Our Proprietary 10-Day Forecast

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Current warnings over Sunnyvale, Texas
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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 Sunnyvale, Texas 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 Sunnyvale, Texas 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 Dallas County, TX

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 Sunnyvale, Texas

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 Sunnyvale, TX 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 Sunnyvale, TX

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 Sunnyvale, TX, 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 Sunnyvale, Texas

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 Dallas County, Texas

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.
 
Get access to:
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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.
 
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Climate Summary
(made with AI, use with caution)
Sunnyvale, Texas, located in Dallas County, experiences a humid subtropical climate, characterized by hot, humid summers and mild winters. Here's a summary of the climate conditions in Sunnyvale:1.Temperature


    •   Average Annual Temperature: 67.6°F (19.8°C)
    •   Average Summer Temperature (June-August): Highs in the mid-90s °F (35°C) and lows in the mid-70s °F (24°C)
    •   Average Winter Temperature (December-February): Highs in the mid-50s °F (13°C) and lows in the mid-30s °F (2°C)

2. Precipitation


    •   Average Annual Precipitation: 36.8 inches (935 mm)
    •   Most Precipitation Month: May (4.6 inches or 117 mm)
    •   Least Precipitation Month: January (1.9 inches or 48 mm)

3. Humidity


    •   The relative humidity is generally high throughout the year, with an average annual humidity of 74%.
    •   Humidity levels tend to be higher during the summer months, contributing to the hot and muggy conditions.

4. Sunshine


    •   Sunnyvale receives an average of 2,813 sunshine hours annually, with the sunniest months being June and July.

5. Severe Weather


    •   Sunnyvale is located in an area prone to severe weather, including thunderstorms, hail, and occasional tornadoes.
    •   The peak tornado season typically occurs from March to May, while hailstorms can occur throughout the year.

6. Seasonal Variations


    •   Spring (March-May): Temperatures start to rise, with increasing humidity and the possibility of severe thunderstorms.
    •   Summer (June-August): Hot and humid conditions prevail, with occasional heat waves.
    •   Fall (September-November): Temperatures gradually cool down, with pleasant weather and occasional cool fronts.
    •   Winter (December-February): Mild temperatures with occasional cold spells and the possibility of freezing temperatures.

Overall, Sunnyvale's climate is characterized by warm to hot summers, mild winters, and ample precipitation throughout the year. Residents can enjoy outdoor activities year-round, with the changing seasons offering distinct weather patterns.

Facts & Historical Information
(made with AI, use with caution)
Sunnyvale, Texas, located in Dallas County, boasts a rich natural history and scientific legacy:

-Blackland Prairie Ecosystem:

Sunnyvale lies within the Blackland Prairie ecoregion, renowned for its fertile black soil and diverse flora and fauna.

-Fossil Discoveries:

The area has yielded significant fossil finds, including ancient marine creatures and saber-toothed cats.

-Pioneers in Radiation Therapy:

In the 1950s, Sunnyvale became home to the Texas A&M Cyclotron Institute, a pioneer in radiation therapy for cancer.

-Dr. Robert H. Dicke:

The renowned physicist Dr. Robert H. Dicke, known for his contributions to cosmology, lived and worked in Sunnyvale.

-Nature Preserve:

The 25-acre Sunnyvale Nature Preserve offers hiking trails through native Blackland Prairie habitat, showcasing its ecological diversity.

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