Forecast Details for Rochester, MA

Recent Locations: Palmyra, WI Wendell, MN Rochester, MA

Overnight: Rain likely, mainly after 3am. Patchy fog. Otherwise, cloudy, with a low around 37. Northeast wind around 8 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

Thursday: Rain, mainly before noon. Patchy fog before 4pm, then patchy fog after 5pm. High near 42. Northeast wind 10 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

Thursday Night: Patchy fog before 7pm, then patchy fog after 8pm. Otherwise, cloudy, with a low around 35. Northeast wind 5 to 7 mph becoming calm after midnight.

Friday: Patchy fog before 1pm. Otherwise, mostly cloudy, with a high near 56. Light and variable wind becoming southwest 6 to 11 mph in the afternoon. Winds could gust as high as 22 mph.

Friday Night: Patchy fog before 9pm. Otherwise, mostly cloudy, with a low around 44. Southwest wind 7 to 10 mph, with gusts as high as 23 mph.

Saturday: Partly sunny, with a high near 58. Light and variable wind becoming northeast 5 to 10 mph in the morning. Winds could gust as high as 20 mph.

Saturday Night: Mostly cloudy, with a low around 38. East wind 5 to 7 mph.

Sunday: Showers, mainly after 1pm. High near 57. Southwest wind 11 to 16 mph, with gusts as high as 31 mph. Chance of precipitation is 80%.

Sunday Night: Showers, mainly before 8pm. Low around 37. West wind 6 to 8 mph, with gusts as high as 20 mph. Chance of precipitation is 80%.

Monday: Mostly sunny, with a high near 53. West wind 7 to 10 mph.

Monday Night: Mostly clear, with a low around 32. West wind 3 to 6 mph.

Tuesday: Mostly sunny, with a high near 50. West wind 3 to 8 mph.

Tuesday Night: Partly cloudy, with a low around 29. North wind 3 to 7 mph.

Wednesday: Sunny, with a high near 44. North wind 6 to 8 mph.

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Current U.S. National Radar--Current

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National Weather Forecast--Current

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North America Water Vapor (Moisture)

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Weather Topic: What is Condensation?

Home - Education - Precipitation - Condensation

Next Topic: Contrails

Condensation is the process which creates clouds, and therefore it is a crucial process in the water cycle. Condensation is the change of matter from a state of gas into a state of liquid, and it happens because water molecules release heat into the atmosphere and become organized into a more closely packed structure, what we might see as water droplets.

Water is always present in the air around us as a vapor, but it's too small for us to see. When water undergoes the process of condensation it becomes organized into visible water droplets. You've probably seen condensation happen before on the surface of a cold drink!

Next Topic: Contrails

Weather Topic: What are Cumulonimbus Clouds?

Home - Education - Cloud Types - Cumulonimbus Clouds

Cumulonimbus Clouds Next Topic: Cumulus Clouds

The final form taken by a growing cumulus cloud is the cumulonimbus cloud, which is very tall and dense. The tower of a cumulonimbus cloud can soar 23 km into the atmosphere, although most commonly they stop growing at an altitude of 6 km.

Even small cumulonimbus clouds appear very large in comparison to other cloud types. They can signal the approach of stormy weather, such as thunderstorms or blizzards.

Next Topic: Cumulus Clouds