Forecast Details for Louisville, KY

Recent Locations: Louisville, KY  
This Afternoon: A 30 percent chance of showers and thunderstorms. Sunny, with a high near 89. Southwest wind around 7 mph.
Tonight: A 30 percent chance of showers and thunderstorms, mainly before 7pm. Mostly clear, with a low around 73. South wind 3 to 5 mph.
Monday: Scattered showers, with thunderstorms also possible after 11am. Sunny, with a high near 89. Heat index values as high as 100. Southwest wind 3 to 7 mph. Chance of precipitation is 40%.
Monday Night: A 30 percent chance of showers and thunderstorms, mainly after 2am. Partly cloudy, with a low around 73. Southwest wind 3 to 5 mph.
Tuesday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 2pm. High near 86. Southwest wind 5 to 7 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday Night: Showers and possibly a thunderstorm before 8pm, then showers and thunderstorms likely between 8pm and 11pm, then showers likely and possibly a thunderstorm after 11pm. Low around 72. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday: Showers likely and possibly a thunderstorm. Partly sunny, with a high near 82. Chance of precipitation is 70%.
Wednesday Night: A chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 2am. Partly cloudy, with a low around 68. Chance of precipitation is 30%.
Thursday: Sunny, with a high near 85.
Thursday Night: Mostly clear, with a low around 65.
Friday: Sunny, with a high near 80.
Friday Night: Mostly clear, with a low around 60.
Saturday: Mostly sunny, with a high near 81.

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Current U.S. National Radar--Current

The Current National Weather Radar is shown below with a UTC Time (subtract 5 hours from UTC to get Eastern Time).

Current U.S. National Radar

National Weather Forecast--Current

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Today's National Weather Map

National Weather Forecast for Tomorrow

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North America Water Vapor (Moisture)

This map shows recent moisture content over North America. Bright and colored areas show high moisture (ie, clouds); brown indicates very little moisture present; black indicates no moisture.

North American Water Vapor Map

Weather Topic: What is Condensation?

Home - Education - Precipitation - Condensation

Condensation Next Topic: Contrails

Condensation is the process which creates clouds, and therefore it is a crucial process in the water cycle. Condensation is the change of matter from a state of gas into a state of liquid, and it happens because water molecules release heat into the atmosphere and become organized into a more closely packed structure, what we might see as water droplets.

Water is always present in the air around us as a vapor, but it's too small for us to see. When water undergoes the process of condensation it becomes organized into visible water droplets. You've probably seen condensation happen before on the surface of a cold drink!

Next Topic: Contrails

Weather Topic: What are Cumulonimbus Clouds?

Home - Education - Cloud Types - Cumulonimbus Clouds

Cumulonimbus Clouds Next Topic: Cumulus Clouds

The final form taken by a growing cumulus cloud is the cumulonimbus cloud, which is very tall and dense. The tower of a cumulonimbus cloud can soar 23 km into the atmosphere, although most commonly they stop growing at an altitude of 6 km.

Even small cumulonimbus clouds appear very large in comparison to other cloud types. They can signal the approach of stormy weather, such as thunderstorms or blizzards.

Next Topic: Cumulus Clouds