How extreme does Mililani Town's weather get?

The hottest, coldest, wettest and snowiest days Mililani Town has recorded — the outer limits of what its weather can do, and how far they sit beyond a normal day.

Based on 50+ years of daily weather observations (1971–present), from the Honolulu Intl Ap station 16 km away. Updated through May 2026 — an all-time extreme only changes when a more extreme day actually occurs, so some dates are old. That is normal, not stale data.

The four kinds of extreme

The hottest, coldest, wettest and snowiest single days Mililani Town has recorded — each shown against what a normal day that time of year looks like.

🔥 Hottest day

95°F Sep 19, 1994

That is about 7°F hotter than a normal September afternoon in Mililani Town (typical high near 88°F).

The three most extreme on record

1 95°F Sep 19, 1994

2 95°F Aug 31, 2019

3 94°F Oct 6, 1984

❄️ Coldest night

53°F Jan 31, 1972

About 14°F colder than a normal January night in Mililani Town (typical low near 67°F).

The three most extreme on record

1 53°F Jan 31, 1972

2 53°F Feb 1, 1976

3 53°F Feb 2, 1976

🌧️ Most rain in one day

7.92 in Dec 6, 2021

More rain in a single day than Mililani Town usually gets in the whole month of December (typical December total about 2.2 in).

The three most extreme on record

1 7.92 in Dec 6, 2021recent

2 7.89 in Dec 12, 1987

3 7.47 in Oct 30, 1978

How hot and cold it gets, month by month

The shaded band is the normal range of daily temperatures for each month. The dots show the most extreme it has ever been — so you can see how far beyond a normal day the records really sit.

normal range of daily temperatureshottest ever recordedcoldest ever recorded

Mililani Town's record heat sits well above even a hot day for the season — September's 95°F is about 7°F beyond a normal hot afternoon. Its record cold is just as far below a normal winter night — the dots mark how rare each extreme really is.

In plain terms

In a normal year, Mililani Town's warmest days reach the high 80s°F and its coldest nights drop to the high 60s°F. But across the record it has gone as high as 95°F and as low as 53°F. A single day has delivered over 8 inches of rain. Those are the outer edges worth knowing if you are moving here, planning a trip, or thinking about a house.

Methodology & sources

Temperature & precipitation — the official 1991–2020 climate normals from NOAA's U.S. Climate Normals, measured at Honolulu Intl AP (NOAA GHCN station USW00022521), about 16 km from the city centre.

How we build these numbers →

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