Maybe it's a good time for a run or a bike ride. That's what meteorologist Matt Salerno of the National Weather Service in Phoenix plans to do when he's not working.

“Just go out and enjoy the nice change,” he said.

A cold front is approaching and about half the valley could see measurable rain Friday morning: moderate showers, maybe a rumble or two of thunder. The afternoon is expected to be dry and gusty, with winds up to 30 mph and highs in the low 80s.

Then the reward for enduring a Phoenix summer: a Saturday morning in the mid to upper 50s and a high around 78.