MINNEAPOLIS (AP) — Health officials are urging Minnesotans to take precautions in dealing with high temperatures and humidity.

The National Weather Service says the humidity made temperatures feel like 100 to 108 degrees Monday across much of Minnesota. The weather service extended an excessive heat warning for Anoka, Washington, Dakota, Ramsey, Hennepin, Scott and Carver counties until 7 a.m. Tuesday.

The heat index rose to 108 in Litchfield and 105 at Madison, in western Minnesota. Temperatures soared into the 90s, with St. Cloud hitting 94, Minneapolis and Redwood Falls 92 and International Falls — the nation's icebox — reporting 90.

Health officials urge residents to check on neighbors who may be vulnerable to the heat.