Our Proprietary 10-Day Forecast

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Current warnings over Clay, 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 Clay, 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 Clay, 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 Lancaster 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 Clay, 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 Clay, 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 Clay, 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 Clay, 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 Clay, 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 Lancaster 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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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)
Clay, PA Climate Summary

Location

Chester County, Pennsylvania

Climate Type

Humid subtropical (Cfa)

Average Temperature

    •   Annual: 54.8°F (12.7°C)
    •   January: 32.2°F (0.1°C)
    •   July: 76.4°F (24.7°C)

Average Precipitation

    •   Annual: 43.9 inches (1115 mm)
    •   Driest month: February (2.6 inches)
    •   Wettest month: July (4.7 inches)

Snowfall

    •   Average annual snowfall: 22.7 inches (57.7 cm)
    •   Heaviest snowfall month: January (6.2 inches)

Other Climate Data

    •   Average humidity

66%

    •   Average wind speed

9 mph (14 km/h)

    •   Average number of sunny days

210

    •   Growing season

180-200 days

Climate Description

Clay, PA experiences a humid subtropical climate with hot, humid summers and cold, snowy winters. The average temperature ranges from 32.2°F in January to 76.4°F in July. Precipitation is fairly evenly distributed throughout the year, with the wettest months being May through September. Snowfall is common during the winter months, with an average of 22.7 inches per year.

The climate in Clay is influenced by its proximity to the Atlantic Ocean, which helps to moderate temperatures and provide moisture. The area is also located in the Appalachian Mountains, which can lead to occasional heavy rainfall and snowfall.

Climate Trends

Like many regions around the world, Clay, PA has been experiencing a gradual increase in average temperatures over the past few decades. This trend is expected to continue in the future, leading to more extreme weather events such as heat waves, droughts, and heavy rainfall.

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

    •   Clay is home to the Susquehanna River, a major waterway that supports a diverse ecosystem.

    •   The area is known for its rich fossil record, including marine fossils from the Devonian period.

    •   The surrounding hills are covered in forests, providing habitat for a variety of wildlife.

Science

    •   The Clay Minerals Society, a global organization dedicated to clay science, is headquartered in Clay.

    •   The town is also home to the Clay Research Center, which conducts research on clay minerals and their applications.

Personalities

  • Dr. Charles Milton Wetherill

    (1825-1871): A chemist and mineralogist who discovered the mineral \

    • Tourist Attractions
    1.Lancaster County Central Park

    (Lancaster, PA): A sprawling park with playgrounds, walking trails, a lake, and a miniature train.

    2.American Music Theatre

    (Lancaster, PA): A state-of-the-art theater featuring live Broadway-style shows and concerts.

    3.Ephrata Cloister

    (Ephrata, PA): A historic religious community founded in the 18th century, featuring a museum, gardens, and a working print shop.

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    Philadelphia, PA
    Baltimore, MDWashington, DC
    Staten Island, NYNewark, NJ
    Jersey City, NJArlington, VA
    Alexandria, VABorough Park, NY
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