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

Severe Weather Across the Center of the Nation; Fire Weather Concerns for Southwest and California; Snow for the Central Rockies

Severe thunderstorms will continue to impact the center of the Nation through today. Very large hail, strong tornadoes, and damaging winds are expected from the Great Lakes into the central/southern Plains; Flash flooding is possible for portions into the mid-Mississippi Valley. Critical fire weather conditions for the Southwest and central valley of California today. Winter hangs on for Rockies. 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

73°F

23°C

Humidity 15%
Wind Speed WSW 23 MPH
Barometer 29.89 in (1012.19 mb)
Dewpoint 23°F (-5°C)
Visibility 10.00 mi
Last update 18 May 02:35 PM MST
Extended Forecast for

St. Johns AZ

Wind Advisory May 18, 03:57pm until May 18, 07:00pm
Click here for hazard details and duration
Wind Advisory
  •  
    Wind Advisory May 18, 03:57pm until May 18, 07:00pm

    NOW until 7:00pm Mon

    Wind Advisory

  • This Afternoon

    High: 74 °F

    Sunny and
    Breezy

  • Tonight

    Tonight: Clear, with a low around 40. Breezy, with a west wind 17 to 22 mph becoming light south after midnight. Winds could gust as high as 36 mph.

    Low: 40 °F

    Clear and
    Breezy then
    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 79. Light and variable wind becoming southwest 16 to 21 mph in the afternoon. Winds could gust as high as 32 mph.

    High: 79 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Increasing clouds, with a low around 42. Southwest wind 16 to 21 mph becoming south 5 to 10 mph after midnight. Winds could gust as high as 31 mph.

    Low: 42 °F

    Increasing
    Clouds

  • Wednesday

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

    High: 79 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 43. Southwest wind 15 to 20 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 29 mph.

    Low: 43 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 79. Light and variable wind becoming west 10 to 15 mph in the afternoon. Winds could gust as high as 22 mph.

    High: 79 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 45. West wind 11 to 16 mph becoming light and variable after midnight. Winds could gust as high as 22 mph.

    Low: 45 °F

    Mostly Clear

Detailed Forecast

This Afternoon
Sunny, with a high near 74. Breezy, with a southwest wind around 25 mph, with gusts as high as 40 mph.
Tonight
Clear, with a low around 40. Breezy, with a west wind 17 to 22 mph becoming light south after midnight. Winds could gust as high as 36 mph.
Tuesday
Sunny, with a high near 79. Light and variable wind becoming southwest 16 to 21 mph in the afternoon. Winds could gust as high as 32 mph.
Tuesday Night
Increasing clouds, with a low around 42. Southwest wind 16 to 21 mph becoming south 5 to 10 mph after midnight. Winds could gust as high as 31 mph.
Wednesday
Partly sunny, with a high near 79. Light and variable wind becoming west 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.
Wednesday Night
Partly cloudy, with a low around 43. Southwest wind 15 to 20 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 29 mph.
Thursday
Sunny, with a high near 79. Light and variable wind becoming west 10 to 15 mph in the afternoon. Winds could gust as high as 22 mph.
Thursday Night
Mostly clear, with a low around 45. West wind 11 to 16 mph becoming light and variable after midnight. Winds could gust as high as 22 mph.
Friday
Sunny, with a high near 81. Light and variable wind becoming west 8 to 13 mph in the afternoon. Winds could gust as high as 18 mph.
Friday Night
Partly cloudy, with a low around 46. Southwest wind 10 to 15 mph becoming light and variable after midnight. Winds could gust as high as 22 mph.
Saturday
Sunny, with a high near 81. Calm wind becoming west 5 to 9 mph in the afternoon.
Saturday Night
Partly cloudy, with a low around 49. Southwest wind 8 to 13 mph becoming light and variable after midnight. Winds could gust as high as 18 mph.
Sunday
Sunny, with a high near 83. Calm wind becoming west 5 to 9 mph in the afternoon. Winds could gust as high as 15 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
St. Johns AZ
 34.51°N 109.37°W (Elev. 5797 ft)
Last Update:
12:31 pm MDT May 18, 2026
Forecast Valid:
3pm MDT May 18, 2026-6pm MDT May 24, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation