Forecast Details for Ankeny, IA

Recent Locations: Hume, CA Angle Inlet, MN Ankeny, IA

Today: A 40 percent chance of showers, mainly after 4pm. Cloudy, with a high near 49. Breezy, with an east wind 15 to 17 mph, with gusts as high as 26 mph. New precipitation amounts of less than a tenth of an inch possible.

Tonight: Showers before 10pm, then showers and possibly a thunderstorm between 10pm and 4am, then showers after 4am. Steady temperature around 44. Breezy, with an east wind 15 to 17 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.

Thursday: Showers and possibly a thunderstorm before 4pm, then showers likely. High near 64. Breezy, with a southeast wind 14 to 20 mph becoming west southwest in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

Thursday Night: Partly cloudy, with a low around 38. Breezy, with a west wind 6 to 16 mph becoming northeast after midnight. Winds could gust as high as 24 mph.

Friday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1pm. High near 66. East wind 8 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Friday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 36. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.

Saturday: A 20 percent chance of showers before 1pm. Mostly cloudy, with a high near 47. Windy.

Saturday Night: Mostly cloudy, with a low around 30. Windy.

Sunday: Sunny, with a high near 53.

Sunday Night: Mostly clear, with a low around 34.

Monday: Mostly sunny, with a high near 61.

Monday Night: Partly cloudy, with a low around 32.

Tuesday: Mostly sunny, with a high near 55.

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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 is Condensation?

Home - Education - Precipitation - 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