Dangerous Heat Wave Continues; Enhanced Area of Severe Thunderstorms Today

A prolonged, dangerous heat wave will continue today in the Midwest and Mississippi Valley, and persist through the Independence Day weekend across the Ohio Valley, Mid-South, and East Coast. Widespread moderate to extreme HeatRisk is forecast. Scattered wind damage and large hail are expected from severe thunderstorms impacting parts of Nebraska into Iowa today. Read More >

Hazardous Weather Conditions

Current conditions at

Harrisburg, Harrisburg International Airport (KMDT)

Lat: 40.19°NLon: 76.76°WElev: 312ft.

A Few Clouds

98°F

37°C

Humidity	42%
Wind Speed	W 9 mph
Barometer	30.03 in (1016.6 mb)
Dewpoint	71°F (22°C)
Visibility	10.00 mi
Heat Index	106°F (41°C)
Last update	3 Jul 11:56 am EDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

Royalton PA

Extreme Heat Warning July 3, 12:00pm until July 4, 08:00pm

Click here for hazard details and duration

Extreme Heat Warning

Extreme Heat Warning July 3, 12:00pm until July 4, 08:00pm
NOW until 8:00pm Sat
Extreme Heat Warning
This Afternoon
High: 102 °F
Hot
Tonight
Low: 78 °F
Partly Cloudy
Independence Day
High: 99 °F
Hot
Saturday Night
Low: 73 °F
Chance
T-storms then
Chance
Showers
Sunday
High: 91 °F
Slight Chance
T-storms then
T-storms
Sunday Night
Low: 69 °F
T-storms then
Showers
Monday
High: 84 °F
Showers
Likely then
T-storms
Monday Night
Low: 67 °F
T-storms then
Showers
Likely

Detailed Forecast

This Afternoon

Sunny and hot, with a high near 102. Heat index values as high as 111. West wind 6 to 8 mph.

Tonight

Partly cloudy, with a low around 78. West wind 5 to 8 mph becoming calm in the evening.

Independence Day

Sunny and hot, with a high near 99. Heat index values as high as 107. West wind 3 to 8 mph.

Saturday Night

A chance of showers and thunderstorms before 2am, then a slight chance of showers. Mostly cloudy, with a low around 73. West wind around 5 mph becoming calm in the evening. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Sunday

A slight chance of showers before 11am, then a slight chance of showers and thunderstorms between 11am and 2pm, then showers and possibly a thunderstorm after 2pm. High near 91. Calm wind becoming east around 6 mph in the afternoon. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

Sunday Night

Showers and possibly a thunderstorm. Low around 69. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

Monday

Showers likely, then showers and possibly a thunderstorm after 2pm. High near 84. Chance of precipitation is 80%.

Monday Night

Showers and possibly a thunderstorm before 2am, then a chance of showers. Low around 67. Chance of precipitation is 80%.

Tuesday

A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 84. Chance of precipitation is 40%.

Tuesday Night

A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 2am. Mostly cloudy, with a low around 67. Chance of precipitation is 30%.

Wednesday

Partly sunny, with a high near 87.

Wednesday Night

Partly cloudy, with a low around 68.

Thursday

Mostly sunny, with a high near 90.