ZIP code · Heisson · Washington · United States

ZIP code 98622 — Heisson

ZIP code 98622 serves Heisson, Washington.

Postal code: 98622
Single source Value from one source, not cross-checked.
City: Heisson
County: Clark
State: Washington
Country: United States
Coordinates: 45.8248, -122.4912 — precision precise (locality)
View on OpenStreetMap
USDA hardiness zone: 8b (15 to 20 °F)
Planting / growing zone from the 2023 USDA Plant Hardiness Zone Map: average annual extreme minimum temperature, 1991–2020.
Time zone: America/Los_Angeles (UTC−8 / UTC−7 DST)
Area codes: 360, 564 (from the nearest rate centre)
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 98622 with another ZIP · ZIPs within 25 miles · distance from 98622

Climate — monthly normals

Warmest month Aug (avg high 80°F), coldest Feb (avg low 32°F).

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg high °F	46	50	55	60	67	71	79	80	75	63	52	45
Avg low °F	32	32	35	38	43	47	51	50	46	40	35	32
Precip in	7.2	5.3	5.6	4.5	3.4	2.3	0.6	0.8	2.2	4.8	7.6	8.0

NOAA 1991–2020 climate normals from the nearest station: BATTLE GROUND (4.1 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 · usda-phzm. Data generated on 2026-08-21. Methodology · Report an error on this page