National Weather Service United States Department of Commerce

Oppressive heat and humidity building into the central and southeast U.S.

A heat wave is building into parts of the central and southeast U.S. this week. The combination of heat and humidity will lead to dangerous heat indices, especially in parts of the central Mississippi River Valley where an Excessive Heat Warning is in effect. Heat Advisories are in effect elsewhere across the region. Relief is not expected for several days.
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Hazardous Weather Conditions

Current Conditions

Polk County

Zone Forecast

  • Today Partly cloudy. Scattered showers and thunderstorms in the afternoon. Highs in the mid 90s. Northeast winds around 5 mph. Chance of rain 30 percent. Heat index readings 100 to 105.
  • Tonight Partly cloudy with isolated showers and thunderstorms in the evening...then mostly clear after midnight. Lows in the mid 70s. East winds around 5 mph becoming southeast after midnight. Chance of rain 20 percent.
  • Friday Mostly sunny in the morning...then partly sunny with scattered showers and thunderstorms in the afternoon. Highs in the mid 90s. South winds around 5 mph becoming north in the afternoon. Chance of rain 30 percent. Heat index readings 100 to 105.
  • Friday Night Partly cloudy. Scattered showers and thunderstorms in the evening. Lows in the upper 70s. East winds 5 to 10 mph becoming southwest around 5 mph after midnight. Chance of rain 30 percent.
  • Saturday Partly sunny. Scattered showers and thunderstorms in the afternoon. Highs in the mid 90s. West winds around 5 mph becoming northwest 5 to 10 mph in the afternoon. Chance of rain 30 percent. Heat index readings 101 to 106.
  • Saturday Night Partly cloudy with isolated showers and thunderstorms. Lows in the mid 70s. Chance of rain 20 percent.
  • Sunday And Sunday Night Partly cloudy with scattered showers and thunderstorms. Highs in the mid 90s. Lows in the mid 70s. Chance of rain 50 percent.
  • Monday Through Wednesday Partly cloudy with scattered showers and thunderstorms. Highs around 90. Lows in the mid 70s. Chance of rain 50 percent.