Forecast Details for Grand Rapids, MI

Recent Locations: Grand Rapids, MI

Tonight: Partly cloudy, with a low around 56. East wind 3 to 6 mph.

Sunday: Mostly sunny, with a high near 82. East wind 3 to 6 mph.

Sunday Night: Partly cloudy, with a low around 61. East wind 3 to 5 mph.

Monday: Partly sunny, with a high near 84. Calm wind becoming south southwest around 5 mph in the afternoon.

Monday Night: Mostly cloudy, with a low around 66. West southwest wind around 5 mph becoming calm in the evening.

Tuesday: A 30 percent chance of showers after 2pm. Mostly sunny, with a high near 88.

Tuesday Night: A chance of showers, with thunderstorms also possible after 8pm. Mostly cloudy, with a low around 67. Chance of precipitation is 50%.

Wednesday: Showers likely, then showers and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 81.

Wednesday Night: Showers and possibly a thunderstorm before 2am, then a chance of showers between 2am and 3am, then a chance of showers and thunderstorms after 3am. Mostly cloudy, with a low around 63.

Juneteenth: A chance of showers before 8am. Partly sunny, with a high near 78.

Thursday Night: Mostly clear, with a low around 59.

Friday: Mostly sunny, with a high near 82.

Friday Night: A chance of showers. Mostly cloudy, with a low around 65.

Saturday: A chance of showers. Partly sunny, with a high near 85.

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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

Tomorrow National Weather Forecast and Tomorrow National Weather Map are show below.

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 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