Forecast Details for Defiance, IA

Recent Locations: State Line, PA Windfall, IN Defiance, IA

Today: A slight chance of snow showers before 3pm, then a chance of rain showers. Mostly cloudy, with a high near 39. Southeast wind 13 to 16 mph, with gusts as high as 24 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

Tonight: A chance of showers or drizzle before 7pm, then a chance of drizzle between 7pm and 3am. Patchy fog between 11pm and midnight. Otherwise, mostly cloudy, then gradually becoming mostly clear, with a steady temperature around 38. Breezy, with a southeast wind 14 to 21 mph, with gusts as high as 31 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

Wednesday: A 40 percent chance of showers. Mostly sunny, with a high near 63. Windy, with a south wind 17 to 25 mph becoming west in the afternoon. Winds could gust as high as 36 mph.

Wednesday Night: A 20 percent chance of showers. Partly cloudy, with a low around 35. West northwest wind 5 to 8 mph becoming calm after midnight.

Thursday: Showers likely, with thunderstorms also possible after 4pm. Mostly cloudy, with a high near 57. East wind 3 to 8 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Thursday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 35. Northeast wind 6 to 8 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Friday: A 20 percent chance of showers. Partly sunny, with a high near 57. Northeast wind 6 to 9 mph.

Friday Night: A chance of showers. Mostly cloudy, with a low around 41. East wind around 7 mph.

Saturday: Showers likely and possibly a thunderstorm. Cloudy, with a high near 64. East southeast wind 9 to 16 mph, with gusts as high as 24 mph.

Saturday Night: Showers likely and possibly a thunderstorm. Cloudy, with a low around 54. South southeast wind 14 to 16 mph, with gusts as high as 25 mph.

Sunday: Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 70. Breezy, with a south wind 15 to 21 mph, with gusts as high as 30 mph.

Sunday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 54. South wind 13 to 16 mph, with gusts as high as 25 mph.

Monday: A chance of showers and thunderstorms. Mostly sunny, with a high near 74. South southwest wind 11 to 16 mph, with gusts as high as 24 mph.

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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