Arroyo Grande, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Arroyo Grande, a city in San Luis Obispo County, California.
This Afternoon
79°F
Sunny
Sunny, with a high near 79. Northwest wind around 15 mph, with gusts as high as 25 mph.
7-day forecast for Arroyo Grande
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 79°F | Sunny | 15 mph NW | 0% |
| Tonight | 53°F | Patchy Fog | 5 to 15 mph NW | 0% |
| Saturday | 79°F | Patchy Fog then Mostly Sunny | 5 to 15 mph NW | 1% |
| Saturday Night | 54°F | Patchy Fog | 5 to 10 mph N | 0% |
| Sunday | 76°F | Patchy Fog then Partly Sunny | 5 to 10 mph WNW | 2% |
| Sunday Night | 54°F | Patchy Fog | 5 to 10 mph NW | 2% |
| Monday | 73°F | Patchy Fog then Mostly Sunny | 5 to 15 mph WNW | 1% |
| Monday Night | 55°F | Partly Cloudy | 0 to 10 mph NW | 1% |
| Tuesday | 72°F | Mostly Sunny | 0 to 10 mph WNW | 0% |
| Tuesday Night | 57°F | Mostly Clear | 0 to 10 mph NNW | 0% |
| Wednesday | 81°F | Sunny | 0 to 5 mph NNW | 0% |
| Wednesday Night | 60°F | Mostly Clear | 0 to 5 mph NNE | 0% |
| Thursday | 80°F | Mostly Sunny | 0 to 5 mph S | 0% |
| Thursday Night | 60°F | Partly Cloudy | 0 to 5 mph NW | 1% |
Forecast source: National Weather Service (api.weather.gov) for Arroyo Grande (35.124, -120.585). Updated through the day.
Growing snapshot for Arroyo Grande
Last spring frost
Feb 1
First fall frost
Jan 4
Growing season
362 days
Hardiness zone
10a
More local growing data for Arroyo Grande: nearby ZIP 93433 weather · frost dates · planting calendar · California frost dates
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Climate data from the nearest NOAA station, Pismo Beach, Ca (4.5 mi from Arroyo Grande). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.