National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Worcester, Worcester Regional Airport (KORH)

Lat: 42.27°NLon: 71.87°WElev: 1007ft.

Fair

76°F

24°C

Humidity 82%
Wind Speed SW 7 mph
Barometer 29.96 in (1013.7 mb)
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index77°F (25°C)
Last update 3 Jul 6:54 am EDT
Extended Forecast for

South Grafton MA

Extreme Heat Warning July 3, 07:15am until July 4, 08:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning July 3, 07:15am until July 4, 08:00pm

    NOW until 8:00pm Sat

    Extreme Heat Warning

  • Today

    High: 99 °F

    Hot

  • Tonight

    Tonight: Scattered showers and thunderstorms, mainly between midnight and 3am. Partly cloudy, with a low around 73. West wind around 7 mph. Chance of precipitation is 40%.

    Low: 73 °F

    Partly Cloudy
    then
    Scattered
    T-storms

  • Independence Day

    Independence Day: Scattered showers and thunderstorms, mainly after 2pm. Mostly sunny and hot, with a high near 93. Heat index values as high as 96. Northwest wind 8 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.

    High: 93 °F

    Scattered
    T-storms

  • Saturday Night

    Saturday Night: Scattered showers and thunderstorms before 11pm. Partly cloudy, with a low around 65. Calm wind becoming northwest around 5 mph in the evening. Chance of precipitation is 40%.

    Low: 65 °F

    Scattered
    T-storms then
    Mostly Clear

  • Sunday

    Sunday: Isolated showers after 2pm. Mostly sunny, with a high near 84. North wind around 6 mph becoming calm in the morning. Chance of precipitation is 20%.

    High: 84 °F

    Sunny then
    Isolated
    Showers

  • Sunday Night

    Sunday Night: A chance of showers, mainly between 1am and 2am. Mostly cloudy, with a low around 60. South wind 5 to 7 mph becoming calm in the evening. Chance of precipitation is 30%.

    Low: 60 °F

    Chance
    Showers

  • Monday

    Monday: A chance of showers after 2pm. Mostly cloudy, with a high near 80. Calm wind becoming south 5 to 7 mph in the afternoon. Chance of precipitation is 40%.

    High: 80 °F

    Mostly Cloudy
    then Chance
    Showers

  • Monday Night

    Monday Night: A chance of showers before 2am, then a chance of showers and thunderstorms between 2am and 5am, then showers likely and possibly a thunderstorm after 5am. Mostly cloudy, with a low around 61. East wind 3 to 5 mph. Chance of precipitation is 60%.

    Low: 61 °F

    Showers
    Likely

Detailed Forecast

Today
Sunny and hot, with a high near 99. Heat index values as high as 106. West wind 8 to 13 mph, with gusts as high as 23 mph.
Tonight
Scattered showers and thunderstorms, mainly between midnight and 3am. Partly cloudy, with a low around 73. West wind around 7 mph. Chance of precipitation is 40%.
Independence Day
Scattered showers and thunderstorms, mainly after 2pm. Mostly sunny and hot, with a high near 93. Heat index values as high as 96. Northwest wind 8 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.
Saturday Night
Scattered showers and thunderstorms before 11pm. Partly cloudy, with a low around 65. Calm wind becoming northwest around 5 mph in the evening. Chance of precipitation is 40%.
Sunday
Isolated showers after 2pm. Mostly sunny, with a high near 84. North wind around 6 mph becoming calm in the morning. Chance of precipitation is 20%.
Sunday Night
A chance of showers, mainly between 1am and 2am. Mostly cloudy, with a low around 60. South wind 5 to 7 mph becoming calm in the evening. Chance of precipitation is 30%.
Monday
A chance of showers after 2pm. Mostly cloudy, with a high near 80. Calm wind becoming south 5 to 7 mph in the afternoon. Chance of precipitation is 40%.
Monday Night
A chance of showers before 2am, then a chance of showers and thunderstorms between 2am and 5am, then showers likely and possibly a thunderstorm after 5am. Mostly cloudy, with a low around 61. East wind 3 to 5 mph. Chance of precipitation is 60%.
Tuesday
A chance of showers and thunderstorms. Partly sunny, with a high near 77. Northeast wind 6 to 9 mph. Chance of precipitation is 50%.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 59. Northeast wind 3 to 6 mph. Chance of precipitation is 30%.
Wednesday
Partly sunny, with a high near 85. North wind 3 to 6 mph.
Wednesday Night
Partly cloudy, with a low around 64. Light west wind.
Thursday
Mostly sunny and hot, with a high near 91. West wind 3 to 7 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
South Grafton MA
 42.18°N 71.68°W (Elev. 344 ft)
Last Update:
3:11 am EDT Jul 3, 2026
Forecast Valid:
7am EDT Jul 3, 2026-6pm EDT Jul 9, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation