National Weather Service Forecast for: Arroyo Grande CA
Issued by: National Weather Service Los Angeles/Oxnard, CA
Updated: 11:27 am PDT Jul 12, 2026
 
This
Afternoon
This Afternoon: Partly sunny, with a high near 78. West wind around 10 mph.
Partly Sunny
Tonight

Tonight: Mostly cloudy, with a low around 63. West southwest wind around 5 mph becoming calm  in the evening.
Mostly Cloudy
Monday

Monday: Mostly cloudy, then gradually becoming sunny, with a high near 81. Calm wind becoming west southwest around 5 mph in the morning.
Decreasing
Clouds
Monday
Night
Monday Night: Partly cloudy, with a low around 63. West southwest wind around 5 mph becoming calm  in the evening.
Partly Cloudy
Tuesday

Tuesday: Mostly sunny, with a high near 84. Light west wind increasing to 5 to 10 mph in the morning.
Mostly Sunny
Tuesday
Night
Tuesday Night: Mostly clear, with a low around 63.
Mostly Clear
Wednesday

Wednesday: Sunny, with a high near 90.
Sunny
Wednesday
Night
Wednesday Night: Mostly clear, with a low around 61.
Mostly Clear
Thursday

Thursday: Mostly sunny, with a high near 79.
Mostly Sunny
Hi 78 °F Lo 63 °F Hi 81 °F Lo 63 °F Hi 84 °F Lo 63 °F Hi 90 °F Lo 61 °F Hi 79 °F

Extreme Heat Watch
 

This Afternoon
 
Partly sunny, with a high near 78. West wind around 10 mph.
Tonight
 
Mostly cloudy, with a low around 63. West southwest wind around 5 mph becoming calm in the evening.
Monday
 
Mostly cloudy, then gradually becoming sunny, with a high near 81. Calm wind becoming west southwest around 5 mph in the morning.
Monday Night
 
Partly cloudy, with a low around 63. West southwest wind around 5 mph becoming calm in the evening.
Tuesday
 
Mostly sunny, with a high near 84. Light west wind increasing to 5 to 10 mph in the morning.
Tuesday Night
 
Mostly clear, with a low around 63.
Wednesday
 
Sunny, with a high near 90.
Wednesday Night
 
Mostly clear, with a low around 61.
Thursday
 
Mostly sunny, with a high near 79.
Thursday Night
 
Partly cloudy, with a low around 58.
Friday
 
Mostly sunny, with a high near 73.
Friday Night
 
Mostly cloudy, with a low around 60.
Saturday
 
Partly sunny, with a high near 75.

 

Forecast from NOAA-NWS for Arroyo Grande CA.