Forecast Details for Irwin, IA

Recent Locations: Peacham, VT Meriden, KS Irwin, IA

Tonight: A 20 percent chance of showers and thunderstorms before 9pm. Cloudy during the early evening, then gradual clearing, with a low around 41. Light and variable wind becoming north northwest 9 to 14 mph in the evening. Winds could gust as high as 23 mph.

Friday: Sunny, with a high near 64. North wind 8 to 11 mph, with gusts as high as 20 mph.

Friday Night: Mostly clear, with a low around 41. North northeast wind 5 to 7 mph becoming light and variable.

Saturday: A 30 percent chance of showers, mainly after 1pm. Partly sunny, with a high near 64. East wind 6 to 13 mph, with gusts as high as 18 mph. New precipitation amounts of less than a tenth of an inch possible.

Saturday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 48. East wind 6 to 9 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Sunday: A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 68. Breezy, with an east southeast wind 9 to 18 mph, with gusts as high as 25 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Sunday Night: Showers and possibly a thunderstorm. Low around 53. Breezy, with a southeast wind 15 to 18 mph, with gusts as high as 26 mph. Chance of precipitation is 90%.

Monday: Showers and possibly a thunderstorm before 1pm, then a chance of showers. Mostly cloudy, with a high near 65. Breezy, with a southeast wind 11 to 16 mph becoming west 18 to 23 mph in the afternoon. Winds could gust as high as 31 mph.

Monday Night: A slight chance of showers before 1am. Mostly cloudy, with a low around 39. Breezy, with a west northwest wind 19 to 24 mph decreasing to 11 to 16 mph after midnight. Winds could gust as high as 32 mph.

Tuesday: Mostly sunny, with a high near 60. West northwest wind around 10 mph, with gusts as high as 16 mph.

Tuesday Night: Partly cloudy, with a low around 38. Northwest wind around 6 mph becoming calm in the evening.

Wednesday: A slight chance of showers. Mostly sunny, with a high near 61. Light northwest wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 17 mph.

Wednesday Night: A chance of showers. Partly cloudy, with a low around 38. North northwest wind 5 to 9 mph becoming light north.

Thursday: A chance of showers. Partly sunny, with a high near 59. North wind 6 to 15 mph, with gusts as high as 21 mph.

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North America Water Vapor (Moisture)

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Weather Topic: What are Cirrus Clouds?

Home - Education - Cloud Types - Cirrus Clouds

Next Topic: Condensation

Cirrus clouds are high-level clouds that occur above 20,000 feet and are composed mainly of ice crystals. They are thin and wispy in appearance.

What do they indicate?
They are often the first sign of an approaching storm.

Next Topic: Condensation

Weather Topic: What are Contrails?

Home - Education - Cloud Types - Contrails

Next Topic: Cumulonimbus Clouds

A contrail is an artificial cloud, created by the passing of an aircraft.

Contrails form because water vapor in the exhaust of aircraft engines is suspended in the air under certain temperatures and humidity conditions. These contrails are called exhaust contrails.

Another type of contrail can form due to a temporary reduction in air pressure moving over the plane's surface, causing condensation. These are called aerodynamic contrails.

When you can see your breath on a cold day, it is also because of condensation. The reason contrails last longer than the condensation from your breath is because the water in contrails freezes into ice particles.

Next Topic: Cumulonimbus Clouds