USDA Hardiness Zone 12a
Frost Dates for 96790 — Kula, Hawaii
NOAA 1991–2020 normals from Kula Hospital 267, HI (3,030 ft), 2 miles southwest.
Updated
No night at or below 32°F was recorded at Kula Hospital 267, HI in 1991–2020, not even 36°F, so Kula has no frost dates to plan around; the coolest month, February, averages a low of 51°F.
- Winters with a freeze
- 0%
- Winters with 36°F
- 0%
- Coldest month low
- 51°F
- Hardiness zone
- 12a
32°F or below, 1991–2020
frost possible on leaves
average, February
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
- 0"
median, 1991–2020
median, 1991–2020
0 of 20 observed
NOAA normal
Frost risk by date in Kula
Kula Hospital 267, HI, 2 miles southwest of Kula, 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 Kula Hospital 267, 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 96790 →Compare Kula with another place →
Weather by month in Kula
August is the warmest month at Kula Hospital 267, HI, averaging 75°F by day and 58°F at night; February is the coldest at 68°F and 51°F. Not one month recorded a 32°F night; the lowest monthly average low is 51°F.
Warmth for growing adds up to 4,714 growing degree days a year (base 50°F), fewer than at 94% of the 35 Hawaii stations. 43% of them (2,049) have built up by the end of June, and August adds the most, 502. Precipitation totals 31.0 inches a year, most in January (3.9") and least in June (1.2"); May to September bring 35% of it.
| Month | High °F | Low °F | Precip. in | 32°F night | Nights ≤ 32°F | GDD 50°F |
|---|---|---|---|---|---|---|
| Jan | 68 | 51 | 3.9 | 0% | 0 | 299 |
| Feb | 68 | 51 | 2.9 | 0% | 0 | 266 |
| Mar | 68 | 52 | 3.4 | 0% | 0 | 316 |
| Apr | 70 | 53 | 2.1 | 0% | 0 | 344 |
| May | 71 | 55 | 2.8 | 0% | 0 | 394 |
| Jun | 73 | 56 | 1.2 | 0% | 0 | 431 |
| Jul | 74 | 57 | 2.1 | 0% | 0 | 481 |
| Aug | 75 | 58 | 2.0 | 0% | 0 | 502 |
| Sep | 75 | 58 | 2.7 | 0% | 0 | 480 |
| Oct | 73 | 57 | 2.7 | 0% | 0 | 465 |
| Nov | 71 | 55 | 2.4 | 0% | 0 | 401 |
| Dec | 69 | 53 | 2.8 | 0% | 0 | 336 |
Monthly normals 1991–2020 at Kula Hospital 267, HI (3,030 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, Haleakala Rs 338, HI, 7 miles east of Kula and 3,932 feet higher, has a 32°F night in 6% of winters against 0% here, and a coolest-month low 8°F colder (43°F).
When it snows in Kula, Hawaii
Measurable snow is rare here: only 0 of 20 winters from 1991 to 2020 recorded 0.1 inch or more at Kula Hospital 267, HI, 1.9 miles away, so there is no typical first-snow date to plan around.
Where these figures come from
ZIP 96790 is 2 miles from Kula Hospital 267, HI, which stands at 3,030 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 1 other ZIP code shares the station; its figures are presented in full for 96753 (Kihei). The 2023 USDA Plant Hardiness Zone Map lists ZIP 96790 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.