Forecast Details for Derry, NH

Recent Locations: Commack, NY Kaylor, SD Derry, NH

Overnight: Partly cloudy, with a low around 21. Calm wind.

Thursday: Sunny, with a high near 39. Calm wind.

Thursday Night: Increasing clouds, with a low around 20. Calm wind.

Friday: Snow, mainly after 11am. High near 37. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 80%. New snow accumulation of around an inch possible.

Friday Night: Snow. Low around 21. Northeast wind around 5 mph. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.

Saturday: A 40 percent chance of snow. Mostly cloudy, with a high near 31.

Saturday Night: Partly cloudy, with a low around 14.

Sunday: Mostly sunny, with a high near 35.

Sunday Night: A 30 percent chance of snow after 9pm. Mostly cloudy, with a low around 20.

Monday: A 40 percent chance of snow. Mostly cloudy, with a high near 32.

Monday Night: Mostly cloudy, with a low around 17.

Tuesday: Sunny, with a high near 33.

Tuesday Night: Partly cloudy, with a low around 10.

Wednesday: Partly sunny, with a high near 33.

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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

Tomorrow National Weather Forecast and Tomorrow National Weather Map are show below.

North America Water Vapor (Moisture)

This map shows recent moisture content over North America. Bright and colored areas show high moisture (ie, clouds); brown indicates very little moisture present; black indicates no moisture.

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

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