Forecast Details for Garnavillo, IA

Recent Locations: Lowgap, NC Saint George, UT 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)

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.

Weather Topic: What are Nimbostratus Clouds?

Home - Education - Cloud Types - Nimbostratus Clouds

Nimbostratus Clouds Next Topic: Precipitation

A nimbostratus cloud is similar to a stratus cloud in its formless, smooth appearance. However, a nimbostratus cloud is darker than a stratus cloud, because it is thicker.

Unlike a stratus cloud, a nimbostratus cloud typically brings with it the threat of moderate to heavy precipitation. In some cases, the precipitation may evaporate before reaching the ground, a phenomenon known as virga.

Next Topic: Precipitation

Weather Topic: What is Rain?

Home - Education - Precipitation - Rain

Rain Next Topic: Shelf Clouds

Precipitation in the form of water droplets is called rain. Rain generally has a tendency to fall with less intensity over a greater period of time, and when rainfall is more severe it is usually less sustained.

Rain is the most common form of precipitation and happens with greater frequency depending on the season and regional influences. Cities have been shown to have an observable effect on rainfall, due to an effect called the urban heat island. Compared to upwind, monthly rainfall between twenty and forty miles downwind of cities is 30% greater.

Next Topic: Shelf Clouds