As of 11:08 HST

Weather in Waipahu, HI

84°

Waipahu, Thursday, 22 October, 11:08

Overcast. Feels like 86°. High 84°, low 75°.

Pressure30.00 inHg

Wind11.5 mph NE

Humidity53%

Visibility6.2 mi

Dew point66°

See detailed hourly forecast

Monthly outlook for Waipahu, HI: average high 78.3°, average low 73.8°. That is 2.1° below the climate normal for October. Precipitation is expected on 6 days (about 7.0 inches), against a normal of 4 days and 1.0 inches. The warmest day looks like 22 October (84.4°), the coolest 27 October (70.2°).

78.3°/73.8°

Average high / low

−2.1°

Below normal

6 / 4

Wet days / normal

7.0 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
22 October – 31 October	78.9°	82.3°	-1.9°
1 November – 10 November	77.4°	81.7°	-2.4°
11 November – 20 November	at normal	80.5°	—

October records over 66 years

89.8°1 October 2024All-time high

67.8°26 October 2017All-time low

Fri, 2382° / 75°

82 °

Waipahu, Friday, 23 October

Overcast. High 82°, low 75°.

Pressure30.00 inHg

Wind6.6 mph NE

Humidity59%

Visibility6.2 mi

Dew point66°

Sat, 2481° / 75°

81 °

Waipahu, Saturday, 24 October

Overcast. High 81°, low 75°.

Pressure30.00 inHg

Wind8.8 mph NE

Humidity60%

Visibility6.2 mi

Dew point65°

Sun, 2579° / 75°

79 °

Waipahu, Sunday, 25 October

Light rain. High 79°, low 75°.

Pressure29.97 inHg

Wind13.4 mph N

Humidity59%

Visibility6.2 mi

Dew point63°

Mon, 2678° / 74°

78 °

Waipahu, Monday, 26 October

Overcast. High 78°, low 74°.

Pressure29.94 inHg

Wind8.2 mph W

Humidity60%

Visibility—

Dew point63°

Tue, 2775° / 70°

2.85

75 °

Waipahu, Tuesday, 27 October

Heavy rain. High 75°, low 70°.

Pressure29.88 inHg

Wind11.9 mph NE

Humidity94%

Visibility—

Dew point69°

Wed, 2878° / 75°

2.13

78 °

Waipahu, Wednesday, 28 October

Heavy rain. High 78°, low 75°.

Pressure29.91 inHg

Wind7.7 mph S

Humidity92%

Visibility—

Dew point73°

Thu, 2979° / 73°

0.86

79 °

Waipahu, Thursday, 29 October

Rain. High 79°, low 73°.

Pressure29.83 inHg

Wind25.4 mph NE

Humidity80%

Visibility—

Dew point72°

Fri, 3075° / 73°

0.04

75 °

Waipahu, Friday, 30 October

Light rain. High 75°, low 73°.

Pressure29.83 inHg

Wind21 mph NE

Humidity82%

Visibility—

Dew point68°

Sat, 3178° / 74°

0.28

78 °

Waipahu, Saturday, 31 October

Rain. High 78°, low 74°.

Pressure29.85 inHg

Wind16.8 mph S

Humidity76%

Visibility—

Dew point70°

Sun, 0178° / 74°

0.78

78 °

Waipahu, Sunday, 1 November

Rain. High 78°, low 74°.

Pressure29.85 inHg

Wind18 mph W

Humidity84%

Visibility—

Dew point71°

Mon, 0276° / 74°

76 °

Waipahu, Monday, 2 November

Light rain. High 76°, low 74°.

Pressure30.00 inHg

Wind14.7 mph N

Humidity69%

Visibility—

Dew point64°

Tue, 0376° / 73°

0.02

76 °

Waipahu, Tuesday, 3 November

Light rain. High 76°, low 73°.

Pressure30.09 inHg

Wind18.1 mph NE

Humidity66%

Visibility—

Dew point63°

Wed, 0477° / 73°

77 °

Waipahu, Wednesday, 4 November

Light rain. High 77°, low 73°.

Pressure30.09 inHg

Wind18.1 mph NE

Humidity64%

Visibility—

Dew point63°

Thu, 0579° / 74°

0.02

79 °

Waipahu, Thursday, 5 November

Light rain. High 79°, low 74°.

Pressure30.06 inHg

Wind12.7 mph NE

Humidity63%

Visibility—

Dew point64°

Fri, 0678° / 74°

0.03

78 °

Waipahu, Friday, 6 November

Light rain. High 78°, low 74°.

Pressure30.06 inHg

Wind9.8 mph NE

Humidity59%

Visibility—

Dew point62°

From day 17 onward the outlook is built from 60-year climate statistics

Sat, 0782° / 75°

0.05

82 °

Waipahu, Saturday, 7 November

Climate normal for this date — 60-year average.

Average high82°

Average low75°

Average precipitation0.05 in

Chance of precipitation30%

Record high87° (2025)

Record low71° (2017)

Sun, 0882° / 75°

0.04

82 °

Waipahu, Sunday, 8 November

Climate normal for this date — 60-year average.

Average high82°

Average low75°

Average precipitation0.04 in

Chance of precipitation27%

Record high86° (2020)

Record low71° (2025)

Mon, 0981° / 74°

0.03

81 °

Waipahu, Monday, 9 November

Climate normal for this date — 60-year average.

Average high81°

Average low74°

Average precipitation0.03 in

Chance of precipitation28%

Record high87° (2023)

Record low68° (2019)

Tue, 1081° / 74°

0.02

81 °

Waipahu, Tuesday, 10 November

Climate normal for this date — 60-year average.

Average high81°

Average low74°

Average precipitation0.02 in

Chance of precipitation18%

Record high86° (2019)

Record low69° (2021)

Wed, 1181° / 74°

0.06

81 °

Waipahu, Wednesday, 11 November

Climate normal for this date — 60-year average.

Average high81°

Average low74°

Average precipitation0.06 in

Chance of precipitation17%

Record high86° (2019)

Record low70° (2018)

Thu, 1281° / 74°

0.06

81 °

Waipahu, Thursday, 12 November

Climate normal for this date — 60-year average.

Average high81°

Average low74°

Average precipitation0.06 in

Chance of precipitation22%

Record high85° (2023)

Record low71° (1965)

Fri, 1381° / 74°

0.06

81 °

Waipahu, Friday, 13 November

Climate normal for this date — 60-year average.

Average high81°

Average low74°

Average precipitation0.06 in

Chance of precipitation30%

Record high86° (2019)

Record low71° (2005)

Sat, 1480° / 74°

0.09

80 °

Waipahu, Saturday, 14 November

Climate normal for this date — 60-year average.

Average high80°

Average low74°

Average precipitation0.09 in

Chance of precipitation28%

Record high86° (2025)

Record low69° (2018)

Sun, 1581° / 74°

0.09

81 °

Waipahu, Sunday, 15 November

Climate normal for this date — 60-year average.

Average high81°

Average low74°

Average precipitation0.09 in

Chance of precipitation32%

Record high86° (2025)

Record low68° (2025)

Mon, 1680° / 74°

0.04

80 °

Waipahu, Monday, 16 November

Climate normal for this date — 60-year average.

Average high80°

Average low74°

Average precipitation0.04 in

Chance of precipitation25%

Record high85° (2025)

Record low69° (1974)

Tue, 1780° / 74°

0.06

80 °

Waipahu, Tuesday, 17 November

Climate normal for this date — 60-year average.

Average high80°

Average low74°

Average precipitation0.06 in

Chance of precipitation22%

Record high86° (2025)

Record low68° (1974)

Wed, 1880° / 73°

0.19

80 °

Waipahu, Wednesday, 18 November

Climate normal for this date — 60-year average.

Average high80°

Average low73°

Average precipitation0.19 in

Chance of precipitation23%

Record high86° (2025)

Record low67° (2017)

Thu, 1980° / 73°

0.14

80 °

Waipahu, Thursday, 19 November

Climate normal for this date — 60-year average.

Average high80°

Average low73°

Average precipitation0.14 in

Chance of precipitation30%

Record high86° (2024)

Record low69° (2017)

Fri, 2080° / 74°

0.09

80 °

Waipahu, Friday, 20 November

Climate normal for this date — 60-year average.

Average high80°

Average low74°

Average precipitation0.09 in

Chance of precipitation27%

Record high85° (2025)

Record low67° (2017)

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 Waipahu, 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 Waipahu, 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.