High of 85 today, back to the high 70s for weekend, start of spring

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PHOENIX -- With a high of 85 degrees, today will be the warmest day of the year -- so far.

We'll stay in the 80s tomorrow, but should then drop back to the high 70s through the weekend and into next week.

Mid to upper 70s is what's usual for this time of year.

A ridge of high pressure is what's keeping up above average for the moment.

Saturday is the official first day of spring.