Forecast Details for Garnavillo, IA

Recent Locations: Almelund, MN Groton, CT Garnavillo, IA

Tonight: Patchy fog after 5am. Otherwise, mostly clear, with a low around 48. Light and variable wind.

Wednesday: Patchy fog before 8am. Otherwise, sunny, with a high near 78. Northeast wind 5 to 10 mph becoming south in the afternoon.

Wednesday Night: Partly cloudy, with a low around 58. South wind around 10 mph, with gusts as high as 18 mph.

Thursday: A slight chance of showers between 1pm and 4pm, then a slight chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 77. Breezy, with a south wind 11 to 21 mph, with gusts as high as 30 mph. Chance of precipitation is 20%.

Thursday Night: Showers and possibly a thunderstorm. Low around 56. Breezy, with a south wind 11 to 17 mph, with gusts as high as 26 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

Friday: A 40 percent chance of showers. Mostly sunny, with a high near 66. Southwest wind 10 to 13 mph becoming northwest in the afternoon. New precipitation amounts of less than a tenth of an inch possible.

Friday Night: Mostly clear, with a low around 43. Northwest wind 6 to 9 mph.

Saturday: Mostly sunny, with a high near 65. North wind 6 to 9 mph.

Saturday Night: Mostly cloudy, with a low around 44. Northeast wind 3 to 5 mph.

Sunday: A 20 percent chance of showers after 1pm. Partly sunny, with a high near 66. East wind 5 to 14 mph, with gusts as high as 22 mph.

Sunday Night: A 50 percent chance of showers. Mostly cloudy, with a low around 49. Breezy, with an east wind 14 to 18 mph, with gusts as high as 26 mph.

Monday: Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 60. Breezy, with an east wind 16 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 60%.

Monday Night: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 43. Breezy, with an east wind 14 to 16 mph becoming northwest after midnight. Winds could gust as high as 24 mph.

Tuesday: A 20 percent chance of showers. Partly sunny, with a high near 58. Northwest wind around 14 mph, with gusts as high as 22 mph.

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Weather Topic: What is Snow?

Home - Education - Precipitation - Snow

Snow Next Topic: Stratocumulus Clouds

Snow is precipitation taking the form of ice crystals. Each ice crystal, or snowflake, has unique characteristics, but all of them grow in a hexagonal structure. Snowfall can last for sustained periods of time and result in significant buildup of snow on the ground.

On the earth's surface, snow starts out light and powdery, but as it begins to melt it tends to become more granular, producing small bits of ice which have the consistency of sand. After several cycles of melting and freezing, snow can become very dense and ice-like, commonly known as snow pack.

Next Topic: Stratocumulus Clouds

Weather Topic: What are Stratus Clouds?

Home - Education - Cloud Types - Stratus Clouds

Next Topic: Wall Clouds

Stratus clouds are similar to altostratus clouds, but form at a lower altitude and are identified by their fog-like appearance, lacking the distinguishing features of most clouds.

Stratus clouds are wider than most clouds, and their base has a smooth, uniform look which is lighter in color than a nimbostratus cloud. The presence of a stratus cloud indicates the possibility of minor precipitation, such as drizzle, but heavier precipitation does not typically arrive in the form of a stratus cloud.

Next Topic: Wall Clouds