Forecast Details for Boston, MA

Recent Locations: Spring Valley, IL Fresno, CA Boston, MA

Today: Increasing clouds, with a temperature rising to near 56 by 11am, then falling to around 45 during the remainder of the day. North wind 8 to 14 mph becoming east in the afternoon.

Tonight: A chance of showers, mainly after 1am. Patchy fog after 3am. Otherwise, cloudy, with a low around 40. East wind 6 to 9 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

Sunday: Showers. Patchy fog before 11am. High near 63. Southwest wind 6 to 11 mph, with gusts as high as 23 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

Sunday Night: Showers, mainly before 8pm. Low around 39. West wind around 8 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

Monday: Mostly sunny, with a high near 54. West wind 9 to 11 mph, with gusts as high as 21 mph.

Monday Night: Partly cloudy, with a low around 36. West wind 3 to 7 mph.

Tuesday: A chance of snow showers before 9am, then a chance of rain and snow showers between 9am and 10am, then a chance of rain showers after 10am. Partly sunny, with a high near 49. Light west wind increasing to 5 to 9 mph in the morning. Chance of precipitation is 50%.

Tuesday Night: Partly cloudy, with a low around 28. Northwest wind around 8 mph.

Wednesday: Sunny, with a high near 48. North wind 5 to 7 mph becoming southeast in the afternoon.

Wednesday Night: Mostly clear, with a low around 34. South wind around 8 mph.

Thursday: Sunny, with a high near 59. South wind 7 to 13 mph.

Thursday Night: Partly cloudy, with a low around 42. South wind 9 to 11 mph.

Friday: Mostly sunny, with a high near 63. West wind around 9 mph becoming southeast in the afternoon.

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North America Water Vapor (Moisture)

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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