Threats of Heavy Rainfall, Severe Thunderstorms and Dangerous Heat

Several complexes of thunderstorms, some severe with heavy rainfall, will impact areas from the northern Plains, Great Lakes, Ohio Valley to the mid-Atlantic. This threat will shift toward the Carolinas on Friday. Heavy rainfall, remnants of Edouard, continues for portions of eastern Texas through today. In-between these systems, a dome of high pressure and heat for central and eastern states. Read More >

Current conditions at

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

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

Overcast

75°F

24°C

Humidity 50%
Wind Speed S 4 MPH
Barometer 30.14 in (1020.66 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 03 Sep 02:00 PM MST
Extended Forecast for

St. Johns AZ

  • This Afternoon

    This Afternoon: A 40 percent chance of showers and thunderstorms.  Mostly cloudy, with a high near 85. South wind 7 to 9 mph, with gusts as high as 16 mph.

    High: 85 °F

    Chance
    T-storms

  • Tonight

    Tonight: A chance of showers and thunderstorms.  Mostly cloudy, with a low around 58. South wind 5 to 9 mph becoming calm  after midnight. Winds could gust as high as 16 mph.  Chance of precipitation is 30%.

    Low: 58 °F

    Chance
    T-storms then
    Chance
    Showers

  • Friday

    Friday: A chance of showers before 9am, then a chance of showers and thunderstorms between 9am and noon, then showers likely and possibly a thunderstorm after noon.  Mostly cloudy, with a high near 79. Light and variable wind becoming southwest 5 to 10 mph in the afternoon. Winds could gust as high as 18 mph.  Chance of precipitation is 60%.

    High: 79 °F

    Chance
    Showers then
    Showers
    Likely

  • Friday Night

    Friday Night: A 10 percent chance of showers and thunderstorms before midnight.  Partly cloudy, with a low around 57. West wind 5 to 10 mph becoming light and variable  after midnight. Winds could gust as high as 18 mph.

    Low: 57 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Saturday

    Saturday: A 10 percent chance of showers and thunderstorms after noon.  Mostly sunny, with a high near 81. Calm wind becoming northwest 5 to 7 mph in the afternoon.

    High: 81 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A 10 percent chance of showers and thunderstorms before midnight.  Mostly cloudy, with a low around 59. West wind 5 to 7 mph becoming calm  after midnight.

    Low: 59 °F

    Slight Chance
    T-storms then
    Mostly Cloudy

  • Sunday

    Sunday: A 30 percent chance of showers and thunderstorms after noon.  Mostly sunny, with a high near 83. Calm wind becoming west 5 to 9 mph in the afternoon. Winds could gust as high as 17 mph.

    High: 83 °F

    Mostly Sunny
    then Chance
    T-storms

  • Sunday Night

    Sunday Night: A 20 percent chance of showers and thunderstorms before midnight.  Partly cloudy, with a low around 61. West wind 5 to 9 mph becoming light and variable  after midnight. Winds could gust as high as 17 mph.

    Low: 61 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Labor Day

    Labor Day: A 40 percent chance of showers and thunderstorms after noon.  Partly sunny, with a high near 83. Light and variable wind becoming west 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 83 °F

    Mostly Sunny
    then Chance
    T-storms

Detailed Forecast

This Afternoon
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 85. South wind 7 to 9 mph, with gusts as high as 16 mph.
Tonight
A chance of showers and thunderstorms. Mostly cloudy, with a low around 58. South wind 5 to 9 mph becoming calm after midnight. Winds could gust as high as 16 mph. Chance of precipitation is 30%.
Friday
A chance of showers before 9am, then a chance of showers and thunderstorms between 9am and noon, then showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 79. Light and variable wind becoming southwest 5 to 10 mph in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 60%.
Friday Night
A 10 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 57. West wind 5 to 10 mph becoming light and variable after midnight. Winds could gust as high as 18 mph.
Saturday
A 10 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 81. Calm wind becoming northwest 5 to 7 mph in the afternoon.
Saturday Night
A 10 percent chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 59. West wind 5 to 7 mph becoming calm after midnight.
Sunday
A 30 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 83. Calm wind becoming west 5 to 9 mph in the afternoon. Winds could gust as high as 17 mph.
Sunday Night
A 20 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 61. West wind 5 to 9 mph becoming light and variable after midnight. Winds could gust as high as 17 mph.
Labor Day
A 40 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 83. Light and variable wind becoming west 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.
Monday Night
A 20 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 60. West wind 5 to 10 mph becoming light and variable after midnight. Winds could gust as high as 20 mph.
Tuesday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 84. Calm wind becoming southwest 5 to 8 mph in the afternoon. Winds could gust as high as 18 mph.
Tuesday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 61. South wind 5 to 9 mph, with gusts as high as 18 mph.
Wednesday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 83. Light and variable wind becoming southwest 6 to 11 mph in the afternoon. Winds could gust as high as 20 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
St. Johns AZ
 34.51°N 109.37°W (Elev. 5797 ft)
12:31 pm MDT Sep 3, 2026
3pm MDT Sep 3, 2026-6pm MDT Sep 9, 2026
 
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Additional Resources

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