National Weather Service Forecast for: Wahiawa HI
Issued by: National Weather Service Honolulu, HI
Updated: 7:09 am HST Mar 19, 2026
 
Today

Today: Showers, mainly after 2pm. High near 78. South southeast wind 5 to 10 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Scattered
Showers then
Showers
 Tonight

Tonight: Showers, with thunderstorms also possible after 8pm. Some of the storms could produce heavy rainfall. Low around 68. South southeast wind around 9 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.
Heavy Rain

 Friday

Friday: Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. High near 76. South wind around 10 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Heavy Rain

 Friday
Night
Friday Night: Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Low around 68. South wind 7 to 10 mph. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.
Heavy Rain

 Saturday

Saturday: Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. High near 74. Light and variable wind becoming south southwest 6 to 11 mph in the afternoon. Chance of precipitation is 100%. New rainfall amounts between 2 and 3 inches possible.
Heavy Rain

 Saturday
Night
Saturday Night: Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Low around 66. South southwest wind around 11 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.
Heavy Rain
then Showers
Likely
 Sunday

Sunday: Showers likely and possibly a thunderstorm. Cloudy, with a high near 75. Southwest wind 5 to 10 mph becoming north northeast in the afternoon. Chance of precipitation is 60%.
Showers
Likely
 Sunday
Night
Sunday Night: Scattered showers. Cloudy, with a low around 64. North northeast wind 5 to 11 mph. Chance of precipitation is 50%.
Scattered
Showers
 Monday

Monday: Scattered showers. Mostly cloudy, with a high near 73. Breezy, with a northeast wind 11 to 15 mph, with gusts as high as 21 mph. Chance of precipitation is 50%.
Scattered
Showers and
Breezy
Hi 78 °F Lo 68 °F Hi 76 °F Lo 68 °F Hi 74 °F Lo 66 °F Hi 75 °F Lo 64 °F Hi 73 °F

Flood Watch
 

Today
 
 Showers, mainly after 2pm. High near 78. South southeast wind 5 to 10 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Tonight
 
 Showers, with thunderstorms also possible after 8pm. Some of the storms could produce heavy rainfall. Low around 68. South southeast wind around 9 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.
Friday
 
 Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. High near 76. South wind around 10 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Friday Night
 
 Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Low around 68. South wind 7 to 10 mph. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.
Saturday
 
 Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. High near 74. Light and variable wind becoming south southwest 6 to 11 mph in the afternoon. Chance of precipitation is 100%. New rainfall amounts between 2 and 3 inches possible.
Saturday Night
 
 Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Low around 66. South southwest wind around 11 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.
Sunday
 
 Showers likely and possibly a thunderstorm. Cloudy, with a high near 75. Southwest wind 5 to 10 mph becoming north northeast in the afternoon. Chance of precipitation is 60%.
Sunday Night
 
 Scattered showers. Cloudy, with a low around 64. North northeast wind 5 to 11 mph. Chance of precipitation is 50%.
Monday
 
 Scattered showers. Mostly cloudy, with a high near 73. Breezy, with a northeast wind 11 to 15 mph, with gusts as high as 21 mph. Chance of precipitation is 50%.
Monday Night
 
 Scattered showers, mainly before 8pm. Mostly cloudy, with a low around 62. Breezy, with a northeast wind 14 to 16 mph, with gusts as high as 22 mph. Chance of precipitation is 30%.
Tuesday
 
 Scattered showers. Partly sunny, with a high near 74. Breezy, with an east northeast wind 16 to 20 mph, with gusts as high as 28 mph. Chance of precipitation is 30%.
Tuesday Night
 
 Scattered showers. Mostly cloudy, with a low around 63. Breezy, with an east northeast wind 14 to 17 mph, with gusts as high as 24 mph. Chance of precipitation is 30%.
Wednesday
 
 Scattered showers. Partly sunny, with a high near 76. Breezy, with an east northeast wind 14 to 17 mph, with gusts as high as 24 mph. Chance of precipitation is 30%.

 

Forecast from NOAA-NWS for Wahiawa HI.