Forecast Details for Dennison, MN

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Current Alerts for Dennison, MN: Heat Advisory
Tonight: Mostly clear, with a low around 71. South southeast wind 5 to 10 mph.
Wednesday: Mostly sunny and hot, with a high near 93. Heat index values as high as 101. South wind 10 to 15 mph.
Wednesday Night: Showers and thunderstorms likely, mainly between 1am and 4am. Mostly cloudy, with a low around 70. South wind 5 to 10 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Thursday: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 86. South wind around 5 mph becoming west southwest in the afternoon.
Thursday Night: Partly cloudy, with a low around 65. West wind around 5 mph.
Friday: Sunny, with a high near 86. Calm wind becoming west northwest around 5 mph in the morning.
Friday Night: A 20 percent chance of showers and thunderstorms after 1am. Mostly clear, with a low around 64. West northwest wind around 5 mph becoming calm in the evening.
Saturday: A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 86. Calm wind becoming west around 5 mph in the afternoon.
Saturday Night: A 30 percent chance of showers and thunderstorms before 1am. Mostly clear, with a low around 63. Northwest wind around 5 mph becoming calm in the evening.
Sunday: Mostly sunny, with a high near 84. North wind around 5 mph.
Sunday Night: Mostly clear, with a low around 63. North northeast wind around 5 mph becoming calm in the evening.
Monday: Mostly sunny, with a high near 87. South southeast wind 5 to 10 mph.
Monday Night: A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 67. South wind around 5 mph.
Tuesday: A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 89. South wind 5 to 10 mph.

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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.

North American Water Vapor Map

Weather Topic: What is Evaporation?

Home - Education - Precipitation - Evaporation

Evaporation Next Topic: Fog

Evaporation is the process which returns water from the earth back to the atmosphere, and is another crucial process in the water cycle.

Evaporation is the transformation of liquid into gas, and it happens because molecules are excited by the application of energy and turn into vapor. In order for water to evaporate it has to be on the surface of a body of water.

Next Topic: Fog

Weather Topic: What are Fractus Clouds?

Home - Education - Cloud Types - Fractus Clouds

Fractus Clouds Next Topic: Freezing Rain

A fractus cloud (scud) is a fragmented, tattered cloud which has likely been sheared off of another cloud. They are accessory clouds, meaning they develop from parent clouds, and are named in a way which describes the original cloud which contained them.

Fractus clouds which have originated from cumulus clouds are referred to as cumulus fractus, while fractus clouds which have originated from stratus clouds are referred to as stratus fractus. Under certain conditions a fractus cloud might merge with another cloud, or develop into a cumulus cloud, but usually a fractus cloud seen by itself will dissipate rapidly.

They are often observed on the leading and trailing edges of storm clouds, and are a display of wind activity.

Next Topic: Freezing Rain