Dangerous Heat in the Central and Eastern U.S.; Severe Thunderstorms in the Central U.S. and Northeast; Critical Fire Weather in the Four Corners

Dangerous, record-breaking heat will intensify across most of the central and eastern U.S this week. Heat indices will likely exceed 100 degrees. Severe thunderstorms are forecast from parts of the central High Plains into the Upper Midwest, and across parts of the Northeast. Critical fire weather conditions will continue across portions of the Four Corners and Great Basin. Read More >

Hazardous Weather Conditions

Current conditions at

Harrisburg, Capital City Airport (KCXY)

Lat: 40.22°NLon: 76.86°WElev: 335ft.

Fair

73°F

23°C

Humidity	79%
Wind Speed	SE 6 mph
Barometer	30.14 in (1020.3 mb)
Dewpoint	66°F (19°C)
Visibility	10.00 mi
Last update	30 Jun 6:56 am EDT

More Information:

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

Extended Forecast for

Colonial Park PA

Heat Advisory July 3, 08:00pm until July 4, 08:00pm

Extreme Heat Warning July 1, 12:00pm until July 3, 08:00pm

Click here for hazard details and duration

Heat Advisory

Extreme Heat Warning

Today
High: 92 °F
Hot
Tonight
Low: 71 °F
Partly Cloudy
Wednesday
High: 99 °F
Mostly Sunny
then Isolated
T-storms
Wednesday Night
Low: 76 °F
Partly Cloudy
Thursday
High: 102 °F
Hot
Thursday Night
Low: 77 °F
Clear
Friday
High: 103 °F
Hot
Friday Night
Low: 75 °F
Chance
T-storms
Independence Day
High: 98 °F
Mostly Sunny
then Chance
T-storms

Detailed Forecast

Today

Mostly sunny and hot, with a high near 92. Calm wind becoming south 5 to 9 mph in the morning.

Tonight

Partly cloudy, with a low around 71. South wind 5 to 8 mph.

Wednesday

Isolated showers and thunderstorms after 1pm. Mostly sunny and hot, with a high near 99. Heat index values as high as 109. Calm wind becoming southwest around 6 mph in the afternoon. Chance of precipitation is 20%.

Wednesday Night

Partly cloudy, with a low around 76. Light west wind.

Thursday

Sunny and hot, with a high near 102. Calm wind becoming west 5 to 7 mph in the afternoon.

Thursday Night

Clear, with a low around 77.

Friday

Sunny and hot, with a high near 103.

Friday Night

A chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 75. Chance of precipitation is 30%.

Independence Day

A chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 98. Chance of precipitation is 50%.

Saturday Night

A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 2am. Partly cloudy, with a low around 72. Chance of precipitation is 30%.

Sunday

A chance of showers and thunderstorms. Mostly sunny and hot, with a high near 95. Chance of precipitation is 30%.

Sunday Night

A chance of showers and thunderstorms. Mostly cloudy, with a low around 71. Chance of precipitation is 40%.

Monday

A chance of showers and thunderstorms. Partly sunny, with a high near 90. Chance of precipitation is 40%.