Dangerous heat and humidity from the central U.S. to East Coast this weekend

Hot and very humid conditions will push the heat index to well over 100 degrees across a large portion of the central and eastern U.S. Excessive Heat Warnings and Heat Advisories are in effect for much of the Plains, Miss. Valley, Midwest, Ohio Valley, Mid-Atlantic and southern states. Be very cautious if you must do outdoor activities in these areas during the afternoon and evening this weekend. Read More >

Current conditions at

Hilo, Hilo International Airport (PHTO)

Lat: 19.72°NLon: 155.06°WElev: 36ft.

Overcast

75°F

24°C

Humidity 89%
Wind Speed SW 3 mph
Barometer 29.90 in
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Last update 24 Jul 2:00 am HST
Extended Forecast for

3 Miles WNW Keaau HI

Flash Flood Watch until July 24, 06:00pm
High Surf Warning until July 24, 06:00pm
Click here for hazard details and duration
Flash Flood Watch
High Surf Warning
  •  
    Flash Flood Watch until July 24, 06:00pm
    High Surf Warning until July 24, 06:00pm

    NOW: Multiple
    hazards in effect

    Click HERE for Details

  • Overnight

    Overnight: Frequent showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall.  Low around 66. Breezy, with a south wind 14 to 17 mph, with gusts as high as 21 mph.  Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.

    Heavy Rain
    and Breezy

    Low: 66 °F

  • Sunday

    Sunday: Frequent showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall.  High near 82. Breezy, with a southeast wind 13 to 15 mph.  Chance of precipitation is 80%. New rainfall amounts between 2 and 3 inches possible.

    Heavy Rain
    and Breezy

    High: 82 °F

  • Sunday
    Night

    Sunday Night: Showers likely. The rain could be heavy at times.  Mostly cloudy, with a low around 67. Southeast wind around 7 mph.  Chance of precipitation is 60%. New precipitation amounts between 1 and 2 inches possible.

    Heavy Rain

    Low: 67 °F

  • Monday

    Monday: Showers likely. The rain could be heavy at times.  Mostly cloudy, with a high near 82. East wind around 8 mph.  Chance of precipitation is 60%. New precipitation amounts between 1 and 2 inches possible.

    Heavy Rain

    High: 82 °F

  • Monday
    Night

    Monday Night: Showers likely, mainly before midnight.  Widespread haze before midnight. Mostly cloudy, with a low around 67. Calm wind.  Chance of precipitation is 60%. New precipitation amounts between a half and three quarters of an inch possible.

    Showers
    Likely

    Low: 67 °F

  • Tuesday

    Tuesday: Scattered showers.  Partly sunny, with a high near 83. East wind 6 to 8 mph.  Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

    Scattered
    Showers

    High: 83 °F

  • Tuesday
    Night

    Tuesday Night: Showers likely, mainly after midnight.  Mostly cloudy, with a low around 67. North wind around 6 mph.  Chance of precipitation is 70%.

    Scattered
    Showers then
    Showers
    Likely

    Low: 67 °F

  • Wednesday

    Wednesday: Showers likely, mainly before noon.  Partly sunny, with a high near 83. Northeast wind 8 to 13 mph.  Chance of precipitation is 60%.

    Showers
    Likely then
    Scattered
    Showers

    High: 83 °F

Detailed Forecast

Overnight
Frequent showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Low around 66. Breezy, with a south wind 14 to 17 mph, with gusts as high as 21 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.
Sunday
Frequent showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. High near 82. Breezy, with a southeast wind 13 to 15 mph. Chance of precipitation is 80%. New rainfall amounts between 2 and 3 inches possible.
Sunday Night
Showers likely. The rain could be heavy at times. Mostly cloudy, with a low around 67. Southeast wind around 7 mph. Chance of precipitation is 60%. New precipitation amounts between 1 and 2 inches possible.
Monday
Showers likely. The rain could be heavy at times. Mostly cloudy, with a high near 82. East wind around 8 mph. Chance of precipitation is 60%. New precipitation amounts between 1 and 2 inches possible.
Monday Night
Showers likely, mainly before midnight. Widespread haze before midnight. Mostly cloudy, with a low around 67. Calm wind. Chance of precipitation is 60%. New precipitation amounts between a half and three quarters of an inch possible.
Tuesday
Scattered showers. Partly sunny, with a high near 83. East wind 6 to 8 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.
Tuesday Night
Showers likely, mainly after midnight. Mostly cloudy, with a low around 67. North wind around 6 mph. Chance of precipitation is 70%.
Wednesday
Showers likely, mainly before noon. Partly sunny, with a high near 83. Northeast wind 8 to 13 mph. Chance of precipitation is 60%.
Wednesday Night
Scattered showers. Mostly cloudy, with a low around 67. Northeast wind 7 to 13 mph becoming west in the evening. Chance of precipitation is 50%.
Thursday
Scattered showers. Partly sunny, with a high near 83. Breezy, with a west wind 7 to 15 mph becoming northeast in the morning. Winds could gust as high as 21 mph. Chance of precipitation is 50%.
Thursday Night
Showers likely. Mostly cloudy, with a low around 67. Breezy, with a northeast wind 7 to 15 mph becoming west in the evening. Winds could gust as high as 21 mph. Chance of precipitation is 60%.
Friday
Scattered showers. Partly sunny, with a high near 83. Breezy, with a west wind 7 to 15 mph becoming northeast in the morning. Winds could gust as high as 21 mph. Chance of precipitation is 50%.
Friday Night
Showers likely. Mostly cloudy, with a low around 67. Breezy, with a northeast wind 7 to 15 mph becoming west in the evening. Winds could gust as high as 21 mph. Chance of precipitation is 60%.
Saturday
Scattered showers. Partly sunny, with a high near 83. Breezy, with a west wind 7 to 15 mph becoming northeast in the morning. Winds could gust as high as 21 mph. Chance of precipitation is 50%.
Click Map For Forecast
Point Forecast:
3 Miles WNW Keaau HI
 19.63°N 155.09°W (Elev. 794 ft)
7:30 pm HST Jul 23, 2016
2am HST Jul 24, 2016-6pm HST Jul 30, 2016
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database