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T​rick-or-treaters this Halloween will need a warm costume in parts of the eastern and central U.S., but parts of the West should escape the cold temperatures.

T​he good news is that there isn't precipitation in the forecast for most areas.

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H​ere's where the cold air will be: A strong Canadian high-pressure system will center itself over the central U.S. by Halloween. Unfortunately, this means temperatures much colder than average are expected, especially for the Plains.

T​emperatures in the 20s and 30s are expected from parts of the Rockies into the Central Plains and Great Lakes. Slightly milder conditions are expected in the mid-Atlantic and Tennessee Valley into Texas, where temperatures should be in the 40s and 50s. But that's still cooler than average.

T​emperatures in California, Arizona and Florida will be pleasant.

(15-min details: For even more granular weather data tracking in your area, view your 15-minute details forecast in our Premium Pro experience.)

Aside from a few showers, dry conditions are expected: The same high-pressure system keeping much of the country cold will also keep it relatively dry.

A few showers are possible for coastal areas of the Southeast into the mid-Atlantic. A mix of rain and snow or some plain old flurries are possible near the Great Lakes.

The rest of the Midwest, South and West should be precipitation-free.

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