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Frost dates for Poamoho Exp Fm 855.2, Hawaii

Frost is rare here. In a typical year this station records no freeze at all, so there is no last-frost date to plan around and the growing season runs all year.

Growing season
All year
Hardiness zones nearby
12a, 12b
Summer days
a usual high of about 29 °C85 °F
Lettuce and spinach run to seed
April to September, in hot, long days (how we know)

Summer and rain

A growing garden needs about 25 mm1 in of water a week, rain and watering together. Here is what a normal month brings.

Nearly every drop is yours
July: rain brings less than a quarter of the water a growing garden needs, about 25 mm1 in a week (how we know)

Month by month

January
high ~24 °C76 °F · low ~17 °C63 °F · rain ~123 mm4.8 in
February
high ~24 °C76 °F · low ~17 °C62 °F · rain ~72 mm2.8 in
March
high ~25 °C76 °F · low ~17 °C63 °F · rain ~113 mm4.5 in
April
high ~26 °C78 °F · low ~18 °C64 °F · rain ~61 mm2.4 in
May
high ~27 °C80 °F · low ~19 °C66 °F · rain ~46 mm1.8 in
June
high ~29 °C84 °F · low ~20 °C68 °F · rain ~32 mm1.2 in
July
high ~29 °C85 °F · low ~21 °C69 °F · rain ~28 mm1.1 in
August
high ~30 °C86 °F · low ~21 °C70 °F · rain ~38 mm1.5 in
September
high ~29 °C85 °F · low ~21 °C70 °F · rain ~33 mm1.3 in
October
high ~28 °C83 °F · low ~20 °C69 °F · rain ~66 mm2.6 in
November
high ~26 °C79 °F · low ~19 °C67 °F · rain ~86 mm3.4 in
December
high ~25 °C77 °F · low ~18 °C65 °F · rain ~142 mm5.6 in

Where these numbers come from

NOAA NCEI 1991–2020 Climate Normals, the Poamoho Exp Fm 855.2 station (listed by NOAA as Poamoho Exp Fm 855.2, USC00518055), at 21.54, -158.09. These are that station’s own records, unshifted. The further your garden is from it, the less exactly they describe your ground. The planner finds the nearest station to your garden and lowers its confidence with distance, so no number is presented as if it were measured in your garden.

Cold air also pools in low ground on the clear, still nights when frost happens, so a hollow can freeze while a slope a few hundred feet away does not. No table can know that about your garden. A few seasons of your own logged frosts can.

ZIP codes nearest this station

96712, 96759, 96791, 96857.

What can I plant here, and when? ›

Nearby stations

The nearest stations and how their last-frost dates compare. Together they show how frost varies across your area.

Other stations in Hawaii.

All locations · All plants · Folklore, checked