Forecast Details for Knox, IN

Recent Locations: Knox, IN

Current Alerts for Knox, IN: Air Quality Alert Special Weather Statement

Today: A 30 percent chance of showers and thunderstorms, mainly before 8am. Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 73. Northeast wind 5 to 10 mph.

Tonight: Areas of fog after 1am. Otherwise, mostly cloudy, with a low around 61. Northeast wind around 5 mph.

Friday: Isolated showers between 1pm and 4pm, then a slight chance of showers and thunderstorms after 4pm. Areas of fog before 8am. Otherwise, mostly cloudy, with a high near 75. Northeast wind around 5 mph. Chance of precipitation is 20%.

Friday Night: A slight chance of thunderstorms before 7pm. Mostly cloudy, with a low around 55. North wind around 5 mph. Chance of precipitation is 10%.

Saturday: A slight chance of showers between 1pm and 4pm, then a slight chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 77. Northeast wind around 5 mph. Chance of precipitation is 20%.

Saturday Night: A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 55. Chance of precipitation is 20%.

Sunday: A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 77. Chance of precipitation is 50%.

Sunday Night: A chance of showers and thunderstorms before 1am, then a slight chance of showers. Partly cloudy, with a low around 55. Chance of precipitation is 30%.

Monday: A 30 percent chance of showers, mainly after 1pm. Sunny, with a high near 74.

Monday Night: Mostly clear, with a low around 53.

Tuesday: A 20 percent chance of showers. Sunny, with a high near 73.

Tuesday Night: Mostly clear, with a low around 52.

Wednesday: Sunny, with a high near 78.

Want more detail? Get the Complete 7 Day and Night Detailed Forecast!

Current U.S. National Radar--Current

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National Weather Forecast--Current

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National Weather Forecast for Tomorrow

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North America Water Vapor (Moisture)

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Weather Topic: What are Shelf Clouds?

Home - Education - Cloud Types - Shelf Clouds

Shelf Clouds Next Topic: Sleet

A shelf cloud is similar to a wall cloud, but forms at the front of a storm cloud, instead of at the rear, where wall clouds form.

A shelf cloud is caused by a series of events set into motion by the advancing storm; first, cool air settles along the ground where precipitation has just fallen. As the cool air is brought in, the warmer air is displaced, and rises above it, because it is less dense. When the warmer air reaches the bottom of the storm cloud, it begins to cool again, and the resulting condensation is a visible shelf cloud.

Next Topic: Sleet

Weather Topic: What is Snow?

Home - Education - Precipitation - Snow

Snow Next Topic: Stratocumulus Clouds

Snow is precipitation taking the form of ice crystals. Each ice crystal, or snowflake, has unique characteristics, but all of them grow in a hexagonal structure. Snowfall can last for sustained periods of time and result in significant buildup of snow on the ground.

On the earth's surface, snow starts out light and powdery, but as it begins to melt it tends to become more granular, producing small bits of ice which have the consistency of sand. After several cycles of melting and freezing, snow can become very dense and ice-like, commonly known as snow pack.

Next Topic: Stratocumulus Clouds