Forecast Details for Rochester, MA

Recent Locations: Rochester, MA  
Tonight: A slight chance of showers before midnight. Patchy fog. Otherwise, mostly cloudy, with a low around 51. Southwest wind around 6 mph. Chance of precipitation is 20%.
Monday: Partly sunny, with a high near 66. North wind 9 to 13 mph, with gusts as high as 23 mph.
Monday Night: Patchy fog after midnight. Otherwise, mostly cloudy, with a low around 47. Southwest wind around 6 mph becoming calm after midnight.
Tuesday: Mostly cloudy, with a high near 57. East wind around 8 mph.
Tuesday Night: A chance of showers, mainly between 9pm and 3am. Mostly cloudy, with a low around 45. Southeast wind around 7 mph. Chance of precipitation is 40%.
Wednesday: Showers likely, mainly before 10am. Mostly cloudy, with a high near 55. Northeast wind around 10 mph. Chance of precipitation is 60%.
Wednesday Night: Mostly cloudy, with a low around 43. North wind 6 to 8 mph.
Thursday: Mostly sunny, with a high near 64. Northeast wind 5 to 10 mph becoming south in the afternoon. Winds could gust as high as 20 mph.
Thursday Night: Mostly cloudy, with a low around 46. Southwest wind around 11 mph.
Friday: Partly sunny, with a high near 65. South wind 10 to 14 mph.
Friday Night: Mostly cloudy, with a low around 48. South wind 13 to 15 mph.
Saturday: A chance of showers. Mostly cloudy, with a high near 62. Southeast wind 11 to 13 mph. Chance of precipitation is 30%.
Saturday Night: A chance of showers. Mostly cloudy, with a low around 47. Southeast wind 10 to 13 mph. Chance of precipitation is 30%.
Sunday: A chance of showers. Mostly cloudy, with a high near 62. Northeast wind 9 to 13 mph becoming south in the afternoon. Chance of precipitation is 30%.

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Current U.S. National Radar--Current

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Current U.S. National Radar

National Weather Forecast--Current

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Today's National Weather Map

National Weather Forecast for Tomorrow

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North America Water Vapor (Moisture)

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North American Water Vapor Map

Weather Topic: What are Wall Clouds?

Home - Education - Cloud Types - Wall Clouds

Wall Clouds Next Topic: Altocumulus Clouds

A wall cloud forms underneath the base of a cumulonimbus cloud, and can be a hotbed for deadly tornadoes.

Wall clouds are formed by air flowing into the cumulonimbus clouds, which can result in the wall cloud descending from the base of the cumulonimbus cloud, or rising fractus clouds which join to the base of the storm cloud as the wall cloud takes shape.

Wall clouds can be very large, and in the Northern Hemisphere they generally form at the southern edge of cumulonimbus clouds.

Next Topic: Altocumulus Clouds

Weather Topic: What are Altostratus Clouds?

Home - Education - Cloud Types - Altostratus Clouds

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