Extreme Heat Across the Southern U.S.; Flash Flooding Threats in the Mid-Atlantic, Northeast, and Four Corners Region

Dangerous and extreme heat will remain across portions of the southern U.S. this week. Heavy rainfall may bring significant flash flooding across portions of the Mid-Atlantic and Northeast through the night, and additional flash flooding concerns across New England on Wednesday. Monsoonal thunderstorms will bring a flash flood risk to the Four Corners region, especially in burn scar areas Read More >

Current conditions at

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

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

Clear

63°F

17°C

Humidity 77%
Wind Speed N 0 MPH
Barometer 30.13 in (1020.32 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 29 Jul 05:05 AM MST
Extended Forecast for

St. Johns AZ

  • Today

    Today: A 30 percent chance of showers and thunderstorms, mainly after 3pm.  Mostly sunny, with a high near 93. Light and variable wind becoming southwest 6 to 11 mph in the afternoon. Winds could gust as high as 22 mph.

    High: 93 °F

    Sunny then
    Chance
    T-storms

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms before 9pm.  Partly cloudy, with a low around 69. South wind 5 to 11 mph, with gusts as high as 22 mph.

    Low: 69 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Thursday

    Thursday: A 20 percent chance of showers and thunderstorms after 3pm.  Sunny, with a high near 94. Light and variable wind becoming west 5 to 10 mph in the afternoon. Winds could gust as high as 22 mph.

    High: 94 °F

    Sunny then
    Slight Chance
    T-storms

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 71. South wind 6 to 11 mph, with gusts as high as 22 mph.

    Low: 71 °F

    Partly Cloudy

  • Friday

    Friday: A 10 percent chance of showers and thunderstorms after noon.  Sunny and hot, with a high near 98. South wind 5 to 10 mph becoming north in the afternoon. Winds could gust as high as 20 mph.

    High: 98 °F

    Sunny then
    Slight Chance
    T-storms

  • Friday Night

    Friday Night: Partly cloudy, with a low around 71. West wind 5 to 11 mph becoming southeast after midnight. Winds could gust as high as 22 mph.

    Low: 71 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny and hot, with a high near 100. Light and variable wind becoming northwest 5 to 9 mph in the morning. Winds could gust as high as 20 mph.

    High: 100 °F

    Hot

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 70. Northwest wind 8 to 16 mph becoming south after midnight. Winds could gust as high as 25 mph.

    Low: 70 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny and hot, with a high near 100. South wind 8 to 16 mph becoming northwest in the afternoon. Winds could gust as high as 29 mph.

    High: 100 °F

    Hot

Detailed Forecast

Today
A 30 percent chance of showers and thunderstorms, mainly after 3pm. Mostly sunny, with a high near 93. Light and variable wind becoming southwest 6 to 11 mph in the afternoon. Winds could gust as high as 22 mph.
Tonight
A 20 percent chance of showers and thunderstorms before 9pm. Partly cloudy, with a low around 69. South wind 5 to 11 mph, with gusts as high as 22 mph.
Thursday
A 20 percent chance of showers and thunderstorms after 3pm. Sunny, with a high near 94. Light and variable wind becoming west 5 to 10 mph in the afternoon. Winds could gust as high as 22 mph.
Thursday Night
Partly cloudy, with a low around 71. South wind 6 to 11 mph, with gusts as high as 22 mph.
Friday
A 10 percent chance of showers and thunderstorms after noon. Sunny and hot, with a high near 98. South wind 5 to 10 mph becoming north in the afternoon. Winds could gust as high as 20 mph.
Friday Night
Partly cloudy, with a low around 71. West wind 5 to 11 mph becoming southeast after midnight. Winds could gust as high as 22 mph.
Saturday
Sunny and hot, with a high near 100. Light and variable wind becoming northwest 5 to 9 mph in the morning. Winds could gust as high as 20 mph.
Saturday Night
Partly cloudy, with a low around 70. Northwest wind 8 to 16 mph becoming south after midnight. Winds could gust as high as 25 mph.
Sunday
Sunny and hot, with a high near 100. South wind 8 to 16 mph becoming northwest in the afternoon. Winds could gust as high as 29 mph.
Sunday Night
A 20 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 70. Breezy, with a southwest wind 17 to 22 mph becoming southwest 9 to 14 mph after midnight. Winds could gust as high as 32 mph.
Monday
Sunny and hot, with a high near 99. Southwest wind 9 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 26 mph.
Monday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 69. West wind 6 to 16 mph becoming south after midnight. Winds could gust as high as 24 mph.
Tuesday
A 20 percent chance of showers and thunderstorms. Mostly sunny and hot, with a high near 97. Light and variable wind becoming west 9 to 14 mph in the morning. Winds could gust as high as 25 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
St. Johns AZ
 34.51°N 109.37°W (Elev. 5797 ft)
5:11 am MDT Jul 29, 2026
6am MDT Jul 29, 2026-6pm MDT Aug 4, 2026
 
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Additional Resources

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