Allergy sufferers beware — strong gusty winds will blow into the Tucson valley by late morning Wednesday before an autumn storm hits on Thursday, forecasters say.

The storm, which is coming from the north, is expected to bring gusts of up to 35 mph and possibly 50 mph by Wednesday afternoon and early evening, said Carl Cerniglia, a meteorologist with the National Weather Service in Tucson.

Motorists are expected to face blowing dust from noon to 8 p.m. along Interstate 10 north of Tucson in the Casa Grande area.

Interstate 10 east of Bisbee where there are open fields is also expected to have low visibility, said Cerniglia.

Travelers are advised to pull off to the side of the road as far as possible and wait until the dust clears. He reminded motorists to turn off their vehicle lights.

The high Wednesday is expected to reach 87 degrees and the low 61 degrees.

There is a forecast for rain during the predawn hours Thursday through early afternoon, and temperatures will drop, said Cerniglia.

The high is expected to be 74 degrees and the low 59 degrees on Thursday.

Mount Lemmon may receive snow showers at 8,500 feet and above, Cerniglia said.

On Friday, the Tucson high is expected to reach 75 degrees and the low 49 degrees, said Cerniglia.