Erin Strengthens to a Hurricane; Heavy Rainfall Possible in Puerto Rico and the Virgin Islands, the Upper Midwest, South Texas

Hurricane Erin may bring isolated flash and urban flooding, landslides or mudslides, and possible tropical storm conditions to Puerto Rico and the U.S. Virgin Islands this weekend. Scattered thunderstorms and heavy rainfall may bring areas of flooding this weekend over the Upper Midwest. A tropical disturbance will bring locally heavy rain and mainly urban flash flooding to far southern Texas. Read More >

Current conditions at

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

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

Overcast

66°F

19°C

Humidity 45%
Wind Speed NW 5 MPH
Barometer 30.23 in (1023.71 mb)
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Last update 17 Aug 03:00 AM MST
Extended Forecast for

6 Miles SSW St. Johns AZ

  • Today

    Today: A 10 percent chance of showers and thunderstorms after noon.  Sunny, with a high near 87. Southwest wind 5 to 7 mph becoming northwest in the afternoon.

    High: 87 °F

    Sunny then
    Slight Chance
    T-storms

  • Tonight

    Tonight: Partly cloudy, with a low around 59. West wind 5 to 8 mph.

    Low: 59 °F

    Partly Cloudy

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms after noon.  Sunny, with a high near 91. Calm wind becoming north 5 to 8 mph in the afternoon.

    High: 91 °F

    Sunny then
    Slight Chance
    T-storms

  • Monday Night

    Monday Night: Partly cloudy, with a low around 62. North wind 5 to 9 mph becoming south in the evening. Winds could gust as high as 15 mph.

    Low: 62 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms after noon.  Mostly sunny, with a high near 93. South wind 5 to 11 mph becoming east in the morning. Winds could gust as high as 18 mph.

    High: 93 °F

    Sunny then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers and thunderstorms before midnight.  Partly cloudy, with a low around 62. South wind 10 to 13 mph, with gusts as high as 21 mph.

    Low: 62 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Wednesday

    Wednesday: A 30 percent chance of showers and thunderstorms after noon.  Mostly sunny, with a high near 93. South wind around 11 mph becoming northeast in the afternoon. Winds could gust as high as 17 mph.

    High: 93 °F

    Sunny then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers and thunderstorms before midnight.  Partly cloudy, with a low around 62. Northeast wind around 11 mph becoming southeast after midnight. Winds could gust as high as 17 mph.

    Low: 62 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Thursday

    Thursday: A 20 percent chance of showers and thunderstorms after noon.  Sunny, with a high near 93. Southeast wind around 10 mph becoming northeast in the afternoon. Winds could gust as high as 15 mph.

    High: 93 °F

    Sunny then
    Slight Chance
    T-storms

Detailed Forecast

Today
A 10 percent chance of showers and thunderstorms after noon. Sunny, with a high near 87. Southwest wind 5 to 7 mph becoming northwest in the afternoon.
Tonight
Partly cloudy, with a low around 59. West wind 5 to 8 mph.
Monday
A 20 percent chance of showers and thunderstorms after noon. Sunny, with a high near 91. Calm wind becoming north 5 to 8 mph in the afternoon.
Monday Night
Partly cloudy, with a low around 62. North wind 5 to 9 mph becoming south in the evening. Winds could gust as high as 15 mph.
Tuesday
A 30 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 93. South wind 5 to 11 mph becoming east in the morning. Winds could gust as high as 18 mph.
Tuesday Night
A 20 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 62. South wind 10 to 13 mph, with gusts as high as 21 mph.
Wednesday
A 30 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 93. South wind around 11 mph becoming northeast in the afternoon. Winds could gust as high as 17 mph.
Wednesday Night
A 20 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 62. Northeast wind around 11 mph becoming southeast after midnight. Winds could gust as high as 17 mph.
Thursday
A 20 percent chance of showers and thunderstorms after noon. Sunny, with a high near 93. Southeast wind around 10 mph becoming northeast in the afternoon. Winds could gust as high as 15 mph.
Thursday Night
A 20 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 63. Northeast wind 9 to 11 mph becoming south after midnight.
Friday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 93. South wind 9 to 11 mph becoming east in the afternoon. Winds could gust as high as 17 mph.
Friday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 62. East wind 8 to 11 mph becoming south in the evening. Winds could gust as high as 17 mph.
Saturday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 91. South wind 7 to 15 mph, with gusts as high as 24 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
6 Miles SSW St. Johns AZ
 34.44°N 109.42°W (Elev. 5997 ft)
2:40 am MDT Aug 17, 2025
4am MDT Aug 17, 2025-6pm MDT Aug 23, 2025
 
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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