Dangerous Heat over the South-Central and Southwest U.S. Through Next Week

Dangerous heat persists across the Desert Southwest through this weekend and across the Southern Plains and Lower Mississippi Valley through at least the middle of next week. Numerous daily record high temperatures are expected through at least Tuesday for much of Texas and Oklahoma as well as portions of Louisiana, New Mexico, and Arizona. Read More >

Current conditions at

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

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

Clear

90°F

32°C

Humidity 21%
Wind Speed W 8 MPH
Barometer 30.27 in (1025.06 mb)
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Heat Index86°F (30°C)
Last update 22 Aug 01:00 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 92. South wind 6 to 10 mph, with gusts as high as 18 mph.

    High: 92 °F

    Chance
    T-storms

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms before midnight.  Mostly cloudy, with a low around 62. South wind 7 to 10 mph becoming east in the evening. Winds could gust as high as 18 mph.

    Low: 62 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Sunday

    Sunday: A 30 percent chance of showers and thunderstorms after noon.  Mostly sunny, with a high near 92. Calm wind becoming southwest 5 to 9 mph in the afternoon. Winds could gust as high as 17 mph.

    High: 92 °F

    Sunny then
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A 10 percent chance of showers and thunderstorms before 9pm.  Mostly cloudy, with a low around 62. Southwest wind 5 to 10 mph becoming light and variable  in the evening. Winds could gust as high as 16 mph.

    Low: 62 °F

    Slight Chance
    T-storms then
    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 93. Calm wind becoming west 5 to 7 mph in the afternoon.

    High: 93 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 63. Southwest wind 5 to 8 mph becoming calm  in the evening.

    Low: 63 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 10 percent chance of showers and thunderstorms after noon.  Mostly sunny, with a high near 95. Calm wind becoming southwest 5 to 8 mph in the afternoon. Winds could gust as high as 16 mph.

    High: 95 °F

    Sunny then
    Slight Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 64. Southwest wind 5 to 9 mph becoming southeast after midnight.

    Low: 64 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A 20 percent chance of showers and thunderstorms after noon.  Sunny and hot, with a high near 96. Light and variable wind becoming west 6 to 11 mph in the afternoon. Winds could gust as high as 17 mph.

    High: 96 °F

    Sunny then
    Slight Chance
    T-storms

Detailed Forecast

This Afternoon
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 92. South wind 6 to 10 mph, with gusts as high as 18 mph.
Tonight
A 20 percent chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 62. South wind 7 to 10 mph becoming east in the evening. Winds could gust as high as 18 mph.
Sunday
A 30 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 92. Calm wind becoming southwest 5 to 9 mph in the afternoon. Winds could gust as high as 17 mph.
Sunday Night
A 10 percent chance of showers and thunderstorms before 9pm. Mostly cloudy, with a low around 62. Southwest wind 5 to 10 mph becoming light and variable in the evening. Winds could gust as high as 16 mph.
Monday
Mostly sunny, with a high near 93. Calm wind becoming west 5 to 7 mph in the afternoon.
Monday Night
Partly cloudy, with a low around 63. Southwest wind 5 to 8 mph becoming calm in the evening.
Tuesday
A 10 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 95. Calm wind becoming southwest 5 to 8 mph in the afternoon. Winds could gust as high as 16 mph.
Tuesday Night
Partly cloudy, with a low around 64. Southwest wind 5 to 9 mph becoming southeast after midnight.
Wednesday
A 20 percent chance of showers and thunderstorms after noon. Sunny and hot, with a high near 96. Light and variable wind becoming west 6 to 11 mph in the afternoon. Winds could gust as high as 17 mph.
Wednesday Night
A 20 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 64. West wind 6 to 13 mph becoming south after midnight. Winds could gust as high as 18 mph.
Thursday
Sunny and hot, with a high near 97. Light and variable wind becoming west 6 to 11 mph in the afternoon. Winds could gust as high as 17 mph.
Thursday Night
Partly cloudy, with a low around 65. West wind 6 to 11 mph becoming light and variable after midnight. Winds could gust as high as 17 mph.
Friday
Sunny and hot, with a high near 97. Light and variable wind becoming west 5 to 10 mph in the afternoon. Winds could gust as high as 16 mph.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
St. Johns AZ
 34.51°N 109.37°W (Elev. 5797 ft)
12:32 pm MDT Aug 22, 2026
2pm MDT Aug 22, 2026-6pm MDT Aug 28, 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