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Climate in Grafton, Wisconsin

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ClimateGrafton, WIUnited States
Rainfall (in.)31.436.5
Snowfall (in.)45.625
Precipitation Days108100
Sunny Days191205
Avg. July High8286.5
Avg. Jan. Low10.920.5
Comfort Index (higher=better)5044
UV Index3.44.3
Elevation ft.7651,443



Grafton, WI, gets 31 inches of rain per year. The US average is 37. Snowfall is 46 inches. The average US city gets 25 inches of snow per year. The number of days with any measurable precipitation is 108.

On average, there are 191 sunny days per year in Grafton, WI. The July high is around 82 degrees. The January low is 11. Our comfort index, which is based on humidity during the hot months, is a 50 out of 100, where higher is more comfortable. The US average on the comfort index is 44.


Grafton Climate SperlingViews

Summers in Grafton: Located just North of Milwaukee. Lots do to do in the... (read more)Great Place to Live: With recent national rankings of Ozaukee County as being the second best place to raise a family in the America and being the healthiest county in Wisconsin, you soon... (read more)Slow-paced living within 20 minutes of Downtown!!!: The location of Grafton is ideal. With a 20 minute drive, you're in downtown Milwaukee which offers plenty of waterfront activities, incredible restaurants, and many... (read more)Have an opinion about Grafton? Leave a commentTo See All SperlingViews for Grafton Click Here