National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Areas of Dangerous Heat and Heavy Rain with Possible Flooding into this Weekend

Hot temperatures and high humidity are forecast to continue across much of northeast Texas into the mid-Mississippi Valley into this weekend with heat advisories in effect. Heavy to excessive rainfall occurring at times through Saturday could bring areas of flooding across parts of the central Plains into the upper Midwest/Great Lakes, and Four Corners states. Read More >

Hazardous Weather Conditions

Current conditions at

Neil Armstrong Airport (KAXV)

Lat: 40.49°NLon: 84.3°WElev: 912ft.

Overcast

70°F

21°C

Humidity 100%
Wind Speed Calm
Barometer 30.24 in
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Last update 17 Sep 2:15 am EDT
Extended Forecast for

Saint Johns OH

Flood Watch September 17, 02:26am until September 17, 02:00pm
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch September 17, 02:26am until September 17, 02:00pm

    NOW until 2:00pm Thu

    Flood Watch

  • Overnight

    Low: 69 °F

    Chance
    Showers

  • Thursday

    Thursday: Showers and thunderstorms likely before 3pm, then a slight chance of showers between 3pm and 5pm, then a slight chance of showers and thunderstorms after 5pm. Mostly cloudy, with a high near 83. West wind 5 to 7 mph. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 83 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 65. Northeast wind 3 to 6 mph.

    Low: 65 °F

    Mostly Cloudy

  • Friday

    Friday: Cloudy, then gradually becoming mostly sunny, with a high near 77. East wind 7 to 9 mph.

    High: 77 °F

    Decreasing
    Clouds

  • Friday Night

    Friday Night: Mostly clear, with a low around 59. East wind 5 to 8 mph.

    Low: 59 °F

    Mostly Clear

  • Saturday

    Saturday: A chance of showers and thunderstorms, mainly after 2pm. Mostly sunny, with a high near 83. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 83 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before 8pm, then showers and possibly a thunderstorm between 8pm and 2am, then showers likely after 2am. Low around 67. Chance of precipitation is 80%.

    Low: 67 °F

    Showers

  • Sunday

    Sunday: Showers likely, mainly before 2pm. Mostly cloudy, with a high near 80. Chance of precipitation is 60%.

    High: 80 °F

    Showers
    Likely

Detailed Forecast

Overnight
A chance of showers and thunderstorms. Mostly cloudy, with a low around 69. Light southeast wind. Chance of precipitation is 40%. New rainfall amounts between a quarter and half of an inch possible.
Thursday
Showers and thunderstorms likely before 3pm, then a slight chance of showers between 3pm and 5pm, then a slight chance of showers and thunderstorms after 5pm. Mostly cloudy, with a high near 83. West wind 5 to 7 mph. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.
Thursday Night
Mostly cloudy, with a low around 65. Northeast wind 3 to 6 mph.
Friday
Cloudy, then gradually becoming mostly sunny, with a high near 77. East wind 7 to 9 mph.
Friday Night
Mostly clear, with a low around 59. East wind 5 to 8 mph.
Saturday
A chance of showers and thunderstorms, mainly after 2pm. Mostly sunny, with a high near 83. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday Night
A chance of showers and thunderstorms before 8pm, then showers and possibly a thunderstorm between 8pm and 2am, then showers likely after 2am. Low around 67. Chance of precipitation is 80%.
Sunday
Showers likely, mainly before 2pm. Mostly cloudy, with a high near 80. Chance of precipitation is 60%.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 60. Chance of precipitation is 40%.
Monday
A chance of showers. Mostly cloudy, with a high near 77. Chance of precipitation is 40%.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 60. Chance of precipitation is 40%.
Tuesday
A chance of showers. Mostly cloudy, with a high near 77. Chance of precipitation is 40%.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 60. Chance of precipitation is 30%.
Wednesday
Partly sunny, with a high near 77.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Saint Johns OH
 40.56°N 84.18°W (Elev. 899 ft)
Last Update:
6:49 pm EDT Sep 16, 2026
Forecast Valid:
2am EDT Sep 17, 2026-6pm EDT Sep 23, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation