Weather forecast for 10 daysKeaau, HI

Weather forecast for the weekend

Saturday Oct 17, 2026

  • 81°F
  • 68°F
PM Showers
PM Showers
  • Precip. probability: 41%
  • Precipitation: 0.04"
  • Wind: 11mphN 0°
  • Humidity: 76%
  • UV index: 10
  • Sunrise: 6:15 am HST
  • Sunset: 5:55 pm HST
  • ▼
Today, in Keaau, patchy afternoon showers could develop as the clouds thicken.
Minimal precipitation is forecasted. The temperature scale will run from a maximum of a moderately hot 80.6°F to a minimum of a delightful 68°F.
The maximum heat index, which modifies the air temperature to account for humidity, is appraised at 84.2°F.
Expected temperatures are trending relatively higher than October's climate norm of 74.7°F.
Sunrise will be at 6:15 am and sunset at 5:55 pm; the daylight will last for 11h and 40min.

Sunday Oct 18, 2026

  • 79°F
  • 70°F
Showers
Showers
  • Precip. probability: 66%
  • Precipitation: 0.31"
  • Wind: 11mphN 0°
  • Humidity: 80%
  • UV index: 8
  • Sunrise: 6:15 am HST
  • Sunset: 5:54 pm HST
  • ▼
On Sunday, in Keaau, expect light rain showers throughout the day, with a break in the rain later in the day.
The likelihood of rainfall for tomorrow is high. However, precipitation will be light. Temperature is anticipated to reach a high of a moderately hot 78.8°F during the day, slightly dropping to a low of a delightful 69.8°F at night.
Tomorrow, the expected high will be a few degrees higher than the average October maximum of 74.7°F.
Sunrise will be at 6:15 am and sunset at 5:54 pm; tomorrow's daylight will last for 11h and 39min.

10-day overview

Daily temperatures

Maximum temperature: 81°C.
Minimum temperature: 79°C.

Chance of precipitation

Highest chance: tomorrow 66%.

Long-term weather forecast

  • Saturday
  • Oct 17, 2026
  • 81°F
  • 68°F
PM Showers
PM Showers
  • Precip. probability: 41%
  • Precipitation: 0.04"
  • Wind: 11mphN 0°
  • Humidity: 76%
  • UV index: 10
  • Sunrise: 6:15 am HST
  • Sunset: 5:55 pm HST
  • ▼
  • Sunday
  • Oct 18, 2026
  • 79°F
  • 70°F
Showers
Showers
  • Precip. probability: 66%
  • Precipitation: 0.31"
  • Wind: 11mphN 0°
  • Humidity: 80%
  • UV index: 8
  • Sunrise: 6:15 am HST
  • Sunset: 5:54 pm HST
  • ▼
  • Monday
  • Oct 19, 2026
  • 81°F
  • 68°F
Showers
Showers
  • Precip. probability: 51%
  • Precipitation: 0.55"
  • Wind: 11mphN 9°
  • Humidity: 78%
  • UV index: 10
  • Sunrise: 6:16 am HST
  • Sunset: 5:53 pm HST
  • ▼
  • Tuesday
  • Oct 20, 2026
  • 79°F
  • 66°F
Showers
Showers
  • Precip. probability: 43%
  • Precipitation: 0.35"
  • Wind: 11mphN 9°
  • Humidity: 76%
  • UV index: 10
  • Sunrise: 6:16 am HST
  • Sunset: 5:53 pm HST
  • ▼
  • Wednesday
  • Oct 21, 2026
  • 79°F
  • 66°F
Few Showers
Few Showers
  • Precip. probability: 33%
  • Precipitation: 0.16"
  • Wind: 9mphNNE 13°
  • Humidity: 74%
  • UV index: 10
  • Sunrise: 6:16 am HST
  • Sunset: 5:52 pm HST
  • ▼
  • Thursday
  • Oct 22, 2026
  • 81°F
  • 68°F
Few Showers
Few Showers
  • Precip. probability: 34%
  • Precipitation: 0.04"
  • Wind: 9mphE 101°
  • Humidity: 75%
  • UV index: 9
  • Sunrise: 6:17 am HST
  • Sunset: 5:51 pm HST
  • ▼
  • Friday
  • Oct 23, 2026
  • 81°F
  • 70°F
Showers
Showers
  • Precip. probability: 50%
  • Precipitation: 0.08"
  • Wind: 9mphENE 72°
  • Humidity: 78%
  • UV index: 6
  • Sunrise: 6:17 am HST
  • Sunset: 5:51 pm HST
  • ▼
  • Saturday
  • Oct 24, 2026
  • 81°F
  • 70°F
Showers
Showers
  • Precip. probability: 44%
  • Precipitation: 0.31"
  • Wind: 9mphNNE 15°
  • Humidity: 79%
  • UV index: 6
  • Sunrise: 6:17 am HST
  • Sunset: 5:50 pm HST
  • ▼
  • Sunday
  • Oct 25, 2026
  • 79°F
  • 70°F
Showers
Showers
  • Precip. probability: 43%
  • Precipitation: 0.39"
  • Wind: 10mphNNE 28°
  • Humidity: 78%
  • UV index: 6
  • Sunrise: 6:18 am HST
  • Sunset: 5:49 pm HST
  • ▼
  • Monday
  • Oct 26, 2026
  • 79°F
  • 70°F
Showers
Showers
  • Precip. probability: 60%
  • Precipitation: 0.39"
  • Wind: 9mphENE 62°
  • Humidity: 79%
  • UV index: 6
  • Sunrise: 6:18 am HST
  • Sunset: 5:49 pm HST
  • ▼
The next ten days will bring a period where wet conditions are expected daily.
Rainfall is predicted day-to-day, with daily precipitation varying from a minimal 0.04" to a maximum of 0.55".
The maximum temperature will be very similar during the next few days. Highs will range from 78.8°F to 80.6°F, while the lowest nightly temperature differences will be also negligible, as the overnight low will fall between 66.2°F and 69.8°F.
With a maximum temperature of 80.6°F, Saturday, Monday, Thursday through next Saturday will be the warmest days; all other days, the highest temperature will be 78.8°F.
Updated: Oct 17, 2026 @ 12:54:25 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

Today, a few passing showers are expected later today.

Today, there is a low probability of minimal rainfall in Keaau.

Today, the highest temperature will be 80.6°F, while the lowest temperature will be 68°F. The maximum heat index, which modifies the air temperature to account for humidity, is computed to be 84.2°F.
Today, the maximum temperature will be moderately higher than the average highest temperature in October. Today, the lowest temperature will be in line with the average low temperature.

On Saturday, in Keaau, sunrise will be at 6:15 am and sunset at 5:55 pm (HST).

In Keaau, today, there will be 11h and 40min of daylight.

Tomorrow, showers will occur, with brief dry spells in between.

Light precipitation of 0.31" is forecasted. The possibility of rainfall is 66%.

Tomorrow, the highest temperature will be 78.8°F, while the lowest temperature will be 69.8°F.
The maximum temperature tomorrow will be moderately higher than the average highest temperature in October. Tomorrow, the lowest temperature will be in line with the average low temperature.

On Sunday, in Keaau, sunrise will be at 6:15 am and sunset at 5:54 pm (HST).

Tomorrow, the daylight will last for 11h and 39min.