Heavy Rainfall Across South Texas; Heat in the West

Excessive rainfall may produce locally considerable flash flooding over parts of South Texas, the western Gulf Coast, and Lower Mississippi River Valley through Thursday. Hot temperatures will persist over central and northern California and the Pacific Northwest through today. Read More >

Current conditions at

Southern Illinois Airport (KMDH)

Lat: 37.78°NLon: 89.25°WElev: 400ft.

A Few Clouds

60°F

16°C

Humidity	93%
Wind Speed	Calm
Barometer	29.94 in (1013.5 mb)
Dewpoint	58°F (14°C)
Visibility	10.00 mi
Last update	16 Jun 12:52 am CDT

More Information:

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

Extended Forecast for

2 Miles NNE Saint Johns IL

Overnight
Low: 58 °F
Clear
Tuesday
High: 84 °F
Sunny then
Chance
T-storms
Tuesday Night
Low: 59 °F
Mostly Clear
Wednesday
High: 90 °F
Sunny then
Sunny and
Breezy
Wednesday Night
Low: 72 °F
Showers and
Breezy
Thursday
High: 84 °F
Chance
Showers
Thursday Night
Low: 61 °F
Chance
Showers
Juneteenth
High: 83 °F
Sunny
Friday Night
Low: 61 °F
Mostly Clear

Detailed Forecast

Overnight

Clear, with a low around 58. Calm wind.

Tuesday

A 40 percent chance of showers and thunderstorms, mainly between 2pm and 4pm. Increasing clouds, with a high near 84. Light and variable wind becoming west 6 to 11 mph in the morning. Winds could gust as high as 18 mph.

Tuesday Night

Mostly clear, with a low around 59. West southwest wind 5 to 7 mph becoming calm in the evening.

Wednesday

Sunny, with a high near 90. Breezy, with a light south wind becoming south southwest 24 to 29 mph in the morning. Winds could gust as high as 37 mph.

Wednesday Night

Showers and possibly a thunderstorm. Low around 72. Breezy, with a south southwest wind 20 to 25 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 36 mph. Chance of precipitation is 80%.

Thursday

A chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 84. West southwest wind 7 to 9 mph becoming north northwest in the afternoon. Chance of precipitation is 40%.

Thursday Night

A 40 percent chance of showers before 1am. Mostly cloudy, with a low around 61. North northwest wind around 6 mph becoming calm in the evening.

Juneteenth

Sunny, with a high near 83. Calm wind becoming north northwest around 6 mph in the afternoon.

Friday Night

Mostly clear, with a low around 61. Light north wind.

Saturday

Mostly sunny, with a high near 86. Calm wind becoming south around 5 mph in the afternoon.

Saturday Night

A chance of showers and thunderstorms. Partly cloudy, with a low around 67. South southeast wind 3 to 6 mph.

Sunday

A chance of showers and thunderstorms. Partly sunny, with a high near 87. South wind 6 to 15 mph, with gusts as high as 23 mph.