Below-average temperatures associated with a cold front will persist across the country with at least four states warned of frost and potentially freezing weather on Friday night.

Why It Matters

The end of summer has brought contrasting weather across the country, with the Pacific Northwest under extreme heat warnings amid above-average temperatures and much of the rest of the central and northern U.S. experiencing below-average temperatures . In some cases, temperatures have dipped low enough for frost to form, prompting National Weather Service (NWS) meteorologists to issue warnings for people to protect sensitive vegetation and plumbing.

What to Know

On Friday afternoon, NWS meteorologists issued a frost advisory for Minnesota, North Dakota, South Dakota and Wyoming. A more se

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