Dangerous Heat to Continue through the Holiday Weekend; Severe Storms on Friday from the Plains to the Mid-Atlantic

Dangerous, record-breaking heat will continue across most of the central and eastern U.S through Friday then focusing across the eastern U.S. through the Independence Day holiday weekend. Peak heat indices of up to 115 degrees are possible. Isolated to scattered severe thunderstorms are possible from the northern/central Plains into the Midwest, Ohio Valley, and Mid-Atlantic Friday. Read More >

Hazardous Weather Conditions

Current conditions at

Harrisburg, Capital City Airport (KCXY)

Lat: 40.22°NLon: 76.86°WElev: 335ft.

Fair

92°F

33°C

Humidity	56%
Wind Speed	W 9 mph
Barometer	30.03 in (1016.8 mb)
Dewpoint	74°F (23°C)
Visibility	10.00 mi
Heat Index	102°F (39°C)
Last update	3 Jul 9:56 am EDT

More Information:

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

Extended Forecast for

2 Miles SSE Mechanicsburg PA

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

Extreme Heat Warning July 3, 10:32am until July 3, 08:00pm

Click here for hazard details and duration

Heat Advisory

Extreme Heat Warning

Extreme Heat Warning July 3, 10:32am until July 3, 08:00pm
NOW until 8:00pm Fri
Extreme Heat Warning
Today
High: 100 °F
Hot
Tonight
Low: 77 °F
Partly Cloudy
Independence Day
High: 98 °F
Hot
Saturday Night
Low: 72 °F
Chance
T-storms then
Chance
Showers
Sunday
High: 89 °F
Slight Chance
T-storms then
T-storms
Sunday Night
Low: 68 °F
T-storms then
Showers
Monday
High: 82 °F
Showers
Monday Night
Low: 66 °F
Showers

Detailed Forecast

Today

Sunny and hot, with a high near 100. Heat index values as high as 109. West wind 3 to 7 mph.

Tonight

Partly cloudy, with a low around 77. West wind 5 to 7 mph becoming calm in the evening.

Independence Day

Sunny and hot, with a high near 98. Heat index values as high as 104. Calm wind becoming west 5 to 8 mph in the morning.

Saturday Night

A chance of showers and thunderstorms before 2am, then a slight chance of showers. Mostly cloudy, with a low around 72. 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 89. Light and variable wind. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

Sunday Night

Showers and possibly a thunderstorm before 2am, then showers likely. Low around 68. 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 82. Chance of precipitation is 80%.

Monday Night

Showers and possibly a thunderstorm before 2am, then a chance of showers. Low around 66. Chance of precipitation is 80%.

Tuesday

A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 82. 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 66. Chance of precipitation is 30%.

Wednesday

Partly sunny, with a high near 85.

Wednesday Night

Partly cloudy, with a low around 66.

Thursday

Mostly sunny, with a high near 88.