ZIP code · Arroyo Grande · California · United States

ZIP code 93421 — Arroyo Grande

ZIP code 93421 serves Arroyo Grande, California.

Postal code: 93421
Single source Value from one source, not cross-checked.
City: Arroyo Grande
County: San Luis Obispo
State: California
Country: United States
Coordinates: 35.1186, -120.5907 — precision precise (locality)
View on OpenStreetMap
Time zone: America/Los_Angeles (UTC−8 / UTC−7 DST)
Area codes: 805, 820
Telephone area codes serving this ZIP (NANPA central-office assignments). A ZIP and an area code are different boundaries; at a border both codes may apply.

Tools: compare 93421 with another ZIP · ZIPs within 25 miles · distance from 93421

Climate — monthly normals

Warmest month Oct (avg high 73°F), coldest Dec (avg low 44°F).

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg high °F	65	65	68	70	72	71	70	71	72	73	69	65
Avg low °F	44	44	46	48	50	51	54	55	54	53	46	44
Precip in	3.5	4.0	3.0	1.0	0.5	0.1	0.0	0.0	0.1	0.8	1.8	3.1

NOAA 1991–2020 climate normals from the nearest station: PISMO BEACH (6.0 mi) · NOAA NCEI

About this page

US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.

GeoNames · NOAA NCEI. Data generated on 2026-08-21. Methodology · Report an error on this page