Arroyo Grande, California Weather
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Weather Forecast for Arroyo Grande, California : San Luis Obispo County
Issued: 1:32 pm PDT Sep 15, 2025 Latitude: 35.1185869 Longitude: -120.5907252 View on Google Maps

MouseOver for Detail Forecast
Tonight Tuesday Wednesday Thursday Friday Saturday Sunday Monday
Fog on Tonight Morning Fog on Tuesday Mostly Sunny on Wednesday 50% chance of thunderstorms on Thursday 20% chance of on Friday Mostly Sunny on Saturday Patchy Fog on Sunday Patchy Fog on Monday
Low: 55°F High: 76°F High: 79°F High: 73°F High: 73°F High: 71°F High: 73°F High: 75°F
Low: 57°F Low: 57°F Low: 58°F Low: 59°F Low: 59°F Low: 60°F  
Fog Morning Fog Mostly Sunny Thunderstorms Partly Sunny Mostly Sunny Patchy Fog Patchy Fog
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Current Conditions at
SAN LUIS OBISPO - (KSBP)
63°
Clear
as of 7:56 PM PDST
Rel. Humidity: 77%
Dew Point: 55°F
Visibility: 10 Miles
Pressure: 29.86 in.
Flight Rule: VFR
Wind Data
5 MPH
300° Northwest
Cloud Level(s): Clear
Current Conditions at
SANTA MARIA - (KSMX)
59°
Cloudy
Mist
as of 7:59 PM PDST
Rel. Humidity: 93%
Dew Point: 57°F
Visibility: 1 3/4 Miles
Pressure: 29.88 in.
Flight Rule: LIFR
Wind Data
Calm
Cloud Level(s): Solid Overcast at 200ft
Fog on Tonight Tonight... Patchy dense fog after 11pm. Otherwise, mostly clear during the early evening, then becoming cloudy, with a low around 55. Calm wind.
Morning Fog on Tuesday Tuesday... Patchy dense fog before 11am. Otherwise, cloudy through mid morning, then gradual clearing, with a high near 76. Light and variable wind becoming west 5 to 10 mph in the afternoon.
Mostly Clear on Tuesday Night Tuesday Night... Mostly clear, with a low around 57. West northwest wind around 5 mph becoming calm.
Mostly Sunny on Wednesday Wednesday... Mostly sunny, with a high near 79. Light and variable wind becoming west northwest 5 to 10 mph in the afternoon.
30% chance of thunderstorms Wednesday Night Wednesday Night... A slight chance of showers, then a chance of showers and thunderstorms after 11pm. Mostly cloudy, with a low around 57. West wind 5 to 10 mph becoming northeast after midnight. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
50% chance of thunderstorms Thursday Thursday... A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 73.
40% chance of thunderstorms Thursday Night Thursday Night... A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 58.
20% chance of Friday Friday... A chance of showers. Partly sunny, with a high near 73.
Cloudy on Friday Night Friday Night... Partly cloudy, with a low around 59.
Mostly Sunny on Saturday Saturday... Mostly sunny, with a high near 71.
Patchy Fog on Saturday Night Saturday Night... Patchy fog. Otherwise, mostly cloudy, with a low around 59.
Patchy Fog on Sunday Sunday... Patchy fog. Otherwise, mostly sunny, with a high near 73.
Patchy Fog on Sunday Night Sunday Night... Patchy fog. Otherwise, mostly cloudy, with a low around 60.
Patchy Fog on Monday Monday... Patchy fog. Otherwise, mostly sunny, with a high near 75.
Sun Almanac for Arroyo Grande, California
Sunrise: 06:46 AM
Sunset: 7:09 PM
Civil Sunrise:06:20 AM
Civil Sunset: 7:34 PM
Nautical Sunrise: 05:51 AM
Nautical Sunset: 8:04 PM
Astro Sunrise: 05:20 AM
Astro Sunset: 8:34 PM
Any use of the information on this page is at your own risk. This information should not be relied upon in life-threatening situations, potential financial loss situations or in lieu of any officially disseminated information. Visit the National Weather Service for official information.