Forecast Details for Rock Falls, IA

Recent Locations: North Royalton, OH Greenville, NC Rock Falls, IA

Overnight: Mostly cloudy, with a low around 33. North northeast wind 10 to 14 mph, with gusts as high as 21 mph.

Wednesday: A 30 percent chance of showers, mainly after 4pm. Increasing clouds, with a high near 48. Breezy, with an east wind 10 to 17 mph, with gusts as high as 23 mph. New precipitation amounts of less than a tenth of an inch possible.

Wednesday Night: Rain showers before 1am, then rain showers, possibly mixed with sleet between 1am and 2am, then rain showers after 2am. Low around 34. Breezy, with an east wind 18 to 20 mph, with gusts as high as 28 mph. Chance of precipitation is 100%. Little or no sleet accumulation expected.

Thursday: Showers before 1pm, then showers and possibly a thunderstorm between 1pm and 4pm, then showers likely after 4pm. High near 54. Breezy, with an east wind 14 to 20 mph becoming west northwest in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.

Thursday Night: Showers likely before 7pm. Mostly cloudy, with a low around 30. Blustery, with a west northwest wind 13 to 18 mph decreasing to 7 to 12 mph after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

Friday: A chance of rain and thunderstorms before 10am, then a chance of rain between 10am and 1pm, then rain and possibly a thunderstorm after 1pm. High near 48. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Friday Night: Showers and possibly a thunderstorm before 1am, then a chance of showers. Low around 31. Blustery. Chance of precipitation is 80%.

Saturday: A chance of rain and snow showers before 1pm, then a chance of rain showers. Mostly cloudy, with a high near 41. Windy. Chance of precipitation is 40%.

Saturday Night: Mostly cloudy, with a low around 26. Windy.

Sunday: Sunny, with a high near 47. Breezy.

Sunday Night: Mostly clear, with a low around 29.

Monday: Mostly sunny, with a high near 57. Breezy.

Monday Night: Partly cloudy, with a low around 33.

Tuesday: Mostly sunny, with a high near 55. Breezy.

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Current U.S. National Radar--Current

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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 Altostratus Clouds?

Home - Education - Cloud Types - Altostratus Clouds

Next Topic: Cirrocumulus Clouds

Altostratus clouds form at mid to high-level altitudes (between 2 and 7 km) and are created by a warm, stable air mass which causes water vapor to condense as it rise through the atmosphere. Usually altostratus clouds are featureless sheets characterized by a uniform color.

In some cases, wind punching through the cloud formation may give it a waved appearance, called altostratus undulatus. Altostratus clouds are commonly seen with other cloud formations accompanying them.

Next Topic: Cirrocumulus Clouds

Weather Topic: What are Cirrostratus Clouds?

Home - Education - Cloud Types - Cirrostratus Clouds

Next Topic: Cirrus Clouds

Cirrostratus clouds are high, thin clouds that form above 20,000 feet and are made mostly of ice crystals. They sometimes look like giant feathers, horse tails, or curls of hair in the sky. These clouds are pushed by the jet stream and can move at high speeds reaching 100 mph.

What do they indicate?
They indicate that a precipitation is likely within 24 hours.

Next Topic: Cirrus Clouds