Forecast Details for Royalston, MA

Recent Locations: Fountain City, WI Ralston, IA Royalston, MA

Tonight: A chance of showers, mainly between 9pm and 2am. Patchy fog after 3am. Otherwise, cloudy, with a low around 35. Southeast wind 8 to 10 mph, with gusts as high as 25 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

Sunday: Showers and thunderstorms before 4pm, then a chance of showers. Patchy fog before 10am. High near 47. South wind 5 to 7 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Sunday Night: Cloudy, then gradually becoming partly cloudy, with a low around 31. West wind around 11 mph, with gusts as high as 23 mph.

Monday: Partly sunny, with a high near 45. West wind 10 to 13 mph, with gusts as high as 24 mph.

Monday Night: A chance of snow, mainly after 4am. Partly cloudy, with a low around 26. West wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%. Little or no snow accumulation expected.

Tuesday: A chance of snow showers before 10am, then a chance of rain and snow showers between 10am and 3pm, then a slight chance of snow showers after 3pm. Partly sunny, with a high near 43. Northwest wind 5 to 11 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.

Tuesday Night: Mostly clear, with a low around 20. Northwest wind 3 to 7 mph.

Wednesday: Sunny, with a high near 47. Calm wind becoming west around 5 mph in the afternoon.

Wednesday Night: Mostly clear, with a low around 26. South wind around 5 mph.

Thursday: Mostly sunny, with a high near 55. South wind 7 to 11 mph, with gusts as high as 22 mph.

Thursday Night: Partly cloudy, with a low around 36. South wind 6 to 9 mph, with gusts as high as 20 mph.

Friday: Mostly sunny, with a high near 61. West wind 5 to 8 mph.

Friday Night: Partly cloudy, with a low around 37. South wind around 6 mph.

Saturday: Mostly sunny, with a high near 62. Southwest wind 5 to 8 mph.

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North America Water Vapor (Moisture)

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Weather Topic: What are Mammatus Clouds?

Home - Education - Cloud Types - Mammatus Clouds

Mammatus Clouds Next Topic: Nimbostratus Clouds

A mammatus cloud is a cloud with a unique feature which resembles a web of pouches hanging along the base of the cloud.

In the United States, mammatus clouds tend to form in the warmer months, commonly in the Midwest and eastern regions.

While they usually form at the bottom of a cumulonimbis cloud, they can also form under altostratus, altocumulus, stratocumulus, and cirrus clouds. Mammatus clouds warn that severe weather is close.

Next Topic: Nimbostratus Clouds

Weather Topic: What is Precipitation?

Home - Education - Precipitation - Precipitation

Next Topic: Rain

Precipitation can refer to many different forms of water that may fall from clouds. Precipitation occurs after a cloud has become saturated to the point where its water particles are more dense than the air below the cloud.

In most cases, precipitation will reach the ground, but it is not uncommon for precipitation to evaporate before it reaches the earth's surface. When precipitation evaporates before it contacts the ground it is called Virga. Graupel, hail, sleet, rain, drizzle, and snow are forms of precipitation, but fog and mist are not considered precipitation because the water vapor which constitutes them isn't dense enough to fall to the ground.

Next Topic: Rain