Monthly outlook for Waimalu, HI: average high 77.6°, average low 72°. That is 1.7° below the climate normal for October. Precipitation is expected on 11 days (about 1.3 inches), against a normal of 5 days and 1.1 inches. The warmest day looks like 31 October (81°), the coolest 1 November (69.5°).
77.6°/72°
Average high / low
−1.7°
Below normal
11 / 5
Wet days / normal
1.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
29 October – 7 November
77.4°
81°
-2°
8 November – 17 November
77.9°
79.8°
-1.1°
18 November – 27 November
at normal
79°
—
October records over 66 years
90°1 October 2020All-time high
66°4 October 2023All-time low
Fri, 3078° / 73°0.02
78 °
Waimalu, Friday, 30 October
Light rain. High 78°, low 73°.
Pressure29.94 inHg
Wind8 mph NE
Humidity82%
Visibility6.2 mi
Dew point70°
Sat, 3181° / 71°0
81 °
Waimalu, Saturday, 31 October
Light rain. High 81°, low 71°.
Pressure29.97 inHg
Wind5.1 mph NE
Humidity61%
Visibility6.2 mi
Dew point64°
Sun, 0178° / 69°0.06
78 °
Waimalu, Sunday, 1 November
Light rain. High 78°, low 69°.
Pressure30.03 inHg
Wind11.3 mph NE
Humidity73%
Visibility6.2 mi
Dew point65°
Mon, 0276° / 70°0.08
76 °
Waimalu, Monday, 2 November
Light rain. High 76°, low 70°.
Pressure30.09 inHg
Wind15.6 mph NE
Humidity70%
Visibility—
Dew point63°
Tue, 0376° / 70°0.13
76 °
Waimalu, Tuesday, 3 November
Light rain. High 76°, low 70°.
Pressure30.12 inHg
Wind15.3 mph NE
Humidity67%
Visibility—
Dew point62°
Wed, 0477° / 70°0.06
77 °
Waimalu, Wednesday, 4 November
Light rain. High 77°, low 70°.
Pressure30.09 inHg
Wind15.4 mph NE
Humidity65%
Visibility—
Dew point64°
Thu, 0578° / 71°0.02
78 °
Waimalu, Thursday, 5 November
Light rain. High 78°, low 71°.
Pressure30.06 inHg
Wind17 mph E
Humidity67%
Visibility—
Dew point64°
Fri, 0676° / 72°0.07
76 °
Waimalu, Friday, 6 November
Light rain. High 76°, low 72°.
Pressure30.03 inHg
Wind13.2 mph NE
Humidity81%
Visibility—
Dew point69°
Sat, 0776° / 74°0.18
76 °
Waimalu, Saturday, 7 November
Light rain. High 76°, low 74°.
Pressure29.91 inHg
Wind20.2 mph NE
Humidity86%
Visibility—
Dew point72°
Sun, 0877° / 74°0.17
77 °
Waimalu, Sunday, 8 November
Light rain. High 77°, low 74°.
Pressure29.97 inHg
Wind16.1 mph NE
Humidity82%
Visibility—
Dew point70°
Mon, 0976° / 73°0.14
76 °
Waimalu, Monday, 9 November
Light rain. High 76°, low 73°.
Pressure30.03 inHg
Wind15.3 mph NE
Humidity84%
Visibility—
Dew point71°
Tue, 1077° / 73°0.05
77 °
Waimalu, Tuesday, 10 November
Light rain. High 77°, low 73°.
Pressure30.06 inHg
Wind13.7 mph NE
Humidity81%
Visibility—
Dew point70°
Wed, 1179° / 72°0
79 °
Waimalu, Wednesday, 11 November
Overcast. High 79°, low 72°.
Pressure30.09 inHg
Wind13.5 mph E
Humidity60%
Visibility—
Dew point63°
Thu, 1279° / 73°0.03
79 °
Waimalu, Thursday, 12 November
Light rain. High 79°, low 73°.
