Heavy Rainfall and Flooding Threats in the Midwest and Ohio Valley; Heat Continues in the Plains and Southeast

An active pattern will continue to bring heavy to excessive rainfall and flash flooding threats to the Midwest and Ohio Valley over the next couple of days. Dangerous heat continues across the central/southern Plains and Southeast U.S. into next week. There is potential for record-tying/breaking temperatures with many areas forecast to see their hottest temperatures so far this year. Read More >

Current conditions at

St. Johns, St. Johns Industrial Airpark (KSJN)

Lat: 34.51833°NLon: 109.37917°WElev: 5732.0ft.

Partly Cloudy

79°F

26°C

Humidity 39%
Wind Speed W 9 MPH
Barometer 30.14 in (1020.66 mb)
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 13 Aug 12:35 PM MST
Extended Forecast for

St. Johns AZ

  • This Afternoon

    This Afternoon: A 40 percent chance of showers and thunderstorms, mainly after 3pm.  Partly sunny, with a high near 81. Southwest wind 11 to 15 mph, with gusts as high as 23 mph.

    High: 81 °F

    Chance
    T-storms

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly before midnight.  Mostly cloudy, with a low around 59. Southwest wind 10 to 15 mph becoming light south  after midnight. Winds could gust as high as 23 mph.

    Low: 59 °F

    Chance
    T-storms

  • Friday

    Friday: A 50 percent chance of showers and thunderstorms, mainly after noon.  Partly sunny, with a high near 82. Calm wind becoming southwest 5 to 9 mph in the afternoon. Winds could gust as high as 15 mph.

    High: 82 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Friday Night

    Friday Night: A 20 percent chance of showers and thunderstorms before midnight.  Mostly cloudy, then gradually becoming mostly clear, with a low around 58. Southwest wind 5 to 10 mph becoming light south  after midnight. Winds could gust as high as 16 mph.

    Low: 58 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 86. Calm wind becoming northwest 5 to 8 mph in the afternoon.

    High: 86 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 57. West wind 5 to 8 mph becoming calm  after midnight.

    Low: 57 °F

    Partly Cloudy

  • Sunday

    Sunday: A 30 percent chance of showers and thunderstorms after noon.  Mostly sunny, with a high near 88. Calm wind becoming west 5 to 7 mph in the afternoon.

    High: 88 °F

    Mostly Sunny
    then Chance
    T-storms

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 59. Southwest wind 5 to 8 mph becoming southeast in the evening.

    Low: 59 °F

    Mostly Cloudy

  • Monday

    Monday: A 30 percent chance of showers and thunderstorms after noon.  Mostly sunny, with a high near 90. Calm wind becoming southwest 5 to 9 mph in the afternoon. Winds could gust as high as 18 mph.

    High: 90 °F

    Mostly Sunny
    then Chance
    T-storms

Detailed Forecast

This Afternoon
A 40 percent chance of showers and thunderstorms, mainly after 3pm. Partly sunny, with a high near 81. Southwest wind 11 to 15 mph, with gusts as high as 23 mph.
Tonight
A 30 percent chance of showers and thunderstorms, mainly before midnight. Mostly cloudy, with a low around 59. Southwest wind 10 to 15 mph becoming light south after midnight. Winds could gust as high as 23 mph.
Friday
A 50 percent chance of showers and thunderstorms, mainly after noon. Partly sunny, with a high near 82. Calm wind becoming southwest 5 to 9 mph in the afternoon. Winds could gust as high as 15 mph.
Friday Night
A 20 percent chance of showers and thunderstorms before midnight. Mostly cloudy, then gradually becoming mostly clear, with a low around 58. Southwest wind 5 to 10 mph becoming light south after midnight. Winds could gust as high as 16 mph.
Saturday
Sunny, with a high near 86. Calm wind becoming northwest 5 to 8 mph in the afternoon.
Saturday Night
Partly cloudy, with a low around 57. West wind 5 to 8 mph becoming calm after midnight.
Sunday
A 30 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 88. Calm wind becoming west 5 to 7 mph in the afternoon.
Sunday Night
Mostly cloudy, with a low around 59. Southwest wind 5 to 8 mph becoming southeast in the evening.
Monday
A 30 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 90. Calm wind becoming southwest 5 to 9 mph in the afternoon. Winds could gust as high as 18 mph.
Monday Night
A 20 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 60. South wind 5 to 10 mph, with gusts as high as 18 mph.
Tuesday
A 10 percent chance of showers and thunderstorms. Mostly sunny, with a high near 91. Light and variable wind becoming west 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.
Tuesday Night
A 10 percent chance of showers and thunderstorms. Partly cloudy, with a low around 63. Southwest wind 6 to 11 mph becoming light south after midnight. Winds could gust as high as 20 mph.
Wednesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 93. Light and variable wind becoming west 8 to 13 mph in the afternoon. Winds could gust as high as 22 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
St. Johns AZ
 34.51°N 109.37°W (Elev. 5797 ft)
12:33 pm MDT Aug 13, 2026
1pm MDT Aug 13, 2026-6pm MDT Aug 19, 2026
 
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Additional Resources

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Hourly Weather Forecast

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