Skip to content
VSWeather

Arroyo Grande, CA weather and climate

San Luis Obispo County, CA · population 18,412 · about 203 ft elevation

Everything below is a 30 year average for 1991-2020, computed from daily climate history at Arroyo Grande's own coordinates.

The year at a glance

Sunny days
295
clear or partly cloudy, per year
Precipitation
17 in
per year
Wet days
39
rain or snow per year
Snowfall
0 in
per year
Hot days
8
above 90 °F
Freezing nights
3
at or below 32 °F
Humidity
74%
average relative
Average temperature
60 °F
year round

Monthly temperatures

Average daily high and low for each month, in °F.

Daily highDaily low
506070JanMarMayJulSepNovDaily high, Jan: 65 °FDaily high, Feb: 65 °FDaily high, Mar: 67 °FDaily high, Apr: 69 °FDaily high, May: 72 °FDaily high, Jun: 73 °FDaily high, Jul: 74 °FDaily high, Aug: 75 °FDaily high, Sep: 75 °FDaily high, Oct: 74 °FDaily high, Nov: 70 °FDaily high, Dec: 65 °FDaily low, Jan: 43 °FDaily low, Feb: 44 °FDaily low, Mar: 46 °FDaily low, Apr: 47 °FDaily low, May: 49 °FDaily low, Jun: 51 °FDaily low, Jul: 54 °FDaily low, Aug: 55 °FDaily low, Sep: 54 °FDaily low, Oct: 52 °FDaily low, Nov: 46 °FDaily low, Dec: 43 °F
View monthly temperatures as a table
Monthly temperatures (°F)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Daily high656567697273747575747065
Daily low434446474951545554524643

Monthly precipitation

Total rain plus melted snow for each month, in inches.

0.02.04.0JanMarMayJulSepNovArroyo Grande, Jan: 3.8 inArroyo Grande, Feb: 3.6 inArroyo Grande, Mar: 2.8 inArroyo Grande, Apr: 1.0 inArroyo Grande, May: 0.4 inArroyo Grande, Jun: 0.1 inArroyo Grande, Jul: 0.0 inArroyo Grande, Aug: 0.0 inArroyo Grande, Sep: 0.0 inArroyo Grande, Oct: 0.8 inArroyo Grande, Nov: 1.4 inArroyo Grande, Dec: 2.8 in
View monthly precipitation as a table
Monthly precipitation (inches)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Arroyo Grande3.83.62.81.00.40.10.00.00.00.81.42.8

Monthly sunny days

Days each month with clear or partly cloudy skies.

0102030JanMarMayJulSepNovArroyo Grande, Jan: 19 daysArroyo Grande, Feb: 18 daysArroyo Grande, Mar: 21 daysArroyo Grande, Apr: 24 daysArroyo Grande, May: 26 daysArroyo Grande, Jun: 28 daysArroyo Grande, Jul: 29 daysArroyo Grande, Aug: 30 daysArroyo Grande, Sep: 29 daysArroyo Grande, Oct: 27 daysArroyo Grande, Nov: 24 daysArroyo Grande, Dec: 21 days
View monthly sunny days as a table
Monthly sunny days (days)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Arroyo Grande191821242628293029272421

Compare Arroyo Grande with another city

Nearby cities and popular picks. Any two cities can be compared from the home page.

See weather for every covered California city

About this data

Figures are 30 year averages for 1991-2020. Wet days count days with measurable precipitation, calibrated against the wet day counts in NOAA's published climate normals. Sunny days count clear plus partly cloudy days, defined as average cloud cover of 63 percent or less and calibrated against NOAA's published sky cover tables. Snowfall figures are model estimates anchored to NOAA station measurements near each city.

Weather data by Open-Meteo.com (CC BY 4.0). Contains modified Copernicus Climate Change Service information (ERA5, ERA5-Land).