Pressure30.06 inHg
Wind10.1 mph E
Humidity73%
Visibility—
Dew point68°
Fri, 1379° / 74°0.08
79 °
Waimalu, Friday, 13 November
Light rain. High 79°, low 74°.
Pressure30.06 inHg
Wind12.5 mph E
Humidity72%
Visibility—
Dew point69°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 1480° / 73°0.1
80 °
Waimalu, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high80°
Average low73°
Average precipitation0.1 in
Chance of precipitation30%
Record high86° (2019)
Record low68° (2018)
Sun, 1580° / 73°0.09
80 °
Waimalu, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high80°
Average low73°
Average precipitation0.09 in
Chance of precipitation33%
Record high86° (2019)
Record low67° (2025)
Mon, 1679° / 73°0.04
79 °
Waimalu, Monday, 16 November
Climate normal for this date — 60-year average.
Average high79°
Average low73°
Average precipitation0.04 in
Chance of precipitation33%
Record high84° (2019)
Record low68° (2025)
Tue, 1779° / 73°0.06
79 °
Waimalu, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high79°
Average low73°
Average precipitation0.06 in
Chance of precipitation27%
Record high84° (2021)
Record low68° (1974)
Wed, 1879° / 72°0.19
79 °
Waimalu, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high79°
Average low72°
Average precipitation0.19 in
Chance of precipitation22%
Record high85° (2021)
Record low65° (2017)
Thu, 1979° / 73°0.14
79 °
Waimalu, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high79°
Average low73°
Average precipitation0.14 in
Chance of precipitation32%
Record high85° (2019)
Record low65° (2017)
Fri, 2079° / 73°0.09
79 °
Waimalu, Friday, 20 November
Climate normal for this date — 60-year average.
Average high79°
Average low73°
Average precipitation0.09 in
Chance of precipitation33%
Record high85° (2021)
Record low64° (2017)
Sat, 2179° / 73°0.05
79 °
Waimalu, Saturday, 21 November
Climate normal for this date — 60-year average.
Average high79°
Average low73°
Average precipitation0.05 in
Chance of precipitation28%
Record high83° (2022)
Record low63° (2017)
Sun, 2279° / 73°0.06
79 °
Waimalu, Sunday, 22 November
Climate normal for this date — 60-year average.
Average high79°
Average low73°
Average precipitation0.06 in
Chance of precipitation40%
Record high83° (2025)
Record low64° (2024)
Mon, 2379° / 73°0.07
79 °
Waimalu, Monday, 23 November
Climate normal for this date — 60-year average.
Average high79°
Average low73°
Average precipitation0.07 in
Chance of precipitation23%
Record high83° (2021)
Record low62° (2024)
Tue, 2479° / 72°0.06
79 °
Waimalu, Tuesday, 24 November
Climate normal for this date — 60-year average.
Average high79°
Average low72°
Average precipitation0.06 in
Chance of precipitation28%
Record high86° (2023)
Record low61° (2024)
Wed, 2579° / 72°0.04
79 °
Waimalu, Wednesday, 25 November
Climate normal for this date — 60-year average.
Average high79°
Average low72°
Average precipitation0.04 in
Chance of precipitation30%
Record high86° (2019)
Record low67° (2017)
Thu, 2679° / 72°0.08
79 °
Waimalu, Thursday, 26 November
Climate normal for this date — 60-year average.
Average high79°
Average low72°
Average precipitation0.08 in
Chance of precipitation30%
Record high86° (2019)
Record low66° (2022)
Fri, 2778° / 72°0.11
78 °
Waimalu, Friday, 27 November
Climate normal for this date — 60-year average.
Average high78°
Average low72°
Average precipitation0.11 in
Chance of precipitation30%
Record high84° (2025)
Record low63° (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 Waimalu, 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 Waimalu, 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.