Aspen leaves show the peak of autumn color in a grove along the Catalina Highway northeast of Tucson.

In true fall fashion, Tucsonans can expect cooler temperatures tonight — right in time for Halloween. 

Some spots east of Tucson might even see freezing temperatures, the National Weather Service reports. But that shouldn't be the case in Tucson.

High temperatures today are expected to reach the low 70s, but the weather should warm up a bit by the weekend.

High: 73

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Low: 45