Severe Thunderstorms and Flooding from the Southern Plains to the Great Lakes; Record Heat in the East

Widely scattered severe thunderstorms may produce damaging winds, hail, and flash flooding from the southern Plains into the lower Great Lakes. Elevated to locally critical fire weather conditions will persist across portions of the Southwest and Southern High Plains due to gusty winds and dry conditions. An early-season heatwave will challenge temperature records across the eastern U.S.. Read More >

Current conditions at

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

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

Clear

77°F

25°C

Humidity 14%
Wind Speed W 21 MPH
Barometer 29.98 in (1015.24 mb)
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Heat Index76°F (24°C)
Last update 19 May 03:35 PM MST
Extended Forecast for

St. Johns AZ

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 82. Breezy, with a southwest wind around 22 mph, with gusts as high as 34 mph.

    High: 82 °F

    Mostly Sunny
    and Breezy

  • Tonight

    Tonight: Mostly cloudy, with a low around 46. Southwest wind 16 to 21 mph becoming light south  after midnight. Winds could gust as high as 32 mph.

    Low: 46 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 79. Light and variable wind becoming southwest 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.

    High: 79 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 45. Southwest wind 13 to 18 mph becoming south 5 to 10 mph after midnight. Winds could gust as high as 28 mph.

    Low: 45 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 80. Light and variable wind becoming west 11 to 16 mph in the afternoon. Winds could gust as high as 25 mph.

    High: 80 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 46. West wind 11 to 16 mph becoming south 5 to 10 mph after midnight. Winds could gust as high as 24 mph.

    Low: 46 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 82. Light and variable wind becoming west 6 to 11 mph in the morning. Winds could gust as high as 20 mph.

    High: 82 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 47. Southwest wind 11 to 16 mph becoming light and variable  after midnight. Winds could gust as high as 23 mph.

    Low: 47 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 82. Calm wind becoming northwest 5 to 9 mph in the afternoon. Winds could gust as high as 15 mph.

    High: 82 °F

    Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 82. Breezy, with a southwest wind around 22 mph, with gusts as high as 34 mph.
Tonight
Mostly cloudy, with a low around 46. Southwest wind 16 to 21 mph becoming light south after midnight. Winds could gust as high as 32 mph.
Wednesday
Partly sunny, with a high near 79. Light and variable wind becoming southwest 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.
Wednesday Night
Mostly clear, with a low around 45. Southwest wind 13 to 18 mph becoming south 5 to 10 mph after midnight. Winds could gust as high as 28 mph.
Thursday
Sunny, with a high near 80. Light and variable wind becoming west 11 to 16 mph in the afternoon. Winds could gust as high as 25 mph.
Thursday Night
Mostly clear, with a low around 46. West wind 11 to 16 mph becoming south 5 to 10 mph after midnight. Winds could gust as high as 24 mph.
Friday
Sunny, with a high near 82. Light and variable wind becoming west 6 to 11 mph in the morning. Winds could gust as high as 20 mph.
Friday Night
Mostly clear, with a low around 47. Southwest wind 11 to 16 mph becoming light and variable after midnight. Winds could gust as high as 23 mph.
Saturday
Sunny, with a high near 82. Calm wind becoming northwest 5 to 9 mph in the afternoon. Winds could gust as high as 15 mph.
Saturday Night
Mostly clear, with a low around 49. Southwest wind 9 to 14 mph becoming light and variable after midnight. Winds could gust as high as 20 mph.
Sunday
Sunny, with a high near 84. Calm wind becoming southwest 5 to 8 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 52. Southwest wind 5 to 9 mph becoming light south after midnight.
Memorial Day
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 83. Light and variable wind becoming southwest 5 to 10 mph in the afternoon. Winds could gust as high as 17 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
St. Johns AZ
 34.51°N 109.37°W (Elev. 5797 ft)
4:40 pm MDT May 19, 2026
4pm MDT May 19, 2026-6pm MDT May 25, 2026
 
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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