National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Dangerous Heat Builds and Expands; Critical Fire Weather for the Southwest; Severe Thunderstorms for Plains and Midwest

Dangerous to record breaking heat will build across the center of the nation and slowly build eastward this week. Wildfire conditions remain critical for the Southwest and portions of the Great Basin through Monday. For the northern Plains and upper Midwest, severe thunderstorms with the potential for large to very large hail and severe winds are the primary hazards. Read More >

Hazardous Weather Conditions

Current conditions at

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

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

Clear

71°F

22°C

Humidity 27%
Wind Speed SSW 4 MPH
Barometer 29.95 in (1014.22 mb)
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Last update 28 Jun 10:54 PM MST
Extended Forecast for

6 Miles SSW St. Johns AZ

Fire Weather Watch June 30, 11:00am until June 30, 08:00pm
Red Flag Warning June 29, 11:00am until June 29, 08:00pm
Click here for hazard details and duration
Fire Weather Watch
Red Flag Warning

  • Overnight

    Overnight: Clear, with a low around 55. South wind 6 to 8 mph.

    Low: 55 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 87. Breezy, with a southwest wind 6 to 11 mph increasing to 18 to 23 mph in the afternoon. Winds could gust as high as 37 mph.

    High: 87 °F

    Sunny then
    Sunny and
    Breezy

  • Monday Night

    Monday Night: Mostly clear, with a low around 53. Southwest wind 16 to 21 mph decreasing to 6 to 11 mph after midnight. Winds could gust as high as 33 mph.

    Low: 53 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 88. Breezy, with a southwest wind 7 to 12 mph increasing to 18 to 23 mph in the afternoon. Winds could gust as high as 37 mph.

    High: 88 °F

    Sunny then
    Sunny and
    Breezy

  • Tuesday Night

    Tuesday Night: Clear, with a low around 50. Breezy, with a southwest wind 17 to 22 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 34 mph.

    Low: 50 °F

    Clear and
    Breezy then
    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 88. Breezy, with a south wind 5 to 10 mph becoming southwest 18 to 23 mph in the afternoon. Winds could gust as high as 31 mph.

    High: 88 °F

    Sunny then
    Sunny and
    Breezy

  • Wednesday Night

    Wednesday Night: Clear, with a low around 50. Southwest wind 16 to 21 mph becoming south 7 to 12 mph after midnight. Winds could gust as high as 29 mph.

    Low: 50 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 90. South wind 5 to 10 mph becoming west 16 to 21 mph in the afternoon. Winds could gust as high as 28 mph.

    High: 90 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 53. Southwest wind 16 to 21 mph becoming south 5 to 10 mph after midnight. Winds could gust as high as 30 mph.

    Low: 53 °F

    Mostly Clear

Detailed Forecast

Overnight
Clear, with a low around 55. South wind 6 to 8 mph.
Monday
Sunny, with a high near 87. Breezy, with a southwest wind 6 to 11 mph increasing to 18 to 23 mph in the afternoon. Winds could gust as high as 37 mph.
Monday Night
Mostly clear, with a low around 53. Southwest wind 16 to 21 mph decreasing to 6 to 11 mph after midnight. Winds could gust as high as 33 mph.
Tuesday
Sunny, with a high near 88. Breezy, with a southwest wind 7 to 12 mph increasing to 18 to 23 mph in the afternoon. Winds could gust as high as 37 mph.
Tuesday Night
Clear, with a low around 50. Breezy, with a southwest wind 17 to 22 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 34 mph.
Wednesday
Sunny, with a high near 88. Breezy, with a south wind 5 to 10 mph becoming southwest 18 to 23 mph in the afternoon. Winds could gust as high as 31 mph.
Wednesday Night
Clear, with a low around 50. Southwest wind 16 to 21 mph becoming south 7 to 12 mph after midnight. Winds could gust as high as 29 mph.
Thursday
Sunny, with a high near 90. South wind 5 to 10 mph becoming west 16 to 21 mph in the afternoon. Winds could gust as high as 28 mph.
Thursday Night
Mostly clear, with a low around 53. Southwest wind 16 to 21 mph becoming south 5 to 10 mph after midnight. Winds could gust as high as 30 mph.
Friday
Mostly sunny, with a high near 92. Light and variable wind becoming west 16 to 21 mph in the afternoon. Winds could gust as high as 29 mph.
Friday Night
Mostly cloudy, with a low around 59. West wind 15 to 20 mph becoming light south after midnight. Winds could gust as high as 29 mph.
Independence Day
Partly sunny, with a high near 90. Light and variable wind becoming northwest 8 to 13 mph in the morning. Winds could gust as high as 21 mph.
Saturday Night
Partly cloudy, with a low around 60. West wind 5 to 13 mph becoming south after midnight. Winds could gust as high as 20 mph.
Sunday
Mostly sunny, with a high near 92. Light and variable wind becoming west 5 to 10 mph in the afternoon. Winds could gust as high as 17 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
6 Miles SSW St. Johns AZ
 34.44°N 109.42°W (Elev. 5997 ft)
Last Update:
11:27 pm MDT Jun 28, 2026
Forecast Valid:
12am MDT Jun 29, 2026-6pm MDT Jul 5, 2026
 
Forecast Discussion
 
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Additional Resources

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