Forecast Details for Calmar, IA

Recent Locations: Manson, WA Jud, ND Calmar, IA

Current Alerts for Calmar, IA: Wind Advisory

Today: A slight chance of showers between 3pm and 4pm, then a chance of showers and thunderstorms after 4pm. Increasing clouds, with a high near 66. Windy, with a south wind 21 to 29 mph, with gusts as high as 43 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Tonight: Showers likely and possibly a thunderstorm before 8pm, then a chance of showers between 8pm and 10pm. Cloudy during the early evening, then gradual clearing, with a low around 34. Northwest wind 7 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Thursday: A 20 percent chance of showers after 1pm. Increasing clouds, with a high near 53. West wind 6 to 9 mph.

Thursday Night: Showers likely, mainly before 1am. Mostly cloudy, with a low around 36. Calm wind becoming north around 6 mph in the evening. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

Friday: Mostly sunny, with a high near 54. North wind around 7 mph.

Friday Night: Mostly clear, with a low around 35. North wind around 5 mph becoming light and variable in the evening.

Saturday: A 30 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 58. Southeast wind 6 to 14 mph.

Saturday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 51. Breezy, with a southeast wind 13 to 16 mph, with gusts as high as 24 mph. Chance of precipitation is 60%.

Sunday: Showers likely, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 70. Breezy, with a south wind 16 to 21 mph, with gusts as high as 30 mph. Chance of precipitation is 70%.

Sunday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 60. Breezy, with a south wind 18 to 21 mph, with gusts as high as 30 mph. Chance of precipitation is 60%.

Monday: A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 74. Breezy, with a southwest wind 16 to 18 mph, with gusts as high as 26 mph.

Monday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 43. Breezy, with a southwest wind 14 to 16 mph becoming northwest after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 60%.

Tuesday: A 40 percent chance of showers. Partly sunny, with a high near 53. North wind around 15 mph.

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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