Forecast Details for Garnavillo, IA

Recent Locations: Garnavillo, IA  
Tonight: Scattered showers before 11pm. Patchy fog after 5am. Otherwise, cloudy, then gradually becoming partly cloudy, with a low around 44. Northwest wind 7 to 13 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Friday: Patchy fog before 8am. Otherwise, sunny, with a high near 69. West wind around 6 mph becoming southeast in the afternoon.
Friday Night: Mostly clear, with a low around 46. Southeast wind 6 to 8 mph.
Saturday: A 50 percent chance of showers. Increasing clouds, with a high near 64. Southeast wind 7 to 10 mph becoming northwest in the afternoon. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday Night: A 20 percent chance of showers before 1am. Partly cloudy, with a low around 44. North wind 7 to 10 mph.
Sunday: Sunny, with a high near 68. North wind 8 to 10 mph becoming east in the afternoon.
Sunday Night: A 20 percent chance of showers after 1am. Partly cloudy, with a low around 48. East wind 7 to 11 mph.
Monday: A 30 percent chance of showers, mainly after 1pm. Mostly sunny, with a high near 73. Breezy, with a southeast wind 13 to 16 mph, with gusts as high as 25 mph.
Monday Night: Showers and possibly a thunderstorm. Low around 57. Breezy, with a southeast wind 17 to 20 mph, with gusts as high as 29 mph. Chance of precipitation is 80%.
Tuesday: Showers likely and possibly a thunderstorm. Mostly sunny, with a high near 74. Breezy, with a southwest wind 15 to 18 mph, with gusts as high as 29 mph. Chance of precipitation is 60%.
Tuesday Night: A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 52. Breezy, with a southwest wind 10 to 16 mph, with gusts as high as 24 mph.
Wednesday: A 30 percent chance of showers. Mostly sunny, with a high near 73. Breezy, with a southwest wind 13 to 16 mph, with gusts as high as 25 mph.
Wednesday Night: A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 49. West wind 11 to 15 mph, with gusts as high as 23 mph.
Thursday: A 30 percent chance of showers. Mostly sunny, with a high near 66. Breezy, with a northwest wind 13 to 16 mph, with gusts as high as 24 mph.

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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.

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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