| NWS Forecast for: Big Island Summit Issued by: National Weather Service Honolulu, HI Last Update: 451 AM HST Thu Sep 24 2026 | |
Today: Windy. Scattered showers and isolated thunderstorms in the morning, then showers and isolated thunderstorms in the afternoon. Locally heavy rainfall possible in the afternoon. Highs around 56 at the visitor information station to around 46 near the summits. East winds 10 to 25 mph increasing to 10 to 35 mph in the afternoon. Chance of rain near 100 percent. Tonight: tropical storm conditions possible. Cloudy with scattered showers and isolated thunderstorms. Locally heavy rainfall possible. Lows around 47 at the visitor information station to around 40 near the summits. East winds 10 to 45 mph. Chance of rain 50 percent. Friday: tropical storm conditions possible with hurricane conditions also possible. Mostly cloudy. Numerous showers and isolated thunderstorms in the morning, then scattered showers and isolated thunderstorms in the afternoon. Locally heavy rainfall possible. Highs around 62 at the visitor information station to around 51 near the summits. East winds 10 to 50 mph. Gusts up to 70 mph in the afternoon. Chance of rain 70 percent. Friday Night: hurricane conditions possible. Mostly cloudy with occasional showers and isolated thunderstorms. Locally heavy rainfall possible. Lows 40 to 59. East winds 25 to 60 mph with gusts to 85 mph increasing to 30 to 70 mph with gusts to 100 mph after midnight. Chance of rain 90 percent. Saturday: hurricane conditions possible. Mostly cloudy with occasional showers and isolated thunderstorms. Locally heavy rainfall possible. Highs 45 to 73. East winds 15 to 55 mph with gusts to 85 mph. Chance of rain 90 percent. Saturday Night: tropical storm conditions possible. Mostly cloudy with scattered showers and isolated thunderstorms. Locally heavy rainfall possible. Lows 41 to 57. East winds 10 to 45 mph. Gusts up to 70 mph in the evening. Chance of rain 50 percent. Sunday: Windy. Mostly cloudy with scattered showers and isolated thunderstorms. Locally heavy rainfall possible. Highs 46 to 72. East winds 10 to 35 mph. Chance of rain 50 percent. Sunday Night: Breezy. Mostly cloudy with isolated showers in the evening, then partly cloudy after midnight. Lows 40 to 55. East winds 10 to 25 mph. Chance of rain 20 percent. Monday: Breezy. Partly sunny in the morning, then mostly sunny with isolated showers in the afternoon. Highs 50 to 71. East winds 10 to 20 mph decreasing to up to 15 mph in the afternoon. Chance of rain 20 percent. Monday Night: Mostly clear. Lows 39 to 55. Light winds. Tuesday: Sunny. Highs 45 to 71. Light winds. Tuesday Night: Mostly clear. Lows 40 to 54. Northwest winds up to 10 mph. Wednesday: Sunny. Highs 48 to 70. North winds up to 10 mph. | |
| Zone Forecast: Big Island Summit | |
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