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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National City CA

7 Day Forecast

For More Weather Information:

San Diego, CA Local Forecast Office

Overnight

Slight Chance Thunderstorms Chance for Measurable Precipitation 20%

Slight Chc
Thunderstorms

Low: 68 °F

Thursday

Slight Chance Thunderstorms Chance for Measurable Precipitation 20%

Slight Chc
Thunderstorms

High: 79 °F

Thursday
Night

Patchy Fog

Patchy
Fog

Low: 69 °F

Friday

Patchy Fog

Patchy
Fog

High: 81 °F

Friday
Night

Patchy Fog

Patchy
Fog

Low: 70 °F

Saturday

Patchy Fog

Patchy
Fog

High: 80 °F

Saturday
Night

Patchy Fog

Patchy
Fog

Low: 68 °F

Sunday

Patchy Fog

Patchy
Fog

High: 79 °F

Sunday
Night

Patchy Fog

Patchy
Fog

Low: 68 °F

Detailed Forecast

  • Overnight A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 68. Calm wind.
  • Thursday A 20 percent chance of showers and thunderstorms before 11am. Mostly sunny, with a high near 79. Light west wind increasing to 5 to 10 mph in the afternoon.
  • Thursday Night Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 69. West wind 5 to 10 mph becoming north after midnight.
  • Friday Patchy fog before 11am. Otherwise, sunny, with a high near 81. Light and variable wind becoming west 5 to 10 mph in the afternoon.
  • Friday Night Patchy fog after 11pm. Otherwise, increasing clouds, with a low around 70. West wind around 5 mph becoming calm in the evening.
  • Saturday Patchy fog before 11am. Otherwise, cloudy through mid morning, then gradual clearing, with a high near 80.
  • Saturday Night Patchy fog after 11pm. Otherwise, increasing clouds, with a low around 68.
  • Sunday Patchy fog before 11am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 79.
  • Sunday Night Patchy fog after 11pm. Otherwise, increasing clouds, with a low around 68.
  • Monday Patchy fog before 11am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 79.
  • Monday Night Patchy fog after 11pm. Otherwise, increasing clouds, with a low around 69.
  • Tuesday Patchy fog before 11am. Otherwise, mostly cloudy through mid morning, then gradual clearing, with a high near 80.
  • Tuesday Night Patchy fog after 11pm. Otherwise, increasing clouds, with a low around 70.
  • Wednesday Patchy fog before 11am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 81.