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

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Fullerton Municipal CA

7 Day Forecast

For More Weather Information:

San Diego, CA Local Forecast Office

Overnight

Mostly Cloudy

Mostly
Cloudy

Low: 67 °F

Thursday

Decreasing Clouds

Decreasing
Clouds

High: 84 °F

Thursday
Night

Patchy Fog

Patchy
Fog

Low: 68 °F

Friday

Patchy Fog

Patchy
Fog

High: 86 °F

Friday
Night

Patchy Fog

Patchy
Fog

Low: 68 °F

Saturday

Patchy Fog

Patchy
Fog

High: 85 °F

Saturday
Night

Mostly Clear

Mostly
Clear

Low: 67 °F

Sunday

Sunny

Sunny

High: 85 °F

Sunday
Night

Mostly Clear

Mostly
Clear

Low: 67 °F

Detailed Forecast

  • Overnight Mostly cloudy, with a low around 67. South wind around 5 mph.
  • Thursday Mostly cloudy, then gradually becoming sunny, with a high near 84. Light southwest wind increasing to 5 to 10 mph in the afternoon.
  • Thursday Night Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 68. Southwest wind 5 to 10 mph becoming light in the evening.
  • Friday Patchy fog before 11am. Otherwise, sunny, with a high near 86. Light west wind becoming southwest 5 to 10 mph in the afternoon.
  • Friday Night Patchy fog after 11pm. Otherwise, increasing clouds, with a low around 68. Southwest wind 5 to 10 mph becoming light in the evening.
  • Saturday Patchy fog before 11am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 85.
  • Saturday Night Mostly clear, with a low around 67.
  • Sunday Sunny, with a high near 85.
  • Sunday Night Mostly clear, with a low around 67.
  • Monday Sunny, with a high near 86.
  • Monday Night Mostly clear, with a low around 68.
  • Tuesday Sunny, with a high near 87.
  • Tuesday Night Clear, with a low around 69.
  • Wednesday Sunny, with a high near 88.