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 across parts of the Upper Midwest into the Great Lakes, the Northeast, and the central High Plains. 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.

Partly Cloudy

96°F

36°C

Humidity	43%
Wind Speed	W 5 mph
Barometer	29.96 in (1014.1 mb)
Dewpoint	70°F (21°C)
Visibility	10.00 mi
Heat Index	103°F (39°C)
Last update	1 Jul 4:56 pm 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 until July 3, 08:00pm

Click here for hazard details and duration

Heat Advisory

Extreme Heat Warning

Extreme Heat Warning until July 3, 08:00pm
NOW until 8:00pm Fri
Extreme Heat Warning
This Afternoon
High: 101 °F
Hot
Tonight
Low: 76 °F
Clear
Thursday
High: 104 °F
Hot
Thursday Night
Low: 78 °F
Clear
Friday
High: 103 °F
Hot
Friday Night
Low: 77 °F
Mostly Clear
Independence Day
High: 99 °F
Hot
Saturday Night
Low: 73 °F
Chance
T-storms

Detailed Forecast

This Afternoon

Sunny and hot, with a high near 101. Heat index values as high as 109. West wind around 6 mph.

Tonight

Clear, with a low around 76. Light west wind.

Thursday

Sunny and hot, with a high near 104. Heat index values as high as 110. Calm wind becoming west around 6 mph in the afternoon.

Thursday Night

Clear, with a low around 78. West wind 3 to 6 mph.

Friday

Sunny and hot, with a high near 103. Light west wind increasing to 5 to 10 mph in the morning.

Friday Night

Mostly clear, with a low around 77.

Independence Day

Mostly sunny and hot, with a high near 99.

Saturday Night

A chance of showers and thunderstorms between 8pm and 2am. Mostly cloudy, with a low around 73. Chance of precipitation is 40%.

Sunday

Showers likely and possibly a thunderstorm after 2pm. Partly sunny and hot, with a high near 95. Chance of precipitation is 70%.

Sunday Night

Showers likely and possibly a thunderstorm before 8pm, then showers likely between 8pm and 2am. Mostly cloudy, with a low around 71. Chance of precipitation is 60%.

Monday

Showers likely and possibly a thunderstorm. Partly sunny, with a high near 91. Chance of precipitation is 60%.

Monday Night

Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 69. Chance of precipitation is 60%.

Tuesday

Partly sunny, with a high near 87.

Tuesday Night

Partly cloudy, with a low around 67.

Wednesday

Partly sunny, with a high near 90.