October 18, 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

Gentle to locally moderate trade winds will persist through the next few days. Showers will remain focused across windward slopes, while instability near the Big Island will likely trigger leeward and interior showers and a few thunderstorms this afternoon. An upper level trough slowly passing overhead from west to east on Friday through Sunday will produce unstable conditions and spread the risk of thunderstorms to much of the island chain. Trade winds will rebuild on Sunday and early next week, though unstable conditions may linger over portions of the state.

Hilo

This Afternoon: Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 83. East northeast wind around 6 mph becoming south. 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. Cloudy, with a low around 69. South wind around 5 mph becoming west in the evening. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

Friday: Showers likely, with thunderstorms also possible after noon. Cloudy, with a high near 84. Northeast wind 5 to 7 mph becoming calm in the afternoon. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Kona

This Afternoon: Scattered showers and thunderstorms. Mostly cloudy, with a high near 82. Southwest wind 3 to 8 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Tonight: Scattered showers, mainly before midnight. Mostly cloudy, with a low around 68. Light and variable wind becoming north northeast around 6 mph in the evening. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

Friday: Scattered showers and thunderstorms after noon. Partly sunny, with a high near 82. West wind 5 to 9 mph becoming calm in the afternoon. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Waimea

This Afternoon: Scattered showers and thunderstorms. Mostly cloudy, with a high near 78. Northeast wind around 9 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Tonight: Showers likely. Mostly cloudy, with a low around 59. Northeast wind 5 to 8 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.

Friday: Showers likely, with thunderstorms also possible after noon. Mostly cloudy, with a high near 78. Northeast wind 5 to 7 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

Kohala

This Afternoon: Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 70. East southeast wind around 6 mph. 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. Mostly cloudy, with a low around 53. East wind 5 to 8 mph becoming calm after midnight. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

Friday: Showers likely, with thunderstorms also possible after noon. Mostly cloudy, with a high near 70. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

South Point

This Afternoon: Scattered showers and thunderstorms. Mostly cloudy, with a high near 83. Breezy, with an east wind 15 to 17 mph, with gusts as high as 22 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Tonight: Scattered showers. Mostly cloudy, with a low around 74. Breezy, with an east northeast wind 10 to 17 mph, with gusts as high as 22 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

Friday: Isolated showers, then scattered showers and thunderstorms after noon. Mostly cloudy, with a high near 83. Breezy, with an east wind 11 to 16 mph, with gusts as high as 20 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Puna

This Afternoon: Showers likely and possibly a thunderstorm. Cloudy, with a high near 80. North northeast wind 3 to 6 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Tonight: Showers likely. Cloudy, with a low around 66. West northwest wind 3 to 5 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.

Friday: Showers likely, with thunderstorms also possible after noon. Cloudy, with a high near 81. Calm wind becoming northeast around 6 mph in the afternoon. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

Waikoloa

This Afternoon: A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 84. North wind 5 to 7 mph becoming calm.

Tonight: Isolated showers before midnight. Partly cloudy, with a low around 68. Calm wind becoming east around 6 mph after midnight. Chance of precipitation is 20%.

Friday: A 20 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 84. Calm wind becoming west northwest 5 to 7 mph in the afternoon.

Image: NOAA

Image: NOAA

Image: NOAA

Image: NOAA

Image: NOAA

Image: NOAA

Image: NOAA

Image: NOAA

Data Courtesy of NOAA.gov