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September 20, 2018 Weather Forecast

September 20, 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

A weak surface trough just north of Kauai will move slowly westward through tonight, which will keep winds light across the state. This will allow local afternoon sea breezes and nighttime land breezes to develop. Showers will continue over windward Maui and the Big Island this morning. Clouds and showers are expected to develop over interior and mauka sections of the state this afternoon as the sea breezes become established. Trade winds will return by Friday, and will persist through this weekend. An area of low pressure is expected to develop northwest of the islands early next week, which will produce light southeasterly winds. Rain chances may also increase over the western end of the island chain by the middle of next week.

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West Side

ARTICLE CONTINUES BELOW AD

Today: Scattered showers after noon. Mostly sunny, with a high near 89. Heat index values as high as 97. Light and variable wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

Tonight: Mostly clear, with a low around 73. Calm wind.

Friday: Sunny, with a high near 88. Light west southwest wind.

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South Side

Today: Scattered showers after noon. Increasing clouds, with a high near 88. Heat index values as high as 95. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 30%.

Tonight: Mostly clear, with a low around 70. Light and variable wind.

Friday: Sunny, with a high near 87. Calm wind becoming west northwest around 5 mph in the afternoon.

North Shore

Today: Scattered showers after 1pm. Mostly sunny, with a high near 87. Breezy, with an east wind 9 to 16 mph, with gusts as high as 22 mph. Chance of precipitation is 30%.

Tonight: Scattered showers before 7pm. Mostly clear, with a low around 71. Breezy, with an east wind 11 to 16 mph, with gusts as high as 22 mph. Chance of precipitation is 30%.

Friday: Sunny, with a high near 86. Breezy, with an east wind 10 to 16 mph, with gusts as high as 22 mph.

Central Maui

Today: Scattered showers after noon. Mostly sunny, with a high near 90. Heat index values as high as 97. Northeast wind 9 to 13 mph. Chance of precipitation is 30%.

Tonight: Scattered showers. Mostly cloudy, with a low around 71. Northeast wind around 11 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

Friday: Isolated showers. Mostly sunny, with a high near 89. Northeast wind 11 to 14 mph, with gusts as high as 18 mph. Chance of precipitation is 20%.

Upcountry

Today: Scattered showers after 1pm. Sunny, with a high near 77. Light and variable wind. Chance of precipitation is 30%.

Tonight: Scattered showers before 7pm. Mostly clear, with a low around 59. Light and variable wind. Chance of precipitation is 30%.

Friday: Sunny, with a high near 76. Light and variable wind.

East Maui

Today: Showers likely. Mostly cloudy, with a high near 82. Breezy, with an east southeast wind 14 to 17 mph, with gusts as high as 24 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.

Tonight: Showers likely, mainly before midnight. Mostly cloudy, with a low around 70. East southeast wind around 14 mph, with gusts as high as 18 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

Friday: Scattered showers. Partly sunny, with a high near 81. East southeast wind 11 to 13 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

Lanai City

Today: Scattered showers after noon. Sunny, with a high near 83. Calm wind becoming west northwest around 5 mph in the afternoon. Chance of precipitation is 30%.

Tonight: Mostly clear, with a low around 65. Calm wind.

Friday: Isolated showers after noon. Sunny, with a high near 82. Calm wind. Chance of precipitation is 20%.

Kaunakakai

Today: Scattered showers after noon. Sunny, with a high near 87. Heat index values as high as 96. East wind 6 to 13 mph. Chance of precipitation is 30%.

Tonight: Mostly clear, with a low around 69. East wind 8 to 13 mph.

Friday: Sunny, with a high near 86. Breezy, with an east wind 9 to 15 mph, with gusts as high as 21 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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