Forecast Details for Sumter, SC

Recent Locations: Hartford, AR Sumter, SC

Overnight: Mostly cloudy, with a low around 64. Southwest wind around 9 mph, with gusts as high as 28 mph.

Friday: Showers likely before noon, then a chance of showers and thunderstorms between noon and 3pm. Cloudy, then gradually becoming mostly sunny, with a high near 81. West wind 10 to 14 mph, with gusts as high as 33 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Friday Night: A slight chance of showers, then a chance of showers and thunderstorms after 2am. Increasing clouds, with a low around 57. Light west wind. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Saturday: A chance of showers and thunderstorms before 7am, then showers and possibly a thunderstorm between 7am and 1pm, then rain and possibly a thunderstorm after 1pm. High near 69. Calm wind becoming south around 6 mph in the morning. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

Saturday Night: A chance of rain and thunderstorms before 1am, then rain likely and possibly a thunderstorm between 1am and 4am, then rain likely after 4am. Cloudy, with a low around 48. Calm wind. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

Sunday: A chance of rain before 1pm. Mostly sunny, with a high near 59. Chance of precipitation is 40%. New precipitation amounts between a tenth and quarter of an inch possible.

Sunday Night: Mostly clear, with a low around 30.

Monday: Sunny, with a high near 48.

Monday Night: Mostly clear, with a low around 26.

Tuesday: Sunny, with a high near 51.

Tuesday Night: Mostly clear, with a low around 31.

Wednesday: Partly sunny, with a high near 60.

Wednesday Night: Mostly cloudy, with a low around 46.

Thursday: A chance of rain. Mostly cloudy, with a high near 66. Chance of precipitation is 40%.

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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