Forecast Details for Garnavillo, IA

Recent Locations: Debord, KY Dana Point, CA Garnavillo, IA

Today: Increasing clouds, with a high near 50. Breezy, with an east wind 11 to 16 mph.

Tonight: Showers, with thunderstorms also possible after 1am. Low around 36. Breezy, with an east wind 17 to 20 mph, with gusts as high as 29 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.

Thursday: Showers, with thunderstorms also possible after 10am. High near 61. Breezy, with an east wind 15 to 18 mph becoming south in the afternoon. Winds could gust as high as 28 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.

Thursday Night: A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am. Mostly cloudy, with a low around 35. Breezy, with a southwest wind 9 to 18 mph becoming west after midnight. Winds could gust as high as 26 mph. Chance of precipitation is 40%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Friday: Showers likely and possibly a thunderstorm, mainly after 4pm. Partly sunny, with a high near 61. Northwest wind 6 to 11 mph becoming east in the afternoon. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Friday Night: Showers and possibly a thunderstorm. Low around 39. East wind around 14 mph becoming southwest after midnight. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

Saturday: A 30 percent chance of showers, mainly before 1pm. Mostly cloudy, with a high near 46. Breezy, with a west wind 14 to 20 mph, with gusts as high as 28 mph.

Saturday Night: Mostly cloudy, with a low around 29. Breezy, with a west wind 18 to 22 mph.

Sunday: Mostly sunny, with a high near 48. Breezy, with a northwest wind 13 to 18 mph, with gusts as high as 26 mph.

Sunday Night: A slight chance of rain and snow showers after 1am. Partly cloudy, with a low around 29. Northwest wind 6 to 10 mph becoming southwest after midnight. Chance of precipitation is 20%.

Monday: A 40 percent chance of showers. Mostly sunny, with a high near 52. Southwest wind 6 to 11 mph becoming northwest in the afternoon.

Monday Night: A 30 percent chance of showers. Partly cloudy, with a low around 29. North wind 8 to 10 mph.

Tuesday: Partly sunny, with a high near 47. North wind 8 to 10 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 are Mammatus Clouds?

Home - Education - Cloud Types - Mammatus Clouds

Mammatus Clouds Next Topic: Nimbostratus Clouds

A mammatus cloud is a cloud with a unique feature which resembles a web of pouches hanging along the base of the cloud.

In the United States, mammatus clouds tend to form in the warmer months, commonly in the Midwest and eastern regions.

While they usually form at the bottom of a cumulonimbis cloud, they can also form under altostratus, altocumulus, stratocumulus, and cirrus clouds. Mammatus clouds warn that severe weather is close.

Next Topic: Nimbostratus Clouds

Weather Topic: What is Precipitation?

Home - Education - Precipitation - Precipitation

Next Topic: Rain

Precipitation can refer to many different forms of water that may fall from clouds. Precipitation occurs after a cloud has become saturated to the point where its water particles are more dense than the air below the cloud.

In most cases, precipitation will reach the ground, but it is not uncommon for precipitation to evaporate before it reaches the earth's surface. When precipitation evaporates before it contacts the ground it is called Virga. Graupel, hail, sleet, rain, drizzle, and snow are forms of precipitation, but fog and mist are not considered precipitation because the water vapor which constitutes them isn't dense enough to fall to the ground.

Next Topic: Rain