Lake-effect Snow and Whiteout Conditions in the Great Lakes Region; Below-average Temperatures in the East

Heavy lake-effect and lake-enhanced snow will persist downwind of the Great Lakes and produce some whiteout conditions that could cause difficult travel conditions. A coastal low will produce moderate to heavy snow over parts of southern and eastern New England into the afternoon. Below average temperatures are expected across the eastern U.S., particularly with chilly morning temperatures. Read More >

Current conditions at

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

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

Clear

20°F

-7°C

Humidity 73%
Wind Speed SW 4 MPH
Barometer 30.25 in (1024.38 mb)
Dewpoint 13°F (-11°C)
Visibility 10.00 mi
Wind Chill14°F (-10°C)
Last update 20 Jan 04:54 AM MST
Extended Forecast for

St. Johns AZ

  • Today

    Today: Sunny, with a high near 52. Calm wind becoming west around 6 mph in the afternoon.

    High: 52 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 14. South wind 3 to 5 mph.

    Low: 14 °F

    Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 56. Light and variable wind.

    High: 56 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 20. Southwest wind around 5 mph becoming calm  after midnight.

    Low: 20 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 59. Calm wind becoming west 5 to 7 mph in the afternoon.

    High: 59 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 27. South wind 6 to 8 mph.

    Low: 27 °F

    Mostly Cloudy

  • Friday

    Friday: A 30 percent chance of showers after 11am.  Partly sunny, with a high near 55. Southwest wind 6 to 11 mph, with gusts as high as 18 mph.

    High: 55 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A 50 percent chance of showers.  Mostly cloudy, with a low around 28. Southwest wind 8 to 11 mph, with gusts as high as 18 mph.

    Low: 28 °F

    Chance
    Showers

  • Saturday

    Saturday: A chance of snow showers before 8am, then a chance of rain showers between 8am and 3pm, then a chance of rain and snow showers after 3pm.  Partly sunny, with a high near 49. West wind 8 to 10 mph, with gusts as high as 17 mph.  Chance of precipitation is 40%.

    High: 49 °F

    Chance
    Rain/Snow

Detailed Forecast

Today
Sunny, with a high near 52. Calm wind becoming west around 6 mph in the afternoon.
Tonight
Clear, with a low around 14. South wind 3 to 5 mph.
Wednesday
Mostly sunny, with a high near 56. Light and variable wind.
Wednesday Night
Mostly cloudy, with a low around 20. Southwest wind around 5 mph becoming calm after midnight.
Thursday
Partly sunny, with a high near 59. Calm wind becoming west 5 to 7 mph in the afternoon.
Thursday Night
Mostly cloudy, with a low around 27. South wind 6 to 8 mph.
Friday
A 30 percent chance of showers after 11am. Partly sunny, with a high near 55. Southwest wind 6 to 11 mph, with gusts as high as 18 mph.
Friday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 28. Southwest wind 8 to 11 mph, with gusts as high as 18 mph.
Saturday
A chance of snow showers before 8am, then a chance of rain showers between 8am and 3pm, then a chance of rain and snow showers after 3pm. Partly sunny, with a high near 49. West wind 8 to 10 mph, with gusts as high as 17 mph. Chance of precipitation is 40%.
Saturday Night
A slight chance of rain and snow showers before 11pm. Partly cloudy, with a low around 22. Northwest wind 6 to 9 mph, with gusts as high as 15 mph. Chance of precipitation is 20%.
Sunday
Sunny, with a high near 50. North wind 5 to 7 mph.
Sunday Night
Mostly clear, with a low around 19. East wind 5 to 7 mph.
Monday
Sunny, with a high near 51. East wind 5 to 8 mph becoming north in the afternoon.
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)
4:43 am MST Jan 20, 2026
5am MST Jan 20, 2026-6pm MST Jan 26, 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