Forecast Details for Harlan, IA

Recent Locations: Vanceboro, NC Charleston, WV Harlan, IA

Today: Rain likely, mainly after 3pm. Cloudy, with a high near 48. East wind 14 to 16 mph, with gusts as high as 24 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

Tonight: Rain, with thunderstorms also possible after 1am. Low around 39. East wind around 15 mph, with gusts as high as 23 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

Thursday: Rain and thunderstorms, mainly before 2pm. High near 54. East wind 10 to 16 mph becoming west northwest in the afternoon. Winds could gust as high as 23 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

Thursday Night: Partly cloudy, with a low around 34. West northwest wind 5 to 11 mph becoming east northeast after midnight. Winds could gust as high as 18 mph.

Friday: Rain and possibly a thunderstorm. High near 56. East wind 10 to 15 mph becoming north in the afternoon. Winds could gust as high as 23 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Friday Night: A 40 percent chance of rain before 1am. Mostly cloudy, with a low around 29. Northwest wind 11 to 14 mph, with gusts as high as 21 mph. New precipitation amounts of less than a tenth of an inch possible.

Saturday: Mostly cloudy, with a high near 44. Breezy, with a west northwest wind 15 to 23 mph, with gusts as high as 31 mph.

Saturday Night: Partly cloudy, with a low around 26. Blustery, with a northwest wind 14 to 22 mph, with gusts as high as 29 mph.

Sunday: Sunny, with a high near 53. Northwest wind 10 to 13 mph.

Sunday Night: Mostly clear, with a low around 33. Northwest wind around 7 mph becoming south southeast after midnight.

Monday: Partly sunny, with a high near 61. South wind 6 to 13 mph becoming northwest in the afternoon. Winds could gust as high as 18 mph.

Monday Night: A slight chance of rain. Partly cloudy, with a low around 29. North northeast wind 8 to 11 mph, with gusts as high as 17 mph.

Tuesday: Mostly sunny, with a high near 54. North northeast wind 8 to 13 mph becoming east southeast in the afternoon. Winds could gust as high as 20 mph.

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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