National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Tropical Storm Arthur and Heavy Rainfall in the South; Severe Weather in the Midwest

An outbreak of severe thunderstorms is expected across portions of Illinois and Indiana tonight. Intense tornadoes, swaths of damaging gusts, and hail in excess of 2 inches in diameter possible. Tropical Storm Arthur will continue to produce strong winds across coastal Upper Texas and Louisiana tonight, as well as potentially life-threatening flooding across southern Louisiana into Mississippi. Read More >

Hazardous Weather Conditions

Current conditions at

San Luis Reservoir (SLRCA)

Lat: 37.06°NLon: 121.07°WElev: 266.0ft.

NA

76°F

24°C

Humidity 50%
Wind Speed NA NA MPH
Barometer NA
Dewpoint 56°F (13°C)
Visibility NA
Heat Index78°F (26°C)
Last update 17 Jun 05:59 PM PDT
Extended Forecast for

20 Miles WNW Los Banos CA

Lake Wind Advisory June 17, 06:48pm until June 17, 11:00pm
Click here for hazard details and duration
...
  •  
    Lake Wind Advisory June 17, 06:48pm until June 17, 11:00pm

    NOW until 11:00pm Wed

    Lake Wind Advisory

  • Tonight

    Low: 56 °F

    Mostly Clear
    and Breezy

  • Thursday

    Thursday: Sunny, with a high near 81. Breezy, with a west southwest wind 10 to 20 mph, with gusts as high as 30 mph.

    High: 81 °F

    Sunny then
    Sunny and
    Breezy

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 55. Breezy, with a west southwest wind 15 to 20 mph, with gusts as high as 35 mph.

    Low: 55 °F

    Mostly Clear
    and Breezy

  • Juneteenth

    Juneteenth: Sunny, with a high near 77. West southwest wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 77 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 53. Breezy, with a west wind 10 to 20 mph, with gusts as high as 30 mph.

    Low: 53 °F

    Mostly Clear
    and Breezy
    then Mostly
    Clear

  • Saturday

    Saturday: Sunny, with a high near 80. West southwest wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 80 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 53. West southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 53 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 83. West southwest wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 83 °F

    Sunny

Detailed Forecast

Tonight
Mostly clear, with a low around 56. Breezy, with a west southwest wind 15 to 20 mph, with gusts as high as 30 mph.
Thursday
Sunny, with a high near 81. Breezy, with a west southwest wind 10 to 20 mph, with gusts as high as 30 mph.
Thursday Night
Mostly clear, with a low around 55. Breezy, with a west southwest wind 15 to 20 mph, with gusts as high as 35 mph.
Juneteenth
Sunny, with a high near 77. West southwest wind 10 to 15 mph, with gusts as high as 20 mph.
Friday Night
Mostly clear, with a low around 53. Breezy, with a west wind 10 to 20 mph, with gusts as high as 30 mph.
Saturday
Sunny, with a high near 80. West southwest wind 5 to 10 mph, with gusts as high as 15 mph.
Saturday Night
Mostly clear, with a low around 53. West southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Sunday
Sunny, with a high near 83. West southwest wind 5 to 10 mph, with gusts as high as 15 mph.
Sunday Night
Mostly clear, with a low around 55. West southwest wind around 15 mph, with gusts as high as 25 mph.
Monday
Sunny, with a high near 87. West southwest wind 5 to 15 mph.
Monday Night
Mostly clear, with a low around 57. West southwest wind 10 to 15 mph, with gusts as high as 20 mph.
Tuesday
Sunny, with a high near 91. West southwest wind 5 to 10 mph.
Tuesday Night
Clear, with a low around 59. West southwest wind 10 to 15 mph, with gusts as high as 20 mph.
Wednesday
Sunny, with a high near 93. West southwest wind 5 to 10 mph becoming north in the morning.
Basemap Options
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
20 Miles WNW Los Banos CA
 37.15°N 121.17°W (Elev. 1070 ft)
Last Update:
5:56 pm PDT Jun 17, 2026
Forecast Valid:
6pm PDT Jun 17, 2026-6pm PDT Jun 24, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation