September 20, 2018 Weather Forecast
Photo: James Grenz
**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
A surface trough will be moving west across Oahu through early this afternoon and Kauai tonight. High pressure east of the trough will usher in moderate to locally strong trades that will last through part of the weekend. An area of low pressure is expected to develop northwest of the islands over the weekend, bringing in a period of southeast winds to the area. The southeast winds will last through at least the middle of next week. Rain chances may also increase over the western end of the island chain by the middle of next week.
Hilo
This Afternoon: Showers likely. Mostly cloudy, with a high near 87. East southeast wind around 8 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Tonight: Showers likely, mainly before midnight. Mostly cloudy, with a low around 69. Southeast wind 3 to 5 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Friday: Scattered showers. Partly sunny, with a high near 87. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Kona
This Afternoon: Scattered showers. Partly sunny, with a high near 84. West wind around 7 mph. Chance of precipitation is 30%. New precipitation amounts between a tenth and quarter of an inch possible.
Tonight: Isolated showers before midnight. Partly cloudy, with a low around 69. East wind around 5 mph becoming calm after midnight. Chance of precipitation is 20%.
Friday: Isolated showers after noon. Mostly sunny, with a high near 84. Light west wind. Chance of precipitation is 20%.
Waimea
This Afternoon: Showers likely and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Mostly cloudy, with a high near 80. North northeast wind around 6 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Tonight: Scattered showers. Mostly cloudy, with a low around 60. North northeast wind around 6 mph. Chance of precipitation is 50%. New precipitation amounts between a quarter and half of an inch possible.
Friday: Scattered showers. Partly sunny, with a high near 80. North northeast wind 8 to 10 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Kohala
This Afternoon: Showers likely and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Mostly cloudy, with a high near 77. East wind around 11 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight: Showers likely, mainly before midnight. Mostly cloudy, with a low around 58. Breezy, with an east wind 13 to 15 mph, with gusts as high as 21 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Friday: Scattered showers. Partly sunny, with a high near 77. Breezy, with an east wind 15 to 17 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.
South Point
This Afternoon: Scattered showers. Mostly sunny, with a high near 85. Windy, with an east wind around 24 mph, with gusts as high as 31 mph. Chance of precipitation is 30%.
Tonight: Isolated showers before midnight. Partly cloudy, with a low around 77. Windy, with an east wind around 25 mph, with gusts as high as 32 mph. Chance of precipitation is 20%.
Friday: Isolated showers. Mostly sunny, with a high near 85. Windy, with an east wind around 24 mph, with gusts as high as 31 mph. Chance of precipitation is 20%.
Puna
This Afternoon: Showers likely. Mostly cloudy, with a high near 85. East wind around 7 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 68. East northeast wind around 5 mph becoming calm after midnight. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.
Friday: Scattered showers. Partly sunny, with a high near 85. Light and variable wind becoming northeast around 5 mph in the afternoon. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.
Waikoloa
This Afternoon: A 20 percent chance of showers and thunderstorms. Some of the storms could produce heavy rainfall. Mostly sunny, with a high near 86. West northwest wind around 8 mph.
Tonight: Mostly clear, with a low around 68. Light east southeast wind.
Friday: Sunny, with a high near 86. East wind around 5 mph becoming northwest in the afternoon.
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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