Official National Weather Service forecasts for Kauaʻi and Niʻihau — Lihue and the east side up Kūhiō Highway through Kapaʻa to Hanalei and the end of the road at Hāʻena, the south shore at Koloa and Poʻipū, and west past Waimea Canyon to Kekaha and the Nā Pali cliffs.