Weather

September 18, 2018 Weather Forecast

September 18, 2018, 7:00 AM HST
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Photo: Asa Ellison

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

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Looking Ahead

Dry and stable conditions with moderate to breezy trades will hold today. This will limit shower coverage with the best chances remaining over windward and mauka areas through the early morning hours. Trades are expected to trend down and become light over portions of the state tonight through Thursday as a weak trough of low pressure approaches and moves through the region. Warm and muggy conditions will be likely Wednesday due to light winds and increasing moisture, which should translate to increasing rainfall chances by Wednesday night. A drying trend with breezy trades returning are expected late Thursday into the weekend.

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West Side

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Today: Isolated showers. Mostly sunny, with a high near 89. Calm wind becoming east northeast 5 to 9 mph in the afternoon. Chance of precipitation is 20%.

Tonight: Isolated showers. Partly cloudy, with a low around 68. East northeast wind 5 to 9 mph becoming calm in the evening. Chance of precipitation is 20%.

Wednesday: A 20 percent chance of showers. Mostly sunny, with a high near 88. Heat index values as high as 95. Calm wind becoming west southwest 5 to 8 mph in the morning.

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South Side

Today: Increasing clouds, with a high near 89. Calm wind becoming west southwest 5 to 7 mph in the morning.

Tonight: Partly cloudy, with a low around 65. East northeast wind around 6 mph becoming calm in the evening.

Wednesday: A 30 percent chance of showers after noon. Mostly sunny, with a high near 88. Calm wind becoming west 5 to 7 mph in the morning. New precipitation amounts of less than a tenth of an inch possible.

North Shore

Today: Scattered showers, mainly before noon. Mostly sunny, with a high near 89. Breezy, with an east northeast wind 10 to 16 mph, with gusts as high as 22 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

Tonight: Scattered showers, mainly after midnight. Partly cloudy, with a low around 68. East wind 5 to 10 mph becoming light and variable in the evening. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

Wednesday: A 30 percent chance of showers before noon. Partly sunny, with a high near 88. Heat index values as high as 95. Breezy, with a light and variable wind becoming east 13 to 18 mph in the morning. Winds could gust as high as 26 mph.

Central Maui

Today: Scattered showers, mainly before noon. Mostly sunny, with a high near 89. Breezy, with a northeast wind 6 to 16 mph, with gusts as high as 22 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

Tonight: Isolated showers. Partly cloudy, with a low around 66. East northeast wind 5 to 8 mph becoming calm in the evening. Chance of precipitation is 20%.

Wednesday: A 20 percent chance of showers. Partly sunny, with a high near 88. Heat index values as high as 95. Light and variable wind becoming east northeast 5 to 10 mph in the morning.

Upcountry

Today: Sunny, with a high near 77. Calm wind becoming west 5 to 7 mph.

Tonight: Partly cloudy, with a low around 53. East wind around 5 mph becoming calm after midnight.

Wednesday: A 40 percent chance of showers after 1pm. Partly sunny, with a high near 78. Calm wind becoming west northwest 5 to 8 mph. New precipitation amounts of less than a tenth of an inch possible.

East Maui

Today: Showers likely, mainly before noon. Partly sunny, with a high near 86. Calm wind becoming northeast 5 to 8 mph in the morning. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

Tonight: Scattered showers. Mostly cloudy, with a low around 64. East wind 5 to 8 mph becoming south in the evening. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

Wednesday: A 50 percent chance of showers. Partly sunny, with a high near 87. East southeast wind 6 to 13 mph. New precipitation amounts of less than a tenth of an inch possible.

Lanai City

Today: Isolated showers after noon. Mostly sunny, with a high near 78. Northeast wind 7 to 14 mph, with gusts as high as 18 mph. Chance of precipitation is 20%.

Tonight: Isolated showers before midnight. Partly cloudy, with a low around 66. East northeast wind 5 to 7 mph becoming calm in the evening. Chance of precipitation is 20%.

Wednesday: A 20 percent chance of showers after noon. Partly sunny, with a high near 78. Calm wind becoming north around 5 mph.

Kaunakakai

Today: Isolated showers before noon. Mostly sunny, with a high near 87. East southeast wind 6 to 13 mph. Chance of precipitation is 20%.

Tonight: Isolated showers after midnight. Mostly clear, with a low around 73. East wind 5 to 9 mph becoming calm in the evening. Chance of precipitation is 20%.

Wednesday: A 20 percent chance of showers. Mostly sunny, with a high near 87. Calm wind.

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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