Areas of Thunderstorms and Heavy Rain Across the Country; Heat Wave Begins This Weekend

Widespread showers and thunderstorms, some severe, may bring heavy rain and flash flooding in the central Gulf Coast, Mid-Atlantic, the Upper Midwest, the Great Basin and Southwest. A stretch of unusually hot and humid weather is expected across portions of the central U.S. and the Southeast beginning this weekend. Critical fire weather conditions are expected in the Northwest and Great Basin. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

Harrisburg-Raleigh Airport (KHSB)

Lat: 37.81°NLon: 88.54°WElev: 387ft.

Mostly Cloudy

73°F

23°C

Humidity	97%
Wind Speed	Calm
Barometer	30.04 in
Dewpoint	72°F (22°C)
Visibility	10.00 mi
Last update	18 Jul 1:15 am CDT

More Information:

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

Extended Forecast for

Herald IL

Overnight
Low: 72 °F
Chance
T-storms and
Patchy Fog
Friday
High: 90 °F
Chance
T-storms and
Areas Fog
Friday Night
Low: 74 °F
Chance
T-storms
Saturday
High: 91 °F
Showers
Likely then
T-storms
Likely
Saturday Night
Low: 76 °F
Slight Chance
T-storms
Sunday
High: 93 °F
Slight Chance
T-storms then
Chance
T-storms
Sunday Night
Low: 75 °F
Chance
T-storms
Monday
High: 93 °F
Chance
T-storms
Monday Night
Low: 76 °F
Partly Cloudy

Detailed Forecast

Overnight

A 40 percent chance of showers and thunderstorms, mainly before 3am. Patchy fog. Otherwise, mostly cloudy, with a low around 72. Calm wind.

Friday

A 40 percent chance of showers and thunderstorms, mainly after 7am. Areas of fog before 8am. Otherwise, partly sunny, with a high near 90. Light and variable wind.

Friday Night

A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 74. Light south wind.

Saturday

Showers likely and possibly a thunderstorm before 1pm, then showers and thunderstorms likely after 1pm. Partly sunny, with a high near 91. Southwest wind around 7 mph. Chance of precipitation is 60%.

Saturday Night

A 20 percent chance of showers and thunderstorms. Mostly clear, with a low around 76. South southwest wind around 6 mph.

Sunday

A 50 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 93. West southwest wind around 6 mph.

Sunday Night

A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 75. South wind 3 to 5 mph.

Monday

A chance of showers and thunderstorms. Partly sunny, with a high near 93. South southwest wind around 6 mph.

Monday Night

Partly cloudy, with a low around 76. South southeast wind around 5 mph.

Tuesday

A slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 95. South southwest wind around 6 mph.