Fog will develop overnight through mid morning Saturday and could be locally dense. Otherwise it will become sunny Saturday and warm temperatures continue into the weekend. There will be another chance for rain and perhaps some thunderstorms on Sunday. Read More >
Grand Rapids, MI
Weather Forecast Office
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| Winter Wind Rose December - February |
Spring Wind Rose March - May |
Summer Wind Rose June - August |
Fall Wind Rose September - November |
The histogram shows the frequency that visibility, ceiling and ceiling/visibility reaches various flight categories.
| MVFR | GTE 1,000 to LTE 3,000 and/or GTE 3 to LTE 5SM |
| IFR | GTE 500 to LT 1,000 and/or GTE 1 to LT 3SM |
| LIFR | GTE 200 to LT 500 and/or GTE 1/2 to LT 1SM |
| VLIFR | LT 200 and/or LT 1/2SM |
A wind rose is a diagram that depicts the distribution of wind direction and speed at a location over a period of time. The length of each spoke on a wind rose indicates how often the wind comes from this direction. Longer spokes mean the wind comes from this direction more often. To give you a rough idea of the percentage there are dotted rings labeled in percent. Additionally, the colors on each spoke displays how often the wind speed from this direction falls within a given range.
US Dept of Commerce
National Oceanic and Atmospheric Administration
National Weather Service
Grand Rapids, MI
4899 Tim Dougherty Drive SE
Grand Rapids, MI 49512-4034
616-949-0643
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