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Kaloko, HI Weather
Kaloko, Hawaii sits at 19.7284, -155.9537. Its warmest month is August, when the day usually reaches 87F, and its coldest is January, when the night usually falls to 68F. May is the wettest, with rain on about 6 days. The hottest day in the station record is 96F on September 25, 2015, and the coldest night 59F on February 10, 2019. This page carries live conditions, an hour by hour timeline, a ten day outlook, radar, monthly averages and searchable daily history back to 1940.
About Kaloko weather
Kaloko sits at 19.7284, -155.9537 and covers about 13.508 square miles. The forecast above is live: current conditions lead with the HRRR model, corrected against the nearest reporting station and against radar overhead, because a model can lag a storm and the radar cannot.
The tabs at the top of this page carry the hour by hour timeline, the ten day outlook and live radar. Where the models disagree about a day, the rock says so on the day rather than quietly picking a winner.
The rock grades itself against what actually happened and publishes the result whether it flatters it or not. Those standings live in the Receipts.
Where these numbers come from
Current conditions and forecast: NOAA forecast grids (the National Weather Service digital forecast, the National Blend of Models, HRRR and GFS) decoded on our own server, corrected against the nearest reporting station and our own radar. Open-Meteo is consulted only as a fallback when our server is silent.
Radar: NOAA MRMS merged reflectivity, rendered into tiles by myweatherrock.
Monthly averages and records: computed by myweatherrock from NOAA GHCN-Daily station records at the nearest qualifying station, named on this page with its distance. Measurements, not estimates.
Daily history search: the town's own NOAA GHCN-Daily station file, held on our server, measurements by day. Months the station missed fall back to the Open-Meteo historical archive (reanalysis), and the page says so when it does.
What the weather is usually like in Kaloko
Kaloko is warmest in August, when the day usually reaches 87F, and coldest in January, when the night usually falls to 68F. May is the wettest month, with rain on about 6 days of it.
Usual high and low, by month
Days with rain, by month
The same year as numbers
Month
Usual high
Usual low
Rain days
January
82F
68F
3
February
82F
68F
3
March
82F
70F
4
April
83F
71F
4
May
84F
72F
6
June
85F
74F
5
July
86F
75F
4
August
87F
75F
4
September
87F
75F
5
October
86F
74F
4
November
84F
72F
3
December
82F
70F
3
Thirty-year normals, 1991 to 2020, computed from the daily record, measured at the Kailua Kona Ke-Ahole Ap station 6.2 miles away. A rain day means at least a hundredth of an inch fell, the same measurable-precipitation mark the Weather Service uses. Source: computed from the station record, NOAA GHCN daily.
Kaloko weather history, back to 1940
Pick any month back to 1940 and see what the archive holds for Kaloko: the reanalysis record of what happened, day by day.
Reading this month last year to start you off.
Kaloko weather records
In 32,439 days of observations Kaloko has been as hot as 96F and as cold as 59F. Not averages: the actual days.
Hottest day
96F
September 25, 2015
Coldest night
59F
February 10, 2019
Wettest day
4.08 in
November 2, 2000
NOAA GHCN daily station records, observed 1998 to 2025: temperature at the Kailua Kona Ke-Ahole Ap station, 6.2 miles away. Station measurements, not estimates. Record dates reflect the station's own observation schedule, and the official state record may live at a different station.
Common questions about Kaloko weather
Common questions
What is the weather usually like in Kaloko, HI?
Kaloko is warmest in August, when the day usually reaches 87F, and coldest in January, when the night usually falls to 68F. Rain falls on roughly 48 days a year, most often in May. Averages are thirty-year normals, 1991 to 2020, computed from the nearest NOAA station's own daily record.
How much does it rain in Kaloko, HI?
About 48 days a year see at least a hundredth of an inch, which is the Weather Service's measurable-precipitation mark. May is the wettest month with rain on about 6 of its days, and January the driest with about 3.
What is the hottest it has ever been in Kaloko, HI?
The hottest day measured for Kaloko reached 96F on September 25, 2015, and the coldest night 59F on February 10, 2019. Both are real NOAA station measurements from the GHCN daily archive, observed 1998 to 2025, at the Kailua Kona Ke-Ahole Ap station. Not estimates, though the official state record may live at a different station.
Can I look up past weather for Kaloko, HI?
Yes, and for free. The History tab on this page takes any month back to 1940 and shows every day of it: the high, the low, what fell, and that month's hottest and coldest day. No account and no payment.
Is the Kaloko forecast on this page free, and does it track me?
It is free, carries no advertising, and needs no account. Nothing about a visitor leaves the device except the coordinates needed to fetch a forecast, and those are not stored against anyone.