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.

Light Rain Fog/Mist

77°F

25°C

Humidity 96%
Wind Speed S 8 G 21 mph
Barometer 29.81 in (1009.5 mb)
Dewpoint 76°F (24°C)
Visibility 2.00 mi
Heat Index78°F (26°C)
Last update 23 Jul 2:53 pm HST
Extended Forecast for

Hawaiian Beaches HI

Flash Flood Watch until July 24, 06:00pm
High Surf Warning until July 24, 06:00am
Flash Flood Warning until July 23, 05:00pm
Click here for hazard details and duration
Flash Flood Watch
High Surf Warning
Flash Flood Warning
  •  
    Flash Flood Watch until July 24, 06:00pm
    High Surf Warning until July 24, 06:00am
    Flash Flood Warning until July 23, 05:00pm

    NOW: Multiple
    hazards in effect

    Click HERE for Details

  • This
    Afternoon

    This Afternoon: Tropical storm conditions expected. Rain and possibly a thunderstorm. Some of the storms could produce heavy rainfall.  High near 82. East wind 29 to 39 mph, with gusts as high as 55 mph.  Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.

    Tropical
    Storm
    Conditions
    Expected

    High: 82 °F

  • Tonight

    Tonight: Tropical storm conditions possible. Rain and possibly a thunderstorm. Some of the storms could produce heavy rainfall.  Low around 70. South wind 33 to 38 mph decreasing to 11 to 16 mph. Winds could gust as high as 55 mph.  Chance of precipitation is 100%. New rainfall amounts between 3 and 4 inches possible.

    Tropical
    Storm
    Conditions
    Possible

    Low: 70 °F

  • Sunday

    Sunday: Rain and possibly a thunderstorm before 7am, then frequent showers after 7am. Some of the storms could produce heavy rainfall.  High near 84. Breezy, with a southeast wind 15 to 18 mph, with gusts as high as 32 mph.  Chance of precipitation is 100%. New precipitation amounts between 3 and 4 inches possible.

    Heavy Rain
    and Breezy

    High: 84 °F

  • Sunday
    Night

    Sunday Night: Frequent showers. The rain could be heavy at times.  Low around 70. South wind 9 to 14 mph, with gusts as high as 21 mph.  Chance of precipitation is 80%. New precipitation amounts between 2 and 3 inches possible.

    Heavy Rain

    Low: 70 °F

  • Monday

    Monday: Showers likely. The rain could be heavy at times.  Mostly cloudy, with a high near 84. East wind 9 to 11 mph.  Chance of precipitation is 70%. New precipitation amounts between three quarters and one inch possible.

    Heavy Rain

    High: 84 °F

  • Monday
    Night

    Monday Night: Showers likely, mainly before 1am.  Widespread haze after 7pm. Mostly cloudy, with a low around 70. East wind 5 to 8 mph becoming northwest after midnight.  Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    Showers
    Likely

    Low: 70 °F

  • Tuesday

    Tuesday: Showers likely, mainly between 7am and 1pm.  Widespread haze before 1pm. Mostly cloudy, with a high near 84. East wind 7 to 11 mph.  Chance of precipitation is 70%.

    Showers
    Likely

    High: 84 °F

  • Tuesday
    Night

    Tuesday Night: Showers likely, mainly after 7pm.  Mostly cloudy, with a low around 70. Northeast wind 6 to 11 mph.  Chance of precipitation is 70%.

    Showers
    Likely

    Low: 70 °F

Detailed Forecast

This Afternoon
Tropical storm conditions expected. Rain and possibly a thunderstorm. Some of the storms could produce heavy rainfall. High near 82. East wind 29 to 39 mph, with gusts as high as 55 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.
Tonight
Tropical storm conditions possible. Rain and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Low around 70. South wind 33 to 38 mph decreasing to 11 to 16 mph. Winds could gust as high as 55 mph. Chance of precipitation is 100%. New rainfall amounts between 3 and 4 inches possible.
Sunday
Rain and possibly a thunderstorm before 7am, then frequent showers after 7am. Some of the storms could produce heavy rainfall. High near 84. Breezy, with a southeast wind 15 to 18 mph, with gusts as high as 32 mph. Chance of precipitation is 100%. New precipitation amounts between 3 and 4 inches possible.
Sunday Night
Frequent showers. The rain could be heavy at times. Low around 70. South wind 9 to 14 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. New precipitation amounts between 2 and 3 inches possible.
Monday
Showers likely. The rain could be heavy at times. Mostly cloudy, with a high near 84. East wind 9 to 11 mph. Chance of precipitation is 70%. New precipitation amounts between three quarters and one inch possible.
Monday Night
Showers likely, mainly before 1am. Widespread haze after 7pm. Mostly cloudy, with a low around 70. East wind 5 to 8 mph becoming northwest after midnight. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Tuesday
Showers likely, mainly between 7am and 1pm. Widespread haze before 1pm. Mostly cloudy, with a high near 84. East wind 7 to 11 mph. Chance of precipitation is 70%.
Tuesday Night
Showers likely, mainly after 7pm. Mostly cloudy, with a low around 70. Northeast wind 6 to 11 mph. Chance of precipitation is 70%.
Wednesday
Showers likely, mainly before 1pm. Mostly cloudy, with a high near 84. Breezy, with a northeast wind 6 to 15 mph, with gusts as high as 21 mph. Chance of precipitation is 70%.
Wednesday Night
Showers likely, mainly after 1am. Mostly cloudy, with a low around 70. Breezy, with a northeast wind around 15 mph becoming west in the evening. Winds could gust as high as 21 mph. Chance of precipitation is 60%.
Thursday
Showers likely. Partly sunny, with a high near 84. Breezy, with a west wind 14 to 17 mph becoming northeast in the morning. Winds could gust as high as 24 mph. Chance of precipitation is 60%.
Thursday Night
Showers likely. Mostly cloudy, with a low around 70. Breezy, with a northeast wind 14 to 17 mph becoming west in the evening. Winds could gust as high as 24 mph. Chance of precipitation is 70%.
Friday
Showers likely. Partly sunny, with a high near 84. Breezy, with a west wind 14 to 17 mph becoming northeast in the morning. Winds could gust as high as 24 mph. Chance of precipitation is 70%.
Friday Night
Showers likely. Mostly cloudy, with a low around 70. Breezy, with a northeast wind 14 to 17 mph becoming west in the evening. Winds could gust as high as 24 mph. Chance of precipitation is 70%.
Saturday
Showers likely. Partly sunny, with a high near 84. Breezy, with a west wind 14 to 17 mph becoming northeast in the morning. Winds could gust as high as 24 mph. Chance of precipitation is 70%.
Click Map For Forecast
Point Forecast:
Hawaiian Beaches HI
 19.54°N 154.92°W (Elev. 256 ft)
7:06 am HST Jul 23, 2016
3pm HST Jul 23, 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