September 12, 2018 Weather Forecast

Photo: James Grenz

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.**

Looking Ahead

Tropical Storm Olivia, near Lanai this morning, will pass south of Oahu and Kauai through this evening, then move away to the west. A low aloft north of the islands will move southwest, passing northwest of Kauai on Thursday. Instability from this low combined with moisture from Olivia will keep the weather wet through at least early Friday. A surface high will build far northeast of the state over the weekend and drier air will spread west across the islands.

Hilo

This Afternoon: Showers likely and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Mostly cloudy, with a high near 86. Light east wind becoming southeast 6 to 11 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Tonight: Frequent showers. The rain could be heavy at times. Low around 70. East southeast wind 5 to 10 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

Thursday: Frequent showers. The rain could be heavy at times. High near 87. East southeast wind 5 to 8 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

Kona

This Afternoon: Scattered showers and thunderstorms. Some of the storms could produce heavy rainfall. Partly sunny, with a high near 86. South southeast wind 6 to 11 mph becoming north northwest. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Tonight: Mostly cloudy, with a low around 72. North northwest wind 6 to 11 mph becoming light and variable.

Thursday: Scattered showers after noon. The rain could be heavy at times. Mostly sunny, with a high near 87. West wind 5 to 9 mph. Chance of precipitation is 30%.

Waimea

This Afternoon: Showers likely and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Mostly cloudy, with a high near 84. North northeast wind 5 to 7 mph becoming west. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Tonight: Showers likely. The rain could be heavy at times. Mostly cloudy, with a low around 60. West wind 6 to 8 mph becoming east southeast after midnight. Chance of precipitation is 70%. New precipitation amounts between a half and three quarters of an inch possible.

Thursday: Showers likely, mainly after noon. The rain could be heavy at times. Mostly cloudy, with a high near 82. Northeast wind 7 to 11 mph. Chance of precipitation is 60%. New precipitation amounts between 1 and 2 inches possible.

Kohala

This Afternoon: Frequent showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. High near 71. Light and variable wind becoming northwest 5 to 7 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Tonight: Frequent showers. The rain could be heavy at times. Low around 55. Light and variable wind becoming east southeast 6 to 11 mph after midnight. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

Thursday: Frequent showers. The rain could be heavy at times. High near 69. Breezy, with an east wind 10 to 17 mph, with gusts as high as 24 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

South Point

This Afternoon: Showers likely. Mostly cloudy, with a high near 87. Breezy, with a southeast wind 8 to 17 mph, with gusts as high as 22 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

Tonight: Scattered showers, with thunderstorms also possible after midnight. Mostly cloudy, with a low around 79. Breezy, with an east wind 17 to 21 mph, with gusts as high as 26 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Thursday: Showers likely, mainly after noon. Mostly cloudy, with a high near 86. Windy, with an east wind around 24 mph, with gusts as high as 31 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

Puna

This Afternoon: Showers likely and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Mostly cloudy, with a high near 86. Southeast wind around 8 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Tonight: Frequent showers. The rain could be heavy at times. Low around 68. Southeast wind 5 to 8 mph becoming light and variable. Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.

Thursday: Frequent showers. The rain could be heavy at times. High near 86. Northeast wind around 5 mph. Chance of precipitation is 90%. New precipitation amounts between 1 and 2 inches possible.

Waikoloa

This Afternoon: A 20 percent chance of showers and thunderstorms. Some of the storms could produce heavy rainfall. Partly sunny, with a high near 86. West northwest wind around 8 mph.

Tonight: Mostly cloudy, with a low around 70. North northwest wind 5 to 8 mph becoming light and variable after midnight.

Thursday: Isolated showers after noon. The rain could be heavy at times. Partly sunny, with a high near 88. North northeast wind around 5 mph. 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