   Dr. Edward Hand, a physician and soldier, served as a general in the Continental Army during the American Revolutionary War. He was born and raised in Cornwall.

    •   Dr. George DeBenham, a prominent geologist, studied the Cornwall Iron Furnace and its geological significance.

Tourist Attractions
1. Cornwall Iron Furnace

2. Indian Echo Caverns

3. Swatara State Park

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Philadelphia, PA
Baltimore, MDWashington, DC
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