Your weekend forecast

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PHOENIX -- The weekend is here, and so is the threat for monsoon thunderstorms. 

As monsoon moisture moves up into Arizona from Mexico, storms are expected today in Southern Arizona, and scattered thunderstorms are possible in the higher elevations of Northern and Eastern Arizona, too. 

For the Valley, the forecast is tricky. Humidity levels are fairly high, but with afternoon highs topping out near only 103 degrees under mostly cloudy to partly sunny skies, it will be tough to get storms going.

Still, there's a 20-percent chance of rain and storms in the Valley both today and tomorrow. 

Drier air is forecast to move into the state Sunday and into early next week, decreasing storm chances. 

Weekend temperatures should top out near 105 Saturday and 107 Sunday.