On July 7, 2015, NWS implemented changes to the icons depicted on all of its point-forecast pages. Changes include new icon images with increased clarity, 6-hour increments for rapidly changing weather and new color blocks to highlight forecast hazards.

A page depicting all of the new icon images can be accessed here: www.weather.gov/forecast-icons

Changes to the icons were based on analysis of 6,700 public comments collected in 2014. Also, many of these changes are based on the results of a research project led by the National Center for Atmospheric Research.

Users are encouraged to continue to provide comments regarding these changes via email at icons@noaa.gov. NWS will continue to analyze incoming feedback and refine the icons as necessary. Any substantial change to the icons will be facilitated through the NWS public comment/review process.

Hot Weather Over Much of the U.S.

Tuesday may be the first day of September, but it will feel more like July in much of the country. Highs in the low to mid 90s will be common from the central and southern Plains across the southeast and into the mid-Atlantic. Highs over 100 will be common in the desert southwest. The hot weather is expected to continue in many areas through the Labor Day weekend.
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Current conditions at

Hilo, Hilo International Airport (PHTO)

Lat: 19.72°NLon: 155.06°WElev: 36ft.

Fair

85°F

29°C

Humidity 77%
Wind Speed N 13 G 22 mph
Barometer 29.80 in (1009.0 mb)
Dewpoint 77°F (25°C)
Visibility 10.00 mi
Heat Index96°F (36°C)
Last update 31 Aug 4:53 pm HST
Extended Forecast for

4 Miles SW Hilo HI

High Surf Warning until Wednesday 06:00am
Click here for hazard details and duration
High Surf Warning
  •  
    High Surf Warning until Wednesday 06:00am

    NOW until
    6:00am Wed

    High Surf Warning

  • This
    Afternoon

    This Afternoon: Showers likely and possibly a thunderstorm. Some of the storms could produce heavy rainfall.  Mostly cloudy, with a steady temperature around 76. Light east wind.  Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Heavy Rain

    High: 76 °F

  • Tonight

    Tonight: A 50 percent chance of showers, mainly before midnight. The rain could be heavy at times.  Mostly cloudy, with a low around 66. Light and variable wind.  New precipitation amounts between a tenth and quarter of an inch possible.

    Heavy Rain
    then Slight
    Chance
    Showers

    Low: 66 °F

  • Tuesday

    Tuesday: A 20 percent chance of showers.  Widespread haze. Mostly sunny, with a high near 84. North wind around 6 mph becoming calm  in the afternoon.

    Slight Chance
    Showers

    High: 84 °F

  • Tuesday
    Night

    Tuesday Night: A 20 percent chance of showers.  Widespread haze. Partly cloudy, with a low around 66. Calm wind becoming west around 5 mph in the evening.

    Slight Chance
    Showers

    Low: 66 °F

  • Wednesday

    Wednesday: A 20 percent chance of showers.  Widespread haze. Partly sunny, with a high near 84. North wind around 6 mph becoming calm  in the afternoon.

    Slight Chance
    Showers

    High: 84 °F

  • Wednesday
    Night

    Wednesday Night: A 20 percent chance of showers.  Widespread haze. Partly cloudy, with a low around 66. Calm wind becoming south 5 to 7 mph in the evening.

    Slight Chance
    Showers

    Low: 66 °F

  • Thursday

    Thursday: A 30 percent chance of showers. The rain could be heavy at times.  Widespread haze. Partly sunny, with a high near 84. South wind around 7 mph becoming east in the morning.

    Heavy Rain

    High: 84 °F

  • Thursday
    Night

    Thursday Night: A 30 percent chance of showers.  Widespread haze. Mostly cloudy, with a low around 66. Southwest wind around 5 mph.

    Chance
    Showers

    Low: 66 °F

Detailed Forecast

This Afternoon
Showers likely and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Mostly cloudy, with a steady temperature around 76. Light east wind. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
A 50 percent chance of showers, mainly before midnight. The rain could be heavy at times. Mostly cloudy, with a low around 66. Light and variable wind. New precipitation amounts between a tenth and quarter of an inch possible.
Tuesday
A 20 percent chance of showers. Widespread haze. Mostly sunny, with a high near 84. North wind around 6 mph becoming calm in the afternoon.
Tuesday Night
A 20 percent chance of showers. Widespread haze. Partly cloudy, with a low around 66. Calm wind becoming west around 5 mph in the evening.
Wednesday
A 20 percent chance of showers. Widespread haze. Partly sunny, with a high near 84. North wind around 6 mph becoming calm in the afternoon.
Wednesday Night
A 20 percent chance of showers. Widespread haze. Partly cloudy, with a low around 66. Calm wind becoming south 5 to 7 mph in the evening.
Thursday
A 30 percent chance of showers. The rain could be heavy at times. Widespread haze. Partly sunny, with a high near 84. South wind around 7 mph becoming east in the morning.
Thursday Night
A 30 percent chance of showers. Widespread haze. Mostly cloudy, with a low around 66. Southwest wind around 5 mph.
Friday
A 30 percent chance of showers. Widespread haze. Partly sunny, with a high near 84. Southwest wind around 6 mph becoming east in the morning.
Friday Night
A 30 percent chance of showers. Widespread haze. Mostly cloudy, with a low around 66. West wind around 5 mph.
Saturday
A 20 percent chance of showers. Widespread haze. Mostly sunny, with a high near 84. East wind around 6 mph.
Saturday Night
A 20 percent chance of showers. Widespread haze. Partly cloudy, with a low around 66. West wind around 5 mph.
Sunday
A 30 percent chance of showers. Widespread haze. Partly sunny, with a high near 84. East wind around 6 mph.
Sunday Night
A 50 percent chance of showers. Widespread haze. Mostly cloudy, with a low around 66. West wind around 5 mph.
Labor Day
A 30 percent chance of showers. Partly sunny, with a high near 84. West wind around 6 mph becoming northeast in the morning.
  Click Map For Forecast
Point Forecast:
4 Miles SW Hilo HI
 19.66°N 155.14°W (Elev. 1286 ft)
5:14 pm HST Aug 31, 2015
5pm HST Aug 31, 2015-6pm HST Sep 7, 2015
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Graph

National Digital Forecast Database