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October 21, 2018 Weather Forecast

October 21, 2018, 1:45 PM HST
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Photo: James Grenz

High Surf Advisory issued October 21 at 3:39AM HST until October 22 at 6:00PM HST by NWS

Our weather team will bring you any urgent weather alerts or updates as they occur. Check our breaking news section for the latest.

**Click directly on the images below to make them larger. Charts include: Hawaii Island high/low forecasted temperatures, projected winds, projected localized weather conditions and expected wave heights.**

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Looking Ahead

An upper trough over the Big Island will continue moving slowly eastward today. Drier weather will spread across the entire state today and tonight as trade winds increase slightly. Trade showers will favor windward and mountain areas, and will occur mostly during overnight and early morning hours. A wetter trade wind pattern may develop by midweek as deeper tropical moisture moves into the state from the southeast.

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Hilo

ARTICLE CONTINUES BELOW AD

This Afternoon: Scattered showers. Partly sunny, with a high near 83. North northeast wind 3 to 7 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

Tonight: Scattered showers. Mostly cloudy, with a low around 70. Northwest wind 3 to 5 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

Monday: Showers likely, mainly before noon. Partly sunny, with a high near 83. Light and variable wind becoming north northeast 5 to 8 mph in the afternoon. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

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Kona

This Afternoon: Scattered showers. Partly sunny, with a high near 81. West southwest wind around 6 mph becoming calm. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

Tonight: Isolated showers before midnight. Partly cloudy, with a low around 65. Light and variable wind. Chance of precipitation is 20%.

Monday: Scattered showers after noon. Mostly sunny, with a high near 81. Calm wind becoming west southwest 5 to 7 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

Waimea

This Afternoon: Scattered showers. Mostly cloudy, with a high near 78. Breezy, with a northeast wind around 16 mph, with gusts as high as 22 mph. Chance of precipitation is 50%. New precipitation amounts between a tenth and quarter of an inch possible.

Tonight: Scattered showers. Mostly cloudy, with a low around 57. Breezy, with an east northeast wind 14 to 17 mph, with gusts as high as 23 mph. Chance of precipitation is 40%. New precipitation amounts between a tenth and quarter of an inch possible.

Monday: Scattered showers, mainly before noon. Partly sunny, with a high near 78. Breezy, with a northeast wind 14 to 18 mph, with gusts as high as 25 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

Kohala

This Afternoon: Showers likely. Mostly cloudy, with a high near 71. Breezy, with an east wind 17 to 21 mph, with gusts as high as 29 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

Tonight: Showers likely, mainly before midnight. Mostly cloudy, with a low around 52. Windy, with an east wind 20 to 24 mph, with gusts as high as 34 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

Monday: Showers likely. Mostly cloudy, with a high near 71. Breezy, with an east northeast wind 17 to 20 mph, with gusts as high as 28 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

South Point

This Afternoon: Scattered showers. Partly sunny, with a high near 85. Breezy, with an east northeast wind around 18 mph, with gusts as high as 24 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

Tonight: Scattered showers. Mostly cloudy, with a low around 74. Breezy, with an east northeast wind 15 to 21 mph, with gusts as high as 26 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

Monday: Isolated showers after noon. Mostly sunny, with a high near 84. Breezy, with an east wind 15 to 20 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.

Puna

This Afternoon: Showers likely. Mostly cloudy, with a high near 80. North northeast wind 8 to 10 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

Tonight: Showers likely. Mostly cloudy, with a low around 67. North northwest wind around 8 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

Monday: Showers likely, mainly before noon. Mostly cloudy, with a high near 80. North northeast wind 8 to 13 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

Waikoloa

This Afternoon: Isolated showers. Partly sunny, with a high near 83. Breezy, with a northeast wind 13 to 15 mph, with gusts as high as 21 mph. Chance of precipitation is 20%.

Tonight: Mostly clear, with a low around 66. Breezy, with an east wind 13 to 16 mph, with gusts as high as 23 mph.

Monday: Sunny, with a high near 83. Breezy, with a northeast wind 8 to 18 mph, with gusts as high as 25 mph.

Image: NOAA

Image: NOAA

Image: NOAA

Image: NOAA

Image: NOAA

Image: NOAA

Image: NOAA

Image: NOAA

Data Courtesy of NOAA.gov

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