Haleakala Ranger Station 338, Hawaii climate: Climate normals at a NOAA weather station
Haleakala Ranger Station 338's normal year runs from 43°F February nights to 66°F August afternoons, with 42.3 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 12.5°C, February lows of 6°C, August highs of 19°C, 1,073 mm of precipitation a year.
- NOAA stationHaleakala Ranger Station 338
- Station IDUSC00511004
- Location20.76°N 156.25°W
- Elevation6,962 ft (2,122 m)
On October 14, the normal high in Haleakala Ranger Station 338 is 64°F and the normal low 48°F, and the chance of measurable rain or snow is 39%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Haleakala Ranger Station 338.
- Jan 61° 44°
- Feb 60° 43°
- Mar 60° 43°
- Apr 61° 44°
- May 63° 46°
- Jun 66° 48°
- Jul 66° 49°
- Aug 66° 49°
- Sep 65° 48°
- Oct 64° 48°
- Nov 63° 47°
- Dec 61° 45°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like at Haleakala Ranger Station 338 each month?
August is the warmest month, with normal highs of 66°F; February the coldest, with normal lows of 43°F. The most precipitation falls in March (5.70 in), the least in June (1.62 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 61°F | 44°F | 52.5°F | 5.14 | 9 | <1 | <1 | 11 h |
| February | 60°F | 43°F | 51.2°F | 4.08 | 9 | <1 | <1 | 11 h 30 min |
| March | 60°F | 43°F | 51.4°F | 5.70 | 13 | <1 | <1 | 12 h |
| April | 61°F | 44°F | 52.2°F | 2.75 | 12 | <1 | <1 | 12 h 40 min |
| May | 63°F | 46°F | 54.6°F | 2.44 | 9 | <1 | <1 | 13 h 10 min |
| June | 66°F | 48°F | 56.6°F | 1.62 | 9 | <1 | <1 | 13 h 20 min |
| July | 66°F | 49°F | 57.2°F | 2.70 | 11 | <1 | <1 | 13 h 20 min |
| August | 66°F | 49°F | 57.7°F | 2.17 | 11 | <1 | <1 | 12 h 50 min |
| September | 65°F | 48°F | 56.3°F | 2.53 | 12 | <1 | <1 | 12 h 20 min |
| October | 64°F | 48°F | 55.9°F | 3.25 | 12 | <1 | <1 | 11 h 40 min |
| November | 63°F | 47°F | 55.0°F | 4.59 | 12 | <1 | <1 | 11 h 10 min |
| December | 61°F | 45°F | 53.1°F | 5.28 | 12 | <1 | <1 | 10 h 50 min |
| Year (annual) | 63°F | 46°F | 54.5°F | 42.25 | 130 | <1 | <1 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 16°C | 7°C | 11.4°C | 131 mm |
| February | 15°C | 6°C | 10.7°C | 104 mm |
| March | 15°C | 6°C | 10.8°C | 145 mm |
| April | 16°C | 7°C | 11.2°C | 70 mm |
| May | 17°C | 8°C | 12.6°C | 62 mm |
| June | 19°C | 9°C | 13.7°C | 41 mm |
| July | 19°C | 9°C | 14.0°C | 69 mm |
| August | 19°C | 10°C | 14.3°C | 55 mm |
| September | 18°C | 9°C | 13.5°C | 64 mm |
| October | 18°C | 9°C | 13.3°C | 83 mm |
| November | 17°C | 8°C | 12.8°C | 117 mm |
| December | 16°C | 7°C | 11.7°C | 134 mm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00511004; annual normals. Wet days: 0.01 inch or more; 90°F days and freezing nights: NOAA's day counts. Daylight: sunrise to sunset on the 15th, computed from the latitude.
Which months are mildest at Haleakala Ranger Station 338?
Normal highs sit between 65°F and 85°F in June, July and August. Of those, June has the fewest days with rain (9).
That is a measurement, not a recommendation: it counts the months whose normal afternoon high sits between 65°F and 85°F, where a light layer is enough by day.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00511004.
How hot and how cold does it get at Haleakala Ranger Station 338?
