USDA Hardiness Zone 12a
Frost Dates for 96741 — Kalaheo, Hawaii
NOAA 1991–2020 normals from Mahaulepu 941.1, HI (80 ft), 8 miles southeast.
Updated
No night at or below 32°F was recorded at Mahaulepu 941.1, HI in 1991–2020, not even 36°F, so Kalaheo has no frost dates to plan around.
- Winters with a freeze
- 0%
- Winters with 36°F
- 0%
- Coldest month low
- —
- Hardiness zone
- 12a
32°F or below, 1991–2020
frost possible on leaves
50 to 55°F (10.0 to 12.8°C) coldest night
- First snow
- Rare
- Last snow
- Rare
- Winters with snow
- 0%
- Snow per year
- —
median, 1991–2020
median, 1991–2020
0 of 20 observed
NOAA normal
Frost risk by date in Kalaheo
Mahaulepu 941.1, HI, 8 miles southeast of Kalaheo, did not record a night at or below 32°F in 1991–2020. 36 of the 37 other Hawaii stations behind this site's ZIP pages recorded no 32°F night either.
Freeze probabilities 1991–2020 at Mahaulepu 941.1, HI, from NOAA NCEI U.S. Climate Normals. Where a temperature is reached in fewer than 99.5% of years, the dates describe only the years that reach it. Not a forecast.
Frost risk on any date in 96741 →Compare Kalaheo with another place →
Compared with the next station
The nearest other station, Lihue WSO Airport 1020.1, HI, 9 miles east of Kalaheo, has no 32°F night on record either.
When it snows in Kalaheo, Hawaii
Measurable snow is rare here: only 0 of 20 winters from 1991 to 2020 recorded 0.1 inch or more at Mahaulepu 941.1, HI, 7.8 miles away, so there is no typical first-snow date to plan around.
Where these figures come from
ZIP 96741 is 8 miles from Mahaulepu 941.1, HI, which stands at 80 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 1 other ZIP code shares the station. The 2023 USDA Plant Hardiness Zone Map lists ZIP 96741 in zone 12a, the band where the coldest night of the year averaged 50 to 55°F (10.0 to 12.8°C) over 1991–2020; a zone describes winter lows, not frost dates.
Hardiness zone and temperature range: USDA Plant Hardiness Zone Map 2023 (USDA-ARS, Oregon State University), ZIP-code listing, unchanged. °C converted from °F by this site.
Thirty-year averages, not a forecast: check the forecast before planting out. How stations are matched and which pages are offered to search engines: methodology.