USDA Hardiness Zone 12b
Frost Dates for 96755 — Kapaau, Hawaii
NOAA 1991–2020 normals from Puukohola Heiau 98.1, HI (133 ft), 14 miles south.
Updated
No night at or below 32°F was recorded at Puukohola Heiau 98.1, HI in 1991–2020, not even 36°F, so Kapaau has no frost dates to plan around; the coolest month, February, averages a low of 68°F.
- Winters with a freeze
- 0%
- Winters with 36°F
- 0%
- Coldest month low
- 68°F
- Hardiness zone
- 12b
32°F or below, 1991–2020
frost possible on leaves
average, February
55 to 60°F (12.8 to 15.6°C) coldest night
- First snow
- Rare
- Last snow
- Rare
- Winters with snow
- 0%
- Snow per year
- 0"
median, 1991–2020
median, 1991–2020
0 of 20 observed
NOAA normal
Frost risk by date in Kapaau
Puukohola Heiau 98.1, HI, 14 miles south of Kapaau, 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 Puukohola Heiau 98.1, 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 96755 →Compare Kapaau with another place →
Weather by month in Kapaau
August is the warmest month at Puukohola Heiau 98.1, HI, averaging 89°F by day and 75°F at night; January is the coldest at 82°F and 68°F. Not one month recorded a 32°F night; the lowest monthly average low is 68°F.
Warmth for growing adds up to 10,527 growing degree days a year (base 50°F), the most of the 35 Hawaii stations. 47% of them (4,956) have built up by the end of June, and August adds the most, 990. Precipitation totals 8.9 inches a year, most in January (1.5") and least in July (0.2"); May to September bring 30% of it.
| Month | High °F | Low °F | Precip. in | 32°F night | Nights ≤ 32°F | GDD 50°F |
|---|---|---|---|---|---|---|
| Jan | 82 | 68 | 1.5 | 0% | 0 | 783 |
| Feb | 83 | 68 | 0.7 | 0% | 0 | 708 |
| Mar | 84 | 70 | 0.9 | 0% | 0 | 825 |
| Apr | 85 | 71 | 0.4 | 0% | 0 | 837 |
| May | 86 | 72 | 0.5 | 0% | 0 | 894 |
| Jun | 87 | 74 | 0.6 | 0% | 0 | 909 |
| Jul | 88 | 75 | 0.2 | 0% | 0 | 973 |
| Aug | 89 | 75 | 0.8 | 0% | 0 | 990 |
| Sep | 88 | 75 | 0.6 | 0% | 0 | 941 |
| Oct | 87 | 74 | 0.8 | 0% | 0 | 949 |
| Nov | 86 | 73 | 0.7 | 0% | 0 | 879 |
| Dec | 84 | 70 | 1.2 | 0% | 0 | 839 |
Monthly normals 1991–2020 at Puukohola Heiau 98.1, HI (133 ft), NOAA NCEI. "32°F night": chance of at least one in the month. GDD: growing degree days, base 50°F.
Compared with the next station
The nearest other station, Paauilo 221, HI, 30 miles southeast of Kapaau and 707 feet higher, has no 32°F night on record either, and a coolest-month low 12°F colder (56°F).
When it snows in Kapaau, Hawaii
Measurable snow is rare here: only 0 of 20 winters from 1991 to 2020 recorded 0.1 inch or more at Middle Pen 147.1, HI, 8.9 miles away, so there is no typical first-snow date to plan around.
Where these figures come from
ZIP 96755 is 14 miles from Puukohola Heiau 98.1, HI, which stands at 133 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 2 other ZIP codes share the station; its figures are presented in full for 96743 (Kamuela). The 2023 USDA Plant Hardiness Zone Map lists ZIP 96755 in zone 12b, the band where the coldest night of the year averaged 55 to 60°F (12.8 to 15.6°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.