Phoenix weather: Cooler weather arrives

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PHOENIX -- A storm system passing to our north is ushering in a cool change for Arizona's weather.

In the Valley, triple-digit heat came to an end -- at least for now -- on Monday. 

Today, look for a high of only 98 degrees under mostly sunny skies. 

Afternoon highs will fall off a few more degrees over the next couple of afternoons under mostly sunny skies. Overnight lows will also come down. Under mostly clear skies, look for in-town lows in the low 70s, with outlying areas seeing upper 60s. 

The weekend brings low 90s for highs and low 70s for lows, but also a slight chance of showers.

Hurricane Miriam is moving toward the Baja Peninsula in the Pacific, and may push a surge of moisture toward Arizona this weekend.  There's a good chance that moisture could miss Arizona and push east, so for now, we are forecasting just a slight chance of showers Saturday, Sunday and Monday. 

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