Thunderstorms and Heavy Rain in the Mid-South; Heat Continues in the Southeast and Southwest

Severe thunderstorms and heavy rain are expected across portions of the mid-Mississippi Valley into the Ohio Valley and portions of Arizona. Dangerous heat persists in the South and Southeast while building into the Southwest. Overnight lows will be so warm that, when combined with oppressive dew points, little-to-no relief from the scorching daytime highs will be available. Read More >

Hazardous Weather Conditions

Current conditions at

Creston Municipal Airport (KCSQ)

Lat: 41.02°NLon: 94.36°WElev: 1289ft.

Fair

72°F

22°C

Humidity 100%
Wind Speed N 6 mph
Barometer 29.96 in
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Last update 19 Aug 2:15 am CDT
Extended Forecast for

Diagonal IA

  • Overnight

    Overnight: A 30 percent chance of showers and thunderstorms, mainly after 4am.  Patchy fog after 5am.  Otherwise, mostly cloudy, with a steady temperature around 70. Calm wind.

    Low: 70 °F

    Chance
    T-storms and
    Patchy Fog

  • Wednesday

    Wednesday: A chance of showers and thunderstorms before 2pm, then showers likely and possibly a thunderstorm between 2pm and 5pm, then a chance of showers and thunderstorms after 5pm.  Patchy fog before 9am.  Otherwise, mostly cloudy, with a high near 79. Calm wind becoming northeast around 6 mph in the morning.  Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    High: 79 °F

    Chance
    T-storms and
    Patchy Fog
    then Showers
    Likely

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers before 7pm.  Partly cloudy, with a low around 63. North northeast wind around 6 mph becoming calm  in the evening.  New precipitation amounts of less than a tenth of an inch possible.

    Low: 63 °F

    Chance
    Showers then
    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 83. Light and variable wind.

    High: 83 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 66. Calm wind becoming south around 5 mph after midnight.

    Low: 66 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 86.

    High: 86 °F

    Sunny

  • Friday Night

    Friday Night: A 50 percent chance of showers and thunderstorms, mainly after 1am.  Partly cloudy, with a low around 66.

    Low: 66 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Saturday

    Saturday: Sunny, with a high near 84.

    High: 84 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 63.

    Low: 63 °F

    Partly Cloudy

Detailed Forecast

Overnight
A 30 percent chance of showers and thunderstorms, mainly after 4am. Patchy fog after 5am. Otherwise, mostly cloudy, with a steady temperature around 70. Calm wind.
Wednesday
A chance of showers and thunderstorms before 2pm, then showers likely and possibly a thunderstorm between 2pm and 5pm, then a chance of showers and thunderstorms after 5pm. Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 79. Calm wind becoming northeast around 6 mph in the morning. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday Night
A 30 percent chance of showers before 7pm. Partly cloudy, with a low around 63. North northeast wind around 6 mph becoming calm in the evening. New precipitation amounts of less than a tenth of an inch possible.
Thursday
Sunny, with a high near 83. Light and variable wind.
Thursday Night
Mostly clear, with a low around 66. Calm wind becoming south around 5 mph after midnight.
Friday
Sunny, with a high near 86.
Friday Night
A 50 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 66.
Saturday
Sunny, with a high near 84.
Saturday Night
Partly cloudy, with a low around 63.
Sunday
Partly sunny, with a high near 80.
Sunday Night
Mostly cloudy, with a low around 64.
Monday
Mostly sunny, with a high near 83.
Monday Night
Partly cloudy, with a low around 66.
Tuesday
Mostly sunny, with a high near 85.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
Diagonal IA
 40.82°N 94.33°W
1:26 am CDT Aug 19, 2026
2am CDT Aug 19, 2026-6pm CDT Aug 25, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database