Forecast Details for Grand Lake, CO

Recent Locations: Rock City Falls, NY North Royalton, OH Grand Lake, CO

Today: A 30 percent chance of showers and thunderstorms, mainly after 2pm. Areas of smoke. Increasing clouds, with a high near 70. Calm wind becoming west 5 to 9 mph in the afternoon. Winds could gust as high as 15 mph.

Tonight: A chance of showers and thunderstorms. Areas of smoke before midnight. Mostly cloudy, with a low around 37. North northwest wind 5 to 7 mph becoming calm in the evening. Chance of precipitation is 30%.

Sunday: A slight chance of showers, then showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 68. Calm wind becoming west 5 to 9 mph in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 60%.

Sunday Night: A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and midnight. Mostly cloudy, with a low around 37. West wind 3 to 8 mph. Winds could gust as high as 18 mph. Chance of precipitation is 20%.

Monday: Mostly sunny, with a high near 70. Light west wind increasing to 6 to 11 mph in the morning. Winds could gust as high as 22 mph.

Monday Night: Partly cloudy, with a low around 37.

Tuesday: A 30 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 72.

Tuesday Night: Mostly cloudy, with a low around 38.

Wednesday: A chance of showers and thunderstorms after noon. Partly sunny, with a high near 71.

Wednesday Night: Mostly cloudy, with a low around 38.

Thursday: A chance of showers and thunderstorms. Partly sunny, with a high near 70.

Thursday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 35.

Friday: Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 64.

Want more detail? Get the Complete 7 Day and Night Detailed Forecast!

Current U.S. National Radar--Current

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National Weather Forecast--Current

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National Weather Forecast for Tomorrow

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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 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

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