USDA Hardiness Zone 12b
Frost Dates for 96740 — Kailua Kona, Hawaii
NOAA 1991–2020 normals from Kailua Kona Ke-Ahole Airport, HI (43 ft), 6 miles northwest.
Updated
No night at or below 32°F was recorded at Kailua Kona Ke-Ahole Airport, HI in 1991–2020, not even 36°F, so Kailua Kona 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 Kailua Kona
Kailua Kona Ke-Ahole Airport, HI, 6 miles northwest of Kailua Kona, 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 Kailua Kona Ke-Ahole Airport, 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 96740 →Compare Kailua Kona with another place →
Weather by month in Kailua Kona
August is the warmest month at Kailua Kona Ke-Ahole Airport, HI, averaging 87°F by day and 76°F at night; February 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 10,313 growing degree days a year (base 50°F), more than at 97% of the 35 Hawaii stations. 47% of them (4,858) have built up by the end of June, and August adds the most, 977. Precipitation totals 9.9 inches a year, most in January (1.4") and least in July (0.5"); May to September bring 29% of it.
| Month | High °F | Low °F | Precip. in | 32°F night | Nights ≤ 32°F | GDD 50°F |
|---|---|---|---|---|---|---|
| Jan | 81 | 69 | 1.4 | 0% | 0 | 775 |
| Feb | 82 | 68 | 1.2 | 0% | 0 | 699 |
| Mar | 82 | 70 | 1.0 | 0% | 0 | 805 |
| Apr | 83 | 71 | 0.6 | 0% | 0 | 815 |
| May | 84 | 73 | 0.6 | 0% | 0 | 877 |
| Jun | 85 | 74 | 0.8 | 0% | 0 | 888 |
| Jul | 86 | 75 | 0.5 | 0% | 0 | 946 |
| Aug | 87 | 76 | 0.5 | 0% | 0 | 977 |
| Sep | 87 | 75 | 0.5 | 0% | 0 | 930 |
| Oct | 86 | 75 | 0.9 | 0% | 0 | 941 |
| Nov | 84 | 72 | 0.8 | 0% | 0 | 852 |
| Dec | 82 | 70 | 1.1 | 0% | 0 | 811 |
Monthly normals 1991–2020 at Kailua Kona Ke-Ahole Airport, HI (43 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, Ke-Ahole Pt 68.13, HI, 7 miles northwest of Kailua Kona, has no 32°F night on record either, and a coolest-month low 2°F colder (66°F).
When it snows in Kailua Kona, Hawaii
Measurable snow is rare here: only 0 of 20 winters from 1991 to 2020 recorded 0.1 inch or more at Lanihau 68.2, HI, 1.3 miles away, so there is no typical first-snow date to plan around.
Where these figures come from
ZIP 96740 is 6 miles from Kailua Kona Ke-Ahole Airport, HI, which stands at 43 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. The 2023 USDA Plant Hardiness Zone Map lists ZIP 96740 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.