Monthly outlook for Makaha Valley, HI: average high 79.8°, average low 73.8°. That is 1° below the climate normal for August. Precipitation is expected on 4 days (about 0.5 inches), against a normal of 5 days and 0.6 inches. The warmest day looks like 24 August (81.8°), the coolest 13 August (72.6°).
79.8°/73.8°
Average high / low
−1°
Below normal
4 / 5
Wet days / normal
0.5 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
79.5°
81.6°
-1.1°
19 August – 28 August
80.3°
81.6°
-0.7°
29 August – 7 September
at normal
81.8°
—
August records over 66 years
88°11 August 2025All-time high
62.6°31 August 2021All-time low
Climate normals and records are computed from the nearest reference point — Schofield Barracks (8 mi).
Mon, 1081° / 75°0
81 °
Makaha Valley, Monday, 10 August
Light rain. High 81°, low 75°.
Pressure29.97 inHg
Wind10.4 mph NE
Humidity66%
Visibility6.2 mi
Dew point70°
Tue, 1182° / 73°0
82 °
Makaha Valley, Tuesday, 11 August
Overcast. High 82°, low 73°.
Pressure29.94 inHg
Wind3.5 mph NE
Humidity59%
Visibility6.2 mi
Dew point66°
Wed, 1280° / 73°0
80 °
Makaha Valley, Wednesday, 12 August
Overcast. High 80°, low 73°.
Pressure29.94 inHg
Wind10.8 mph NE
Humidity64%
Visibility6.2 mi
Dew point67°
Thu, 1380° / 73°0
80 °
Makaha Valley, Thursday, 13 August
Mostly clear. High 80°, low 73°.
Pressure29.97 inHg
Wind17.4 mph NE
Humidity64%
Visibility—
Dew point65°
Fri, 1479° / 73°0
79 °
Makaha Valley, Friday, 14 August
Partly cloudy. High 79°, low 73°.
Pressure29.94 inHg
Wind15.5 mph NE
Humidity66%
Visibility—
Dew point65°
Sat, 1580° / 74°0
80 °
Makaha Valley, Saturday, 15 August
Mostly clear. High 80°, low 74°.
Pressure29.97 inHg
Wind19.1 mph NE
Humidity69%
Visibility—
Dew point67°
Sun, 1678° / 73°0.07
78 °
Makaha Valley, Sunday, 16 August
Light rain. High 78°, low 73°.
Pressure29.94 inHg
Wind17.3 mph N
Humidity75%
Visibility—
Dew point68°
Mon, 1778° / 74°0.26
78 °
Makaha Valley, Monday, 17 August
Light rain. High 78°, low 74°.
Pressure29.88 inHg
Wind13.1 mph S
Humidity83%
Visibility—
Dew point70°
Tue, 1880° / 75°0.01
80 °
Makaha Valley, Tuesday, 18 August
Light rain. High 80°, low 75°.
Pressure30.00 inHg
Wind10.8 mph S
Humidity68%
Visibility—
Dew point67°
Wed, 1981° / 74°0.02
81 °
Makaha Valley, Wednesday, 19 August
Light rain. High 81°, low 74°.
Pressure30.03 inHg
Wind11.7 mph NE
Humidity68%
Visibility—
Dew point68°
Thu, 2079° / 74°0.02
79 °
Makaha Valley, Thursday, 20 August
Light rain. High 79°, low 74°.
Pressure30.00 inHg
Wind11.9 mph NE
Humidity68%
Visibility—
Dew point66°
Fri, 2179° / 73°0
79 °
Makaha Valley, Friday, 21 August
Mostly clear. High 79°, low 73°.
Pressure29.97 inHg
Wind13.9 mph NE
Humidity66%
Visibility—
Dew point65°
Sat, 2281° / 74°0
81 °
Makaha Valley, Saturday, 22 August
Overcast. High 81°, low 74°.
Pressure29.94 inHg
Wind10.6 mph E
Humidity65%
Visibility—
Dew point65°
Sun, 2380° / 75°0.04
80 °
Makaha Valley, Sunday, 23 August
Light rain. High 80°, low 75°.
Pressure29.97 inHg
Wind12.8 mph NE
Humidity69%
Visibility—
Dew point68°
Mon, 2482° / 75°0.04
82 °
Makaha Valley, Monday, 24 August
Light rain. High 82°, low 75°.
Pressure30.00 inHg
Wind10.7 mph NE
Humidity73%
Visibility—
Dew point69°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2582° / 73°0.04
82 °
Makaha Valley, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high82°
Average low73°
Average precipitation0.04 in
Chance of precipitation17%
Record high85° (1996)
Record low67° (2025)
Wed, 2681° / 73°0.04
81 °
Makaha Valley, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high81°
Average low73°
Average precipitation0.04 in
Chance of precipitation28%
Record high85° (1996)
Record low67° (2021)
Thu, 2782° / 73°0.03
82 °
Makaha Valley, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high82°
Average low73°
Average precipitation0.03 in
Chance of precipitation25%
Record high85° (2019)
Record low65° (2024)
Fri, 2882° / 73°0.03
82 °
Makaha Valley, Friday, 28 August
Climate normal for this date — 60-year average.
Average high82°
Average low73°
Average precipitation0.03 in
Chance of precipitation32%
Record high86° (2019)
Record low66° (2022)
Sat, 2982° / 73°0.02
82 °
Makaha Valley, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high82°
Average low73°
Average precipitation0.02 in
Chance of precipitation23%
Record high88° (2019)
Record low67° (2023)
Sun, 3082° / 73°0.03
82 °
Makaha Valley, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high82°
Average low73°
Average precipitation0.03 in
Chance of precipitation32%
Record high85° (2025)
Record low65° (2025)
Mon, 3182° / 73°0.04
82 °
Makaha Valley, Monday, 31 August
Climate normal for this date — 60-year average.
Average high82°
Average low73°
Average precipitation0.04 in
Chance of precipitation33%
Record high86° (2019)
Record low63° (2021)
Tue, 0182° / 73°0.04
82 °
Makaha Valley, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high82°
Average low73°
Average precipitation0.04 in
Chance of precipitation43%
Record high85° (2019)
Record low65° (2021)
Wed, 0282° / 73°0.03
82 °
Makaha Valley, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high82°
Average low73°
Average precipitation0.03 in
Chance of precipitation33%
Record high85° (1997)
Record low66° (2025)
Thu, 0382° / 73°0.05
82 °
Makaha Valley, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high82°
Average low73°
Average precipitation0.05 in
Chance of precipitation42%
Record high86° (2019)
Record low66° (2018)
Fri, 0482° / 73°0.04
82 °
Makaha Valley, Friday, 4 September
Climate normal for this date — 60-year average.
Average high82°
Average low73°
Average precipitation0.04 in
Chance of precipitation33%
Record high87° (2023)
Record low64° (2023)
Sat, 0582° / 73°0.03
82 °
Makaha Valley, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high82°
Average low73°
Average precipitation0.03 in
Chance of precipitation32%
Record high87° (2023)
Record low64° (2023)
Sun, 0682° / 73°0.02
82 °
Makaha Valley, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high82°
Average low73°
Average precipitation0.02 in
Chance of precipitation15%
Record high86° (2023)
Record low65° (2023)
Mon, 0782° / 73°0.02
82 °
Makaha Valley, Monday, 7 September
Climate normal for this date — 60-year average.
Average high82°
Average low73°
Average precipitation0.02 in
Chance of precipitation25%
Record high85° (2025)
Record low64° (2025)
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 Makaha Valley, 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 Makaha Valley, 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.