Our Proprietary 10-Day Forecast

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Current warnings over De Graff, Ohio
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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 De Graff, Ohio 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 De Graff, Ohio 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 Logan County, OH

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 De Graff, Ohio

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 De Graff, OH 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 De Graff, OH

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 De Graff, OH, 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 De Graff, Ohio

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 Logan County, Ohio

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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  • German DWD ICON
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  • 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.
 
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Climate Summary
(made with AI, use with caution)
De Graff, Ohio Climate Summary

General Climate

Humid continental climate with hot, humid summers and cold, snowy winters.

Temperature

    •   Average annual temperature: 51.5°F (10.8°C)
    •   Average summer temperature (June-August): 72.6°F (22.6°C)
    •   Average winter temperature (December-February): 28.9°F (-1.7°C)

Precipitation

    •   Average annual precipitation: 37.8 inches (960 mm)
    •   Average number of rainy days per year: 110
    •   Average snowfall: 22.5 inches (57 cm)

Humidity

    •   Average relative humidity: 70%
    •   High humidity during summer months

Wind

    •   Prevailing wind direction: West-southwest
    •   Average wind speed: 9.2 mph (14.8 km/h)

Sunshine

    •   Average annual sunshine: 2,050 hours
    •   Most sunshine during summer months

Extreme Weather Events

    •   Tornadoes

De Graff is located in an area with a moderate risk of tornadoes.

    •   Severe thunderstorms

Common during spring and summer months, bringing heavy rain, hail, and lightning.

    •   Winter storms

Snowstorms and ice storms can occur during winter months, causing travel disruptions and power outages.

Climate Change Impacts

    •   Rising temperatures and increased frequency of extreme weather events are expected in the future.
    •   Increased precipitation and flooding are also predicted.
    •   Changes in climate may impact local agriculture, ecosystems, and infrastructure.

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

    •   De Graff is located in the Miami Valley, a region known for its fertile soil and abundant wildlife.

    •   The area was once home to vast forests, prairies, and wetlands, providing habitat for numerous species.

    •   The Mad River, which flows through De Graff, is a major tributary of the Ohio River and supports a diverse aquatic ecosystem.

Science

    •   In the 19th century, De Graff was a center for scientific research and education.

    •   The town was home to the De Graff Institute, a renowned academy that offered courses in science, mathematics, and engineering.

    •   Several prominent scientists, including Asa Gray and Edward Orton, taught at the institute.

Personalities

  • Edward Orton Sr.

    (1829-1899): A geologist and chemist who founded the Ohio State University Department of Geology. He was also the first president of the Geological Society of America.

  • Asa Gray

    (1810-1888): A botanist and taxonomist who was one of the most influential scientists of his time. He was a professor at Harvard University and a close friend of Charles Darwin.

    • Tourist Attractions
    1.Indian Lake State Park:

    A sprawling park with a 5,800-acre lake, offering opportunities for boating, fishing, swimming, camping, and hiking.

    2.Piatt Castles:

    A pair of historic stone castles built in the late 19th century, offering tours and special events.

    3.Indian Lake Amusement Park:

    A family-friendly amusement park with rides, games, and water attractions.

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