Our Proprietary 10-Day Forecast

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Current warnings over Union, South Carolina
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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 Union, South Carolina 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 Union, South Carolina 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 Union County, SC

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 Union, South Carolina

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 Union, SC 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 Union, SC

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 Union, SC, 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 Union, South Carolina

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 Union County, South Carolina

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)
Union, South Carolina Climate Summary

General Climate


    •   Humid subtropical climate
    •   Warm, humid summers with frequent thunderstorms
    •   Mild, wet winters

Temperature


    •   Average annual temperature: 60.8°F (16.0°C)
    •   Average summer temperature (June-August): 78.8°F (26.0°C)
    •   Average winter temperature (December-February): 42.9°F (6.1°C)
    •   Record high temperature: 105°F (40.6°C)
    •   Record low temperature: -3°F (-19.4°C)

Precipitation


    •   Average annual precipitation: 45.1 inches (114.6 cm)
    •   Average number of rainy days per year: 110
    •   Most precipitation occurs in March and July
    •   Snowfall is rare, averaging less than 1 inch per year

Humidity


    •   High humidity throughout the year
    •   Average relative humidity: 75%

Wind


    •   Prevailing wind direction: Southwest
    •   Average wind speed: 6.3 mph (10.1 km/h)

Sunshine


    •   Average annual sunshine: 2,470 hours
    •   Sunniest months: May and June

Other Climate Features


    •   Union is located in USDA Plant Hardiness Zone 8a
    •   The growing season lasts an average of 240 days
    •   Tornadoes are a rare occurrence, but can occur during the spring and summer months

Summary


Union, South Carolina experiences a humid subtropical climate with warm, humid summers and mild, wet winters. Precipitation is abundant throughout the year, and humidity is high. Sunshine is plentiful, and the growing season is long.

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

    •   Union County is home to the largest granite quarry in the world, the Pacolet Quarry.

    •   The county is part of the Piedmont ecoregion, known for its rolling hills, forests, and rivers.

    •   The Enoree River, which flows through Union, is a popular spot for fishing and kayaking.

Science

    •   Union is the birthplace of Dr. James B. Duke, the founder of Duke University and Duke Energy.

    •   The county is home to the Union County Science Center, which offers educational programs and exhibits on science and technology.

    •   The South Carolina Governor's School for Science & Mathematics is located in Union, providing advanced STEM education to high school students.

Personalities

    •   Mary McLeod Bethune, a civil rights activist and educator, was born in Union County in 1875.

    •   William \

Tourist Attractions
1. Union County Museum: This museum tells the story of Union County, South Carolina, from its Native American roots to the present day. Exhibits include artifacts from the county's agricultural, industrial, and social history.

2. Jonesville Historic District: This district is home to a number of historic buildings, including the Jonesville Depot, which was built in 1858. The district is also home to a number of shops and restaurants.

3. Lockhart Mill Historic Village: This village is a living history museum that tells the story of the textile industry in Union County. Visitors can tour the mill, see demonstrations of textile machinery, and learn about the lives of the mill workers.

Nearby Cities:

Buffalo, SC
Whitmire, SCPacolet, SC
Clinton, SCRoebuck, SC
Chester, SCJoanna, SC
Cowpens, SCWoodruff, SC
Spartanburg, SCCharlotte, NC
Columbia, SCAthens, GA
Asheville, NCConcord, NC
Gastonia, NCRock Hill, SC
Johnson City, TNGreenville, SC
Huntersville, NCKannapolis, NC
Augusta, GA