Our Proprietary 10-Day Forecast

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Current warnings over Carroll Valley, 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 Carroll Valley, 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 Carroll Valley, 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 Adams 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 Carroll Valley, 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 Carroll Valley, 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 Carroll Valley, 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 Carroll Valley, 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 Carroll Valley, 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 Adams 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)
Carroll Valley, PA Climate Summary

Location

Carroll Valley, Pennsylvania (40.06°N, 77.33°W)

Climate Zone

Humid subtropical (Köppen climate classification: Cfa)

Temperature

    •   Average annual temperature: 53.3°F (11.8°C)
    •   Average January temperature: 30.8°F (-0.7°C)
    •   Average July temperature: 73.9°F (23.3°C)
    •   Record low temperature: -18°F (-28°C)
    •   Record high temperature: 98°F (37°C)

Precipitation

    •   Average annual precipitation: 45.6 inches (116 cm)
    •   Average monthly precipitation: 3.8 inches (9.7 cm)
    •   Wettest month: May (4.5 inches or 11.4 cm)
    •   Driest month: February (2.8 inches or 7.1 cm)
    •   Average annual snowfall: 25.2 inches (64 cm)

Humidity

    •   Average relative humidity: 73%
    •   Highest humidity: July (79%)
    •   Lowest humidity: January (65%)

Wind

    •   Average wind speed: 10.3 mph (16.6 km/h)
    •   Prevailing wind direction: Southwest

Sunshine

    •   Average annual sunshine hours: 2,594 hours
    •   Sunniest month: July (285 hours)
    •   Cloudiest month: December (165 hours)

Other Climate Characteristics

    •   Growing season

180-200 days

    •   Hardiness zone

6a

    •   Average number of frost-free days

200-220 days

Climate Extremes

    •   Extreme heat

Heat index values can exceed 100°F (38°C) during summer months.

    •   Extreme cold

Wind chill values can fall below -20°F (-29°C) during winter months.

    •   Heavy rainfall

Thunderstorms can bring heavy downpours, leading to flooding.

    •   Snowfall

Snowfall amounts can vary significantly from year to year.

    •   Ice storms

Icing can occur during winter months, causing power outages and hazardous driving conditions.

Facts & Historical Information
(made with AI, use with caution)
Carroll Valley, nestled in the Blue Ridge Mountains, boasts a rich natural history and scientific significance.

Natural History

    •   The valley is home to over 1,000 acres of protected forest, teeming with diverse flora and fauna.

    •   It serves as a migratory corridor for birds, including the endangered cerulean warbler.

    •   The nearby Catoctin Mountain Park offers hiking trails through ancient hemlock forests and cascading waterfalls.

Science

    •   The National Radio Astronomy Observatory (NRAO) operates a satellite tracking station in Carroll Valley.

    •   The University of Maryland maintains a research facility at the valley's edge, studying environmental science and conservation.

    •   The Smithsonian Institution conducted extensive archaeological surveys in the area, uncovering evidence of Native American settlements dating back thousands of years.

Personalities

    •   John Carroll, a prominent Catholic bishop, established a summer retreat for priests in the valley in the 1800s, giving rise to its name.

    •   Henry David Thoreau, the renowned naturalist, visited Carroll Valley in 1854 and wrote about its scenic beauty.

    •   Dr. Charles E. Rosenow, a pioneering cardiologist, established a world-renowned heart clinic in the valley in the early 20th century.

Tourist Attractions
1.Carroll Valley Resort

is a family-friendly resort with a variety of activities to enjoy, including golf, swimming, tennis, hiking, and biking. The resort also has a spa and several restaurants.

2.Gettysburg National Military Park

is a historic site that commemorates the Battle of Gettysburg, one of the most important battles of the American Civil War. The park has a museum, a visitor center, and several walking trails.

3.Ski Liberty

is a ski resort that offers skiing and snowboarding trails for all levels of experience. The resort also has a snow tubing park and a terrain park.

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Biglerville, PALittlestown, PA
Mount Pleasant, PARobinwood, MD
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