Forecast Details for Grimes, IA

Recent Locations: Leroy, AL Shorewood, IL Grimes, IA

Today: A 50 percent chance of showers, mainly after 3pm. Cloudy, with a high near 50. Breezy, with an east wind 14 to 18 mph, with gusts as high as 26 mph. New precipitation amounts of less than a tenth of an inch possible.

Tonight: Showers before 10pm, then showers and possibly a thunderstorm between 10pm and 4am, then showers after 4am. Low around 41. Breezy, with an east wind 15 to 17 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.

Thursday: Showers and possibly a thunderstorm before 4pm, then showers likely. High near 63. Windy, with a southeast wind 14 to 21 mph becoming west southwest in the afternoon. Winds could gust as high as 29 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

Thursday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 38. Breezy, with a west wind 12 to 17 mph becoming north northwest 6 to 11 mph after midnight. Winds could gust as high as 24 mph.

Friday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1pm. High near 65. East wind 9 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

Friday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 35. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Saturday: A 20 percent chance of showers before 1pm. Mostly cloudy, with a high near 46. Windy.

Saturday Night: Partly cloudy, with a low around 30. Windy.

Sunday: Sunny, with a high near 53.

Sunday Night: Mostly clear, with a low around 34.

Monday: Mostly sunny, with a high near 61.

Monday Night: Partly cloudy, with a low around 32.

Tuesday: Mostly sunny, with a high near 54.

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Weather Topic: What are Altocumulus Clouds?

Home - Education - Cloud Types - Altocumulus Clouds

Next Topic: Altostratus Clouds

Similar to cirrocumulus clouds, altocumulus clouds are characterized by cloud patches. They are distinguished by larger cloudlets than cirrocumulus clouds but are still smaller than stratocumulus clouds.

Altocumulus clouds most commonly form in middle altitudes (between 2 and 5 km) and may resemble, at times, the shape of a flying saucer. These uncommon formations, called altocumulus lenticularis, are created by uplift in the atmosphere and are most often seen in close proximity to mountains.

Next Topic: Altostratus Clouds

Weather Topic: What are Cirrocumulus Clouds?

Home - Education - Cloud Types - Cirrocumulus Clouds

Next Topic: Cirrostratus Clouds

Cirrocumulus clouds form at high altitudes (usually around 5 km) and have distinguishing characteristics displayed in a fine layer of small cloud patches. These small cloud patches are sometimes referred to as "cloudlets" in relation to the whole cloud formation.

Cirrocumulus clouds are formed from ice crystals and water droplets. Often, the water droplets in the cloud freeze into ice crystals and the cloud becomes a cirrostratus cloud. Because of this common occurrence, cirrocumulus cloud formations generally pass rapidly.

Next Topic: Cirrostratus Clouds