Millions of Americans are facing a dangerous freeze warning on Tuesday as temperatures plummet across multiple states.

Expected temperatures in parts of Wisconsin, Minnesota, North Dakota, South Dakota, Michigan, Colorado, Wyoming, and Idaho are predicted to drop between 22°F and 30°F.

The National Weather Service (NWS) has placed these areas under a warning from tonight through Wednesday morning, with the alert concluding between 8 and 10 am local time, varying by state and county.

In north-central and northeast Wisconsin, temperatures could decline to the mid-20s, while inland Upper Michigan might see lows of about 28°F.

The Central Yampa River Basin in Colorado might face temperatures around 27°F, and some valleys in Wyoming are predicted to experience lows of 22°F.

Farmers in North Dakota should be wary of frost and freezing conditions that could harm delicate vegetation, a concern shared by those in Minnesota and Wisconsin, impacting gardens and crops.

Residents are being urged to protect tender plants, wrap outdoor pipes and take precautions against frost damage. 

Authorities warned that sensitive outdoor vegetation may be killed if left uncovered and unprotected. 

Millions of Americans are facing a dangerous freeze warning on Tuesday as temperatures drop below freezing across multiple states (stock image) 

The National Weather Service issued the warning for parts of Wisconsin, Minnesota, North Dakota, South Dakota, Michigan, Colorado, Wyoming and Idaho

This early October chill is part of a broader pattern of record-low temperatures affecting the northern US, with meteorologists cautioning that these cool conditions may persist throughout the week.

In Wisconsin, north-central and northeast counties, including Vilas, Oneida, Forest, Florence, Marinette, Lincoln, Langlade, Menominee and Oconto, are under a freeze warning from 10pm Tuesday through 9am Wednesday. 

Central counties, including Marathon, Shawano, Wood, Portage, Clark, Taylor and Jackson, are expected to see temperatures drop below freezing between 3am and 9am Wednesday.

Minnesota is also bracing for frigid conditions, especially in northern counties such as Crow Wing, Aitkin, Pine, Cass, South Itasca, Carlton and St Louis, which will see temperatures fall below freezing from 10pm Tuesday until 10am Wednesday. 

Central counties, including Benton, Morrison, Todd, Chisago, Isanti, Kanabec and Mille Lacs, face a freeze warning from midnight tonight until 8am Wednesday.

Parts of North Dakota will experience sub-freezing temperatures from midnight tonight until 9am Wednesday. 

The Upper Peninsula of Michigan, including Baraga, Delta, Dickinson, Iron, Marquette, Menominee, Gogebic, Ontonagon and southern Houghton counties, will face freezing conditions from 11pm tonight until 9am Wednesday.

Residents in Wyoming, Colorado and Idaho are also under alerts. Central and northern Wyoming will experience freezing temperatures from 1am to 9am Tuesday. 

Locals can expect the warning to last until Wednesday for most regions

The Central Yampa River Basin in Colorado remains below freezing until 10am Tuesday, and eastern Idaho, including the Magic Valley and Snake River Plains, is expected to experience sub-freezing temperatures until 10am Tuesday.

By Friday, the weather is set to change as a low-pressure system moving in from the northwest meets the remnants of Hurricane Priscilla. 

This combination will bring more clouds and a chance of rainfall, with daytime temperatures reaching the low 70s.

Residents should be ready for stormy conditions returning over the weekend, which could disrupt outdoor activities and travel plans.