Monthly outlook for Niu, HI: average high 77.8°, average low 76.5°. That is 1.4° below the climate normal for October. Precipitation is expected on 7 days (about 0.7 inches), against a normal of 4 days and 0.8 inches. The warmest day looks like 15 October (78.6°), the coolest 14 October (74.3°).
77.8°/76.5°
Average high / low
−1.4°
Below normal
7 / 4
Wet days / normal
0.7 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
14 October – 23 October
77.7°
80.6°
-1.6°
24 October – 2 November
77.9°
79.8°
-1.1°
3 November – 12 November
at normal
79.1°
—
October records over 66 years
87.6°1 October 2020All-time high
66.6°26 October 2023All-time low
Climate normals and records are computed from the nearest reference point — Honolulu (8 mi).
Thu, 1579° / 77°0.05
79 °
Niu, Thursday, 15 October
Light rain. High 79°, low 77°.
Pressure30.00 inHg
Wind13.4 mph E
Humidity76%
Visibility6.2 mi
Dew point70°
Fri, 1678° / 77°0.05
78 °
Niu, Friday, 16 October
Light rain. High 78°, low 77°.
Pressure30.03 inHg
Wind18.9 mph E
Humidity73%
Visibility6.2 mi
Dew point69°
Sat, 1778° / 77°0.12
78 °
Niu, Saturday, 17 October
Light rain. High 78°, low 77°.
Pressure30.03 inHg
Wind19.8 mph NE
Humidity70%
Visibility6.2 mi
Dew point67°
Sun, 1878° / 77°0.11
78 °
Niu, Sunday, 18 October
Light rain. High 78°, low 77°.
Pressure30.06 inHg
Wind25 mph NE
Humidity74%
Visibility—
Dew point69°
Mon, 1978° / 77°0.04
78 °
Niu, Monday, 19 October
Light rain. High 78°, low 77°.
Pressure30.06 inHg
Wind23.8 mph E
Humidity75%
Visibility—
Dew point69°
Tue, 2078° / 77°0.06
78 °
Niu, Tuesday, 20 October
Light rain. High 78°, low 77°.
Pressure30.06 inHg
Wind22.9 mph E
Humidity78%
Visibility—
Dew point70°
Wed, 2177° / 77°0.04
77 °
Niu, Wednesday, 21 October
Light rain. High 77°, low 77°.
Pressure30.06 inHg
Wind21 mph E
Humidity70%
Visibility—
Dew point67°
Thu, 2277° / 76°0.06
77 °
Niu, Thursday, 22 October
Light rain. High 77°, low 76°.
Pressure30.03 inHg
Wind12.1 mph E
Humidity67%
Visibility—
Dew point65°
Fri, 2377° / 76°0.01
77 °
Niu, Friday, 23 October
Light rain. High 77°, low 76°.
Pressure30.06 inHg
Wind15.3 mph E
Humidity66%
Visibility—
Dew point64°
Sat, 2478° / 76°0.04
78 °
Niu, Saturday, 24 October
Light rain. High 78°, low 76°.
Pressure30.09 inHg
Wind23.6 mph E
Humidity72%
Visibility—
Dew point68°
Sun, 2578° / 77°0
78 °
Niu, Sunday, 25 October
Partly cloudy. High 78°, low 77°.
Pressure30.09 inHg
Wind22.3 mph E
Humidity67%
Visibility—
Dew point66°
Mon, 2678° / 77°0.03
78 °
Niu, Monday, 26 October
Light rain. High 78°, low 77°.
Pressure30.06 inHg
Wind25.7 mph E
Humidity73%
Visibility—
Dew point68°
Tue, 2778° / 77°0.03
78 °
Niu, Tuesday, 27 October
Light rain. High 78°, low 77°.
Pressure30.09 inHg
Wind21.9 mph E
Humidity77%
Visibility—
Dew point70°
Wed, 2878° / 77°0.02
78 °
Niu, Wednesday, 28 October
Light rain. High 78°, low 77°.
Pressure30.09 inHg
Wind22.3 mph E
Humidity71%
Visibility—
Dew point67°
Thu, 2978° / 77°0.01
78 °
Niu, Thursday, 29 October
Light rain. High 78°, low 77°.
Pressure30.03 inHg
Wind13.1 mph E
Humidity72%
Visibility—
Dew point67°
From day 17 onward the outlook is built from 60-year climate statistics
Fri, 3080° / 74°0.09
80 °
Niu, Friday, 30 October
Climate normal for this date — 60-year average.
Average high80°
Average low74°
Average precipitation0.09 in
Chance of precipitation28%
Record high87° (2023)
Record low69° (1966)
Sat, 3180° / 74°0.07
80 °
Niu, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high80°
Average low74°
Average precipitation0.07 in
Chance of precipitation30%
Record high85° (2023)
Record low69° (2021)
Sun, 0180° / 74°0.06
80 °
Niu, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high80°
Average low74°
Average precipitation0.06 in
Chance of precipitation18%
Record high85° (2023)
Record low69° (2023)
Mon, 0280° / 74°0.12
80 °
Niu, Monday, 2 November
Climate normal for this date — 60-year average.
Average high80°
Average low74°
Average precipitation0.12 in
Chance of precipitation30%
Record high87° (2023)
Record low67° (1976)
Tue, 0380° / 74°0.05
80 °
Niu, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high80°
Average low74°
Average precipitation0.05 in
Chance of precipitation25%
Record high86° (2023)
Record low70° (1989)
Wed, 0480° / 74°0.11
80 °
Niu, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high80°
Average low74°
Average precipitation0.11 in
Chance of precipitation20%
Record high84° (2022)
Record low69° (1992)
Thu, 0580° / 74°0.09
80 °
Niu, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high80°
Average low74°
Average precipitation0.09 in
Chance of precipitation27%
Record high86° (2019)
Record low69° (1978)
Fri, 0680° / 74°0.07
80 °
Niu, Friday, 6 November
Climate normal for this date — 60-year average.
Average high80°
Average low74°
Average precipitation0.07 in
Chance of precipitation32%
Record high86° (2025)
Record low69° (1973)
Sat, 0779° / 74°0.06
79 °
Niu, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high79°
Average low74°
Average precipitation0.06 in
Chance of precipitation33%
Record high85° (2025)
Record low69° (2025)
Sun, 0879° / 74°0.04
79 °
Niu, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high79°
Average low74°
Average precipitation0.04 in
Chance of precipitation27%
Record high85° (2023)
Record low70° (2025)
Mon, 0979° / 74°0.03
79 °
Niu, Monday, 9 November
Climate normal for this date — 60-year average.
Average high79°
Average low74°
Average precipitation0.03 in
Chance of precipitation27%
Record high85° (2023)
Record low68° (2019)
Tue, 1079° / 73°0.02
79 °
Niu, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high79°
Average low73°
Average precipitation0.02 in
Chance of precipitation20%
Record high85° (2019)
Record low69° (1969)
Wed, 1179° / 73°0.06
79 °
Niu, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high79°
Average low73°
Average precipitation0.06 in
Chance of precipitation18%
Record high84° (2019)
Record low69° (1990)
Thu, 1278° / 73°0.06
78 °
Niu, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high78°
Average low73°
Average precipitation0.06 in
Chance of precipitation23%
Record high84° (2019)
Record low70° (1961)
About the monthly outlook
How accurate is a 30-day forecast?
The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for Niu, HI are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.
What does "above normal" mean?
We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.
Where do the 66-year records come from?
They are real temperature extremes recorded in Niu, HI since 1960: the highest and lowest reading for each calendar date, with the year it happened.
How often is it updated?
The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.