September 21, 2018 Weather Forecast

Photo: James Grenz

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**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.**

Looking Ahead

Moderate to breezy trade winds will build across the state today as a weak trough near Kauai lifts away. Clouds and showers will favor windward slopes of all islands. A few afternoon showers will flare up along leeward slopes of the Big Island and on Kauai, where deeper moisture and higher humidity will linger. Winds will shift out of the southeast and south on Sunday and Monday, bringing humid conditions and potentially wet weather across the western end of the state through the middle of next week.

Hilo

This Afternoon: Scattered showers. Partly sunny, with a high near 88. East wind 5 to 7 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

Tonight: Showers likely, mainly after midnight. Mostly cloudy, with a low around 72. Light and variable wind becoming west northwest around 6 mph after midnight. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

Saturday: Showers likely, mainly before noon. Partly sunny, with a high near 86. Calm wind becoming east northeast 5 to 7 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

Kona

This Afternoon: Isolated showers. Mostly cloudy, with a high near 85. West wind 6 to 9 mph becoming north northwest. Chance of precipitation is 20%.

Tonight: Isolated showers before midnight. Mostly cloudy, then gradually becoming mostly clear, with a low around 71. North northwest wind around 6 mph becoming light and variable in the evening. Chance of precipitation is 20%.

Saturday: Isolated showers after noon. Mostly sunny, with a high near 85. West southwest wind around 6 mph becoming calm in the afternoon. Chance of precipitation is 20%.

Waimea

This Afternoon: Scattered showers. Partly sunny, with a high near 81. Breezy, with a northeast wind 10 to 17 mph, with gusts as high as 24 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

Tonight: Scattered showers. Mostly cloudy, with a low around 62. Breezy, with a northeast wind 10 to 16 mph, with gusts as high as 22 mph. Chance of precipitation is 40%. New precipitation amounts between a tenth and quarter of an inch possible.

Saturday: Scattered showers. Partly sunny, with a high near 80. Northeast wind 10 to 14 mph, with gusts as high as 18 mph. Chance of precipitation is 40%. New precipitation amounts between a tenth and quarter of an inch possible.

Kohala

This Afternoon: Scattered showers. Partly sunny, with a high near 78. Breezy, with an east northeast wind 7 to 15 mph, with gusts as high as 21 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 61. Breezy, with an east northeast wind 9 to 16 mph, with gusts as high as 22 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

Saturday: Scattered showers. Partly sunny, with a high near 76. East northeast wind 8 to 13 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

South Point

This Afternoon: Isolated showers. Mostly sunny, with a high near 85. Windy, with an east wind 23 to 25 mph, with gusts as high as 32 mph. Chance of precipitation is 20%.

Tonight: Scattered showers, mainly after midnight. Partly cloudy, with a low around 78. Windy, with an east wind 18 to 23 mph, with gusts as high as 30 mph. Chance of precipitation is 30%.

Saturday: Scattered showers, mainly before noon. Mostly sunny, with a high near 85. Breezy, with an east wind 17 to 22 mph, with gusts as high as 28 mph. Chance of precipitation is 30%.

Puna

This Afternoon: Scattered showers. Partly sunny, with a high near 86. Northeast wind 6 to 9 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

Tonight: Showers likely, mainly after midnight. Mostly cloudy, with a low around 71. Northeast wind around 6 mph becoming light and variable. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

Saturday: Showers likely, mainly before noon. Partly sunny, with a high near 84. West northwest wind 5 to 8 mph becoming east northeast in the afternoon. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

Waikoloa

This Afternoon: Isolated showers. Cloudy, with a high near 87. North northwest wind 5 to 8 mph becoming calm. Chance of precipitation is 20%.

Tonight: Isolated showers before midnight. Mostly cloudy during the early evening, then gradual clearing, with a low around 70. Calm wind becoming southeast 5 to 7 mph in the evening. Chance of precipitation is 20%.

Saturday: Isolated showers after noon. Increasing clouds, with a high near 87. East northeast wind 5 to 9 mph becoming calm in the afternoon. Chance of precipitation is 20%.

Image: NOAA

Image: NOAA

Image: NOAA

Image: NOAA

Image: NOAA

Image: NOAA

Image: NOAA

Image: NOAA

Data Courtesy of NOAA.gov