Weather forecast for tomorrowKeaau, HI

Weather forecast for tomorrow

Sunday Oct 18, 2026

  • 79°F
  • 70°F
Showers
Showers
  • Precip. probability: 66%
  • Precipitation: 0.55"
  • Wind: 11mphN 0°
  • Humidity: 81%
  • UV index: 8
  • Sunrise: 6:15 am HST
  • Sunset: 5:54 pm HST
  • ▼
Tomorrow, showers are expected to spread throughout the day, with the heaviest rain expected in the morning.
With a high probability, moderate precipitation is anticipated. Temperature shifts will be modest, ranging from a peak of a moderately hot 78.8°F to a low of an agreeable 69.8°F.
Tomorrow's highest temperature 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.

Hourly overview

Hourly temperatures

Warmest hour: 12 pm 82°C.
Coldest period: 12 am - 6 am 72°C.

Chance of precipitation

Highest chance: 62%.

Hourly weather forecast

  • 12 am
  • 70°F
  • Feels like:
    72°F
Showers
Showers
  • Precip. probability: 58%
  • Precipitation: 0.04"
  • Wind: 6mphW 273°
  • Humidity: 90%
  • Pressure: 30.03"Hg
  • Visibility: 7mi
  • UV index: 0
  • ▼
  • 2 am
  • 70°F
  • Feels like:
    72°F
Showers
Showers
  • Precip. probability: 64%
  • Precipitation: 0.08"
  • Wind: 5mphW 263°
  • Humidity: 87%
  • Pressure: 30"Hg
  • Visibility: 5mi
  • UV index: 0
  • ▼
  • 4 am
  • 70°F
  • Feels like:
    72°F
Showers
Showers
  • Precip. probability: 51%
  • Precipitation: 0.04"
  • Wind: 6mphW 269°
  • Humidity: 90%
  • Pressure: 30"Hg
  • Visibility: 6mi
  • UV index: 0
  • ▼
  • 6 am
  • 70°F
  • Feels like:
    72°F
Showers
Showers
  • Precip. probability: 50%
  • Precipitation: 0.04"
  • Wind: 7mphW 274°
  • Humidity: 90%
  • Pressure: 30.03"Hg
  • Visibility: 6mi
  • UV index: 0
  • ▼
Sunrise: 6:15 am
  • 8 am
  • 72°F
  • Feels like:
    75°F
Showers
Showers
  • Precip. probability: 41%
  • Precipitation: 0.04"
  • Wind: 7mphWNW 303°
  • Humidity: 86%
  • Pressure: 30.06"Hg
  • Visibility: 7mi
  • UV index: 1
  • ▼
  • 10 am
  • 77°F
  • Feels like:
    81°F
Showers
Showers
  • Precip. probability: 40%
  • Precipitation: 0.04"
  • Wind: 8mphN 352°
  • Humidity: 78%
  • Pressure: 30.06"Hg
  • Visibility: 7mi
  • UV index: 5
  • ▼
  • 12 pm
  • 79°F
  • Feels like:
    82°F
Showers
Showers
  • Precip. probability: 47%
  • Precipitation: 0.04"
  • Wind: 9mphNNE 18°
  • Humidity: 76%
  • Pressure: 30.03"Hg
  • Visibility: 7mi
  • UV index: 8
  • ▼
  • 2 pm
  • 77°F
  • Feels like:
    82°F
Showers
Showers
  • Precip. probability: 49%
  • Precipitation: 0.04"
  • Wind: 10mphNNE 25°
  • Humidity: 78%
  • Pressure: 30"Hg
  • Visibility: 6mi
  • UV index: 5
  • ▼
  • 4 pm
  • 77°F
  • Feels like:
    81°F
Showers
Showers
  • Precip. probability: 67%
  • Precipitation: 0.04"
  • Wind: 9mphNNE 19°
  • Humidity: 80%
  • Pressure: 30"Hg
  • Visibility: 4mi
  • UV index: 1
  • ▼
Sunset: 5:54 pm
  • 6 pm
  • 73°F
  • Feels like:
    77°F
Showers
Showers
  • Precip. probability: 62%
  • Precipitation: 0.04"
  • Wind: 6mphN 354°
  • Humidity: 86%
  • Pressure: 30.03"Hg
  • Visibility: 5mi
  • UV index: 0
  • ▼
  • 8 pm
  • 73°F
  • Feels like:
    75°F
Showers
Showers
  • Precip. probability: 56%
  • Precipitation: 0.04"
  • Wind: 7mphNW 306°
  • Humidity: 89%
  • Pressure: 30.06"Hg
  • Visibility: 4mi
  • UV index: 0
  • ▼
  • 10 pm
  • 72°F
  • Feels like:
    73°F
Showers
Showers
  • Precip. probability: 46%
  • Precipitation: 0.04"
  • Wind: 6mphWNW 286°
  • Humidity: 89%
  • Pressure: 30.06"Hg
  • Visibility: 4mi
  • UV index: 0
  • ▼
Tomorrow, on Sunday, a combination of rain-filled and gloomy weather is predicted.
Rain is expected throughout the entire day, with precipitation varying from a minimal 0.04" to a maximum of 0.08". With light precipitation of 0.08", most rainfall is expected at 2 am.
The temperature will vary between a minimum of 69.8°F and a maximum of 78.8°F. The warmest part of the day will be at noon and 1 pm.
The forecasted high will be slightly warmer than the typical October maximum of 74.7°F. The temperature low is forecasted to be also consistent with the usual October value of 69.6°F.
Updated: Oct 17, 2026 @ 14:59:51 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

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

Moderate precipitation of 0.55" 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.
Tomorrow, the maximum temperature will be slightly warmer than the average highest temperature in October. The lowest temperature tomorrow 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.