Heavy Rainfall Threat for Portions of Mid-Atlantic and Northeast; Heat Linger for Southeast and Expands for the West

Moisture and nearby frontal boundary will focus more showers and thunderstorms for portions of the Mid-Atlantic and Northeast today. Rainfall could be locally heavy resulting instances of flash flooding. Meanwhile, the heat lingers for areas of the Southeast and expands across the Western U.S. the next several days. Between these areas, severe thunderstorms possible for the Plains and Midwest. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

Southern Illinois Airport (KMDH)

Lat: 37.78°NLon: 89.25°WElev: 400ft.

Fair

85°F

29°C

Humidity	61%
Wind Speed	N 9 mph
Barometer	29.96 in (1014.1 mb)
Dewpoint	70°F (21°C)
Visibility	10.00 mi
Heat Index	90°F (32°C)
Last update	6 Jul 4:52 pm CDT

More Information:

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

Extended Forecast for

2 Miles WNW Royalton IL

Tonight
Low: 69 °F
Partly Cloudy
then Patchy
Fog
Tuesday
High: 87 °F
Patchy Fog
then Chance
T-storms
Tuesday Night
Low: 68 °F
Slight Chance
T-storms then
Mostly Clear
Wednesday
High: 89 °F
Mostly Sunny
then Chance
T-storms
Wednesday Night
Low: 71 °F
Mostly Clear
Thursday
High: 94 °F
Sunny then
Slight Chance
T-storms
Thursday Night
Low: 73 °F
Slight Chance
T-storms then
Chance
T-storms
Friday
High: 91 °F
Chance
T-storms
Friday Night
Low: 72 °F
Showers
Likely

Detailed Forecast

Tonight

Patchy fog after 3am. Otherwise, partly cloudy, with a low around 69. North wind around 6 mph becoming calm in the evening.

Tuesday

A 30 percent chance of showers and thunderstorms, mainly between 2pm and 4pm. Patchy fog before 8am. Otherwise, mostly cloudy through mid morning, then becoming sunny, with a high near 87. Calm wind becoming north around 6 mph in the morning.

Tuesday Night

A 10 percent chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 68. Light north wind.

Wednesday

A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 89. Light and variable wind.

Wednesday Night

Mostly clear, with a low around 71. Light south wind.

Thursday

A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 94. South southwest wind 5 to 10 mph.

Thursday Night

A 50 percent chance of showers and thunderstorms, mainly after 1am. Mostly clear, with a low around 73. South southwest wind 7 to 9 mph.

Friday

A chance of showers and thunderstorms. Mostly sunny, with a high near 91. Southwest wind 6 to 9 mph.

Friday Night

Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 72. Southwest wind 5 to 7 mph becoming calm in the evening.

Saturday

A chance of showers and thunderstorms. Partly sunny, with a high near 89. South southwest wind 3 to 7 mph.

Saturday Night

A chance of showers and thunderstorms. Mostly cloudy, with a low around 71. South southwest wind around 5 mph becoming calm in the evening.

Sunday

A slight chance of showers and thunderstorms. Mostly sunny, with a high near 90. Calm wind becoming west northwest around 6 mph in the morning.

Sunday Night

A slight chance of showers and thunderstorms. Mostly clear, with a low around 70. North wind around 5 mph becoming calm in the evening.

Monday

Sunny, with a high near 91. Calm wind becoming north northwest around 6 mph in the morning.