Forecast Details for Decorah, IA

Recent Locations: Meridian, GA Inkom, ID Decorah, IA

Overnight: Mostly cloudy, with a low around 33. West wind around 6 mph.

Friday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 2pm. High near 45. Calm wind becoming east 5 to 9 mph in the afternoon. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

Friday Night: Showers and thunderstorms before 2am, then a chance of showers. Low around 37. East wind 8 to 10 mph becoming west after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

Saturday: A 40 percent chance of showers, mainly after 1pm. Mostly cloudy, with a high near 43. Breezy, with a west wind 10 to 18 mph, with gusts as high as 28 mph. New precipitation amounts of less than a tenth of an inch possible.

Saturday Night: Mostly cloudy, with a low around 31. Breezy, with a west wind 10 to 16 mph, with gusts as high as 25 mph.

Sunday: Mostly sunny, with a high near 51. Northwest wind 9 to 11 mph, with gusts as high as 20 mph.

Sunday Night: Partly cloudy, with a low around 32. Northwest wind around 8 mph.

Monday: Mostly sunny, with a high near 44. Breezy, with a northwest wind 9 to 16 mph, with gusts as high as 24 mph.

Monday Night: Mostly clear, with a low around 21. Northwest wind 9 to 14 mph becoming light north after midnight.

Tuesday: Mostly sunny, with a high near 46. Calm wind becoming south 5 to 9 mph in the morning.

Tuesday Night: A chance of rain and snow showers. Mostly cloudy, with a low around 35. Breezy, with a south wind 9 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 40%.

Wednesday: A 40 percent chance of showers. Partly sunny, with a high near 66. Breezy, with a south wind 17 to 21 mph, with gusts as high as 29 mph.

Wednesday Night: A 40 percent chance of showers. Mostly cloudy, with a low around 43. Breezy, with a south wind 14 to 16 mph becoming west after midnight. Winds could gust as high as 24 mph.

Thursday: A 50 percent chance of showers. Mostly cloudy, with a high near 56. Northwest wind 11 to 15 mph becoming northeast in the afternoon. Winds could gust as high as 23 mph.

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North America Water Vapor (Moisture)

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Weather Topic: What are Cumulus Clouds?

Home - Education - Cloud Types - Cumulus Clouds

Next Topic: Drizzle

Cumulus clouds are fluffy and textured with rounded tops, and may have flat bottoms. The border of a cumulus cloud is clearly defined, and can have the appearance of cotton or cauliflower.

Cumulus clouds form at low altitudes (rarely above 2 km) but can grow very tall, becoming cumulus congestus and possibly the even taller cumulonimbus clouds. When cumulus clouds become taller, they have a greater chance of producing precipitation.

Next Topic: Drizzle

Weather Topic: What is Evaporation?

Home - Education - Precipitation - Evaporation

Next Topic: Fog

Evaporation is the process which returns water from the earth back to the atmosphere, and is another crucial process in the water cycle.

Evaporation is the transformation of liquid into gas, and it happens because molecules are excited by the application of energy and turn into vapor. In order for water to evaporate it has to be on the surface of a body of water.

Next Topic: Fog