Arroyo Grande, CA Weather & Climate Normals
Arroyo Grande's real weather, in one number
Arroyo Grande, CA scores 82/100 on this site's reading of NOAA's own 30-year normals: very mild year-round. Many months fall in a comfortable temperature range with limited snow or seasonal extremes. 9 of the year's 12 months average between 55 and 75°F, the range this site counts as mild.
Arroyo Grande's hottest and coldest months
Arroyo Grande's hottest month is Aug, averaging 63°F; its coldest is Dec, averaging 54°F, an 8.7°F swing across the year, one of the smaller gaps in this dataset.
Rain and snow in Arroyo Grande
Arroyo Grande averages 17.87in of precipitation a year across roughly 57 days with measurable rain or snow, and 0in of snow a year.
Where Arroyo Grande ranks
Arroyo Grande ranks 102 of 4876 US cities in this dataset for comfort score, and 102 of 429 within CA. About 18,249 people live there.
If you need tomorrow's forecast, not the 30-year average
Everything above is a 30-year average from PISMO BEACH, CA US, 6.1 miles from Arroyo Grande, not a prediction for any specific day.
More on how this is worked out
What a 30-year climate normal actually is · Why this uses the nearest NOAA station