In a normal year in Haleakala Ranger Station 338, a 90°F day is rare, nights almost never fall to freezing and 130 days bring measurable precipitation.
- Days at 90°F or more
- fewer than 1a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- fewer than 1a normal year
- Days that stay below freezing
- fewer than 1high of 32°F or less
- Days with 0.01 inch of precipitation
- 130a normal year
The highest temperature in this station's record (since 1940) is 80°F, on July 17, 1947; the lowest is 27°F, on February 26, 1965.
The wettest calendar year on that record is 1980, with 121.16 in.
Source: NOAA NCEI 1991-2020 annual normals, station USC00511004; records: ACIS (NOAA Regional Climate Centers), station USC00511004. Records use complete months only; a month missing more than three days is left out.
How sunny is it at Haleakala Ranger Station 338?
Over a year 86% of the sunlight that would reach the ground under clear skies gets through the clouds at Haleakala Ranger Station 338, 5.8 kWh per square metre a day. August is the sunniest month (88%) and March the cloudiest (81%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 85% | 4.5 |
| February | 84% | 5.1 |
| March | 81% | 5.6 |
| April | 85% | 6.5 |
| May | 87% | 6.8 |
| June | 87% | 7.0 |
| July | 88% | 7.0 |
| August | 88% | 6.8 |
| September | 88% | 6.3 |
| October | 86% | 5.4 |
| November | 84% | 4.6 |
| December | 83% | 4.1 |
Source: NASA POWER solar climatology, 2001-2020 (CERES SYN1deg). Satellite-based, for the 1-degree cell (about 100 km across) around the station, so it describes the area rather than the airport.
How many heating and cooling degree days does Haleakala Ranger Station 338 record?
A normal year at Haleakala Ranger Station 338 brings 3,833 heating degree days, 29% fewer than the median U.S. place (5,373), and 2 cooling degree days, 100% fewer than the median (908). Six months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 1,753 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 389 | 0 |
| February | 386 | 0 |
| March | 422 | 0 |
| April | 383 | 0 |
| May | 325 | 1 |
| June | 251 | 0 |
| July | 242 | 0 |
| August | 225 | 0 |
| September | 261 | 0 |
| October | 282 | 0 |
| November | 299 | 0 |
| December | 369 | 0 |
| Year (annual) | 3,833 | 2 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00511004. A degree day is one degree of a day's mean temperature below 65°F (heating) or above it (cooling); utilities use them to estimate energy use.
How does Haleakala Ranger Station 338's climate compare?
Haleakala Ranger Station 338 is warmer than 0 of the 18 places with their own NOAA record in Hawaii, and wetter than 10. Across the 7,247 U.S. stations with normals, its annual mean of 54.5°F is warmer than 59%.
In the Köppen classification computed from these normals, Haleakala Ranger Station 338 is Cfb: temperate, no dry season, warm summer. What the classes mean.
Places with the most similar year elsewhere
Measured month by month on the normal high, low and precipitation, among places of 20,000 or more people in other states:
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers. Similarity: the root-mean-square difference of the 36 monthly figures, precipitation weighted so an inch counts like 6°F.
Questions about Haleakala Ranger Station 338's climate
What is the coldest month at Haleakala Ranger Station 338?
February, with a normal high of 60°F and a normal low of 43°F. The warmest is August (66°F by day, 49°F at night).
Does it snow at Haleakala Ranger Station 338?
Rarely: NOAA's normal is no measurable snow a year.
What is the rainiest month at Haleakala Ranger Station 338?
March, with 5.70 in of precipitation in a normal year; the driest is June with 1.62 in.
What plant hardiness zone is Haleakala Ranger Station 338 in?
The USDA's 2023 map puts Haleakala Ranger Station 338 in zone 12a in ZIP code 96790, the nearest ZIP area.
Nearby and next
- Hawaii climateThe statewide normals and every place in the state
- Kula, HI5 miles from this station, 63.9°F a year
- Kula Hospital 267, HI8 miles from this station, 62.9°F a year
- Ohe'o 258.6, HI15 miles from this station, 75.4°F a year
- Makena, HI15 miles from this station, 75.1°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made