Forecast Details for Grimes, IA

Recent Locations: Three Rivers, CA Black, AL Grimes, IA

This Afternoon: A slight chance of showers before 1pm, then a chance of showers after 2pm. Cloudy, with a high near 50. Breezy, with an east wind around 18 mph, with gusts as high as 26 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

Tonight: Showers, with thunderstorms also possible after 10pm. Low around 41. Breezy, with an east wind around 17 mph, with gusts as high as 26 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.

Thursday: Showers and thunderstorms before 4pm, then showers likely. High near 63. Windy, with an east southeast wind 15 to 21 mph becoming west in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

Thursday Night: A 30 percent chance of showers before 7pm. Mostly cloudy, with a low around 38. Breezy, with a west wind 12 to 17 mph becoming north northwest 5 to 10 mph after midnight. Winds could gust as high as 25 mph. New precipitation amounts of less than a tenth of an inch possible.

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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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 Cumulus Clouds?

Home - Education - Cloud Types - Cumulus Clouds

Next Topic: Drizzle

Cumulus clouds are fluffy and textured with rounded tops, and may have flat bottoms. The border of a cumulus cloud is clearly defined, and can have the appearance of cotton or cauliflower.

Cumulus clouds form at low altitudes (rarely above 2 km) but can grow very tall, becoming cumulus congestus and possibly the even taller cumulonimbus clouds. When cumulus clouds become taller, they have a greater chance of producing precipitation.

Next Topic: Drizzle

Weather Topic: What is Evaporation?

Home - Education - Precipitation - Evaporation

Next Topic: Fog

Evaporation is the process which returns water from the earth back to the atmosphere, and is another crucial process in the water cycle.

Evaporation is the transformation of liquid into gas, and it happens because molecules are excited by the application of energy and turn into vapor. In order for water to evaporate it has to be on the surface of a body of water.

Next Topic: Fog