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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Current Conditions

Big Island Summit

Zone Forecast

  • Tonight Partly cloudy. Lows around 43 at 9000 feet to around 34 at the summits. Light winds.
  • Thursday Sunny with isolated rain showers. Highs around 57 at 9000 feet to around 51 at the summits. Light winds becoming southeast up to 10 mph in the late morning and afternoon. Chance of rain 20 percent.
  • Thursday Night Partly cloudy in the evening then becoming clear. Lows around 43 at 9000 feet to around 34 at the summits. Light winds.
  • Friday Sunny. Isolated rain showers in the afternoon. Highs 49 to 60. Light winds becoming east around 15 mph in the late morning and afternoon. Chance of rain 20 percent.
  • Friday Night Mostly clear. Lows 32 to 46. Northeast winds 10 to 15 mph.
  • Saturday Sunny. Highs 49 to 60. Northeast winds 10 to 15 mph.
  • Saturday Night Mostly clear. Lows 32 to 46. East winds around 10 mph.
  • Sunday Sunny in the morning...then partly sunny with isolated rain showers in the afternoon. Highs 49 to 60. Northeast winds around 10 mph. Chance of rain 20 percent.
  • Sunday Night Partly cloudy. Lows 32 to 46. Light winds.
  • Monday Sunny in the morning...then partly sunny with isolated rain showers in the afternoon. Highs 49 to 60. Light winds becoming northeast around 10 mph in the late morning and afternoon. Chance of rain 20 percent.
  • Monday Night Mostly clear. Lows 32 to 46. Northeast winds around 10 mph.
  • Tuesday Sunny. Isolated rain showers in the afternoon. Highs 49 to 60. Northeast winds around 10 mph. Chance of rain 20 percent.
  • Tuesday Night Mostly clear. Lows 32 to 46. Northeast winds around 10 mph.
  • Wednesday Sunny. Isolated rain showers in the afternoon. Highs 49 to 60. Northeast winds around 10 mph. Chance of rain 20 percent.