Thunderstorms and Heavy Rain in the Mid-South; Heat Continues in the Southeast and Southwest

Severe thunderstorms and heavy rain are expected across portions of the mid-Mississippi Valley into the Ohio Valley and portions of Arizona. Dangerous heat persists in the South and Southeast while building into the Southwest. Overnight lows will be so warm that, when combined with oppressive dew points, little-to-no relief from the scorching daytime highs will be available. Read More >

Current conditions at

FISHTAIL (FSLM8)

Lat: 45.45806°NLon: 109.57139°WElev: 4550.0ft.

NA

59°F

15°C

Humidity 53%
Wind Speed WSW 6 MPH
Barometer NA
Dewpoint 42°F (6°C)
Visibility NA
Last update 19 Aug 12:22 AM MDT
Extended Forecast for

Fishtail MT

  • Overnight

    Overnight: Mostly clear, with a low around 55. Southwest wind around 6 mph.

    Low: 55 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 89. Calm wind becoming northwest 5 to 9 mph in the afternoon.

    High: 89 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Patchy smoke after 3am. Mostly clear, with a low around 56. North northwest wind 5 to 9 mph becoming light and variable  after midnight.

    Low: 56 °F

    Mostly Clear
    then Patchy
    Smoke

  • Thursday

    Thursday: Patchy smoke before 9am. Sunny and hot, with a high near 94. Calm wind becoming east northeast around 5 mph in the afternoon.

    High: 94 °F

    Patchy Smoke
    then Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 61. South southwest wind 5 to 7 mph becoming light and variable  after midnight.

    Low: 61 °F

    Partly Cloudy

  • Friday

    Friday: Sunny and hot, with a high near 92. Calm wind becoming east northeast 5 to 7 mph in the afternoon.

    High: 92 °F

    Hot

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 62. East wind 5 to 9 mph becoming calm  after midnight.

    Low: 62 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 40 percent chance of showers and thunderstorms after noon.  Partly sunny, with a high near 88. Calm wind becoming east around 5 mph in the afternoon.

    High: 88 °F

    Partly Sunny
    then Chance
    T-storms

  • Saturday Night

    Saturday Night: A 40 percent chance of showers and thunderstorms before midnight.  Mostly cloudy, with a low around 59. Northwest wind around 6 mph becoming southwest in the evening.

    Low: 59 °F

    Chance
    Showers then
    Mostly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 55. Southwest wind around 6 mph.
Wednesday
Sunny, with a high near 89. Calm wind becoming