Tropical Storm Arthur and Heavy Rainfall in the South; Severe Weather in the Midwest

An outbreak of severe thunderstorms is expected across portions of Illinois and Indiana tonight. Intense tornadoes, swaths of damaging gusts, and hail in excess of 2 inches in diameter possible. Tropical Storm Arthur will continue to produce strong winds across coastal Upper Texas and Louisiana tonight, as well as potentially life-threatening flooding across southern Louisiana into Mississippi. Read More >

Hazardous Weather Conditions

Current conditions at

McComb, McComb / Pike County / John E Lewis Field Airport (KMCB)

Lat: 31.18°NLon: 90.47°WElev: 413ft.

Thunderstorm in Vicinity Fog/Mist

74°F

23°C

Humidity 94%
Wind Speed SW 14 G 26 mph
Barometer 29.81 in (1008.9 mb)
Dewpoint 72°F (22°C)
Visibility 4.00 mi
Last update 17 Jun 8:53 pm CDT
Extended Forecast for

6 Miles NNW Mount Hermon LA

Flood Watch June 17, 09:34pm until June 19, 07:00am
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch June 17, 09:34pm until June 19, 07:00am

    NOW until 7:00am Fri

    Flood Watch

  • Tonight

    Low: 74 °F

    Showers
    Likely then
    Heavy Rain

  • Thursday

    Thursday: Showers and thunderstorms, mainly before 5pm, then showers likely and possibly a thunderstorm after 5pm. Some of the storms could produce heavy rainfall.  High near 88. Southwest wind around 10 mph.  Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.

    High: 88 °F

    Heavy Rain
    then T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am.  Increasing clouds, with a low around 77. South wind around 5 mph.  Chance of precipitation is 50%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 77 °F

    Chance
    T-storms then
    Slight Chance
    Showers

  • Juneteenth

    Juneteenth: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1pm.  High near 92. Heat index values as high as 108. Southwest wind around 5 mph.  Chance of precipitation is 80%.

    High: 92 °F

    Chance
    T-storms then
    T-storms

  • Friday Night

    Friday Night: Showers and possibly a thunderstorm before 10pm, then a chance of showers.  Low around 75. Calm wind.  Chance of precipitation is 80%.

    Low: 75 °F

    T-storms then
    Chance
    Showers

  • Saturday

    Saturday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm.  Partly sunny, with a high near 91. Calm wind becoming south around 5 mph in the afternoon.  Chance of precipitation is 60%.

    High: 91 °F

    Chance
    T-storms then
    Showers
    Likely

  • Saturday Night

    Saturday Night: A 20 percent chance of showers and thunderstorms before 1am.  Mostly cloudy, with a low around 75. Calm wind becoming south around 5 mph.

    Low: 75 °F

    Slight Chance
    T-storms

  • Sunday

    Sunday: A 30 percent chance of showers and thunderstorms before 1pm.  Mostly sunny, with a high near 92. Southwest wind 5 to 10 mph.

    High: 92 °F

    Chance
    T-storms

Detailed Forecast

Tonight
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 11pm. Some of the storms could produce heavy rainfall. Low around 74. South wind around 10 mph. Chance of precipitation is 90%. New rainfall amounts between 2 and 3 inches possible.
Thursday
Showers and thunderstorms, mainly before 5pm, then showers likely and possibly a thunderstorm after 5pm. Some of the storms could produce heavy rainfall. High near 88. Southwest wind around 10 mph. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.
Thursday Night
A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Increasing clouds, with a low around 77. South wind around 5 mph. Chance of precipitation is 50%. New precipitation amounts between a quarter and half of an inch possible.
Juneteenth
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1pm. High near 92. Heat index values as high as 108. Southwest wind around 5 mph. Chance of precipitation is 80%.
Friday Night
Showers and possibly a thunderstorm before 10pm, then a chance of showers. Low around 75. Calm wind. Chance of precipitation is 80%.
Saturday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 91. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 60%.
Saturday Night
A 20 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 75. Calm wind becoming south around 5 mph.
Sunday
A 30 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 92. Southwest wind 5 to 10 mph.
Sunday Night
Mostly clear, with a low around 75. South wind 5 to 10 mph.
Monday
Mostly sunny and hot, with a high near 95. Southwest wind 5 to 10 mph.
Monday Night
Mostly clear, with a low around 75. Southwest wind around 5 mph becoming calm in the evening.
Tuesday
A slight chance of showers and thunderstorms. Mostly sunny and hot, with a high near 95. Calm wind becoming west around 5 mph in the afternoon.
Tuesday Night
Partly cloudy, with a low around 74. Calm wind.
Wednesday
A chance of showers and thunderstorms. Partly sunny, with a high near 93. Calm wind becoming west around 5 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
6 Miles NNW Mount Hermon LA
 31.02°N 90.34°W
6:53 pm CDT Jun 17, 2026
9pm CDT Jun 17, 2026-6pm CDT Jun 24, 2026
 
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Additional Resources

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Hourly Weather Forecast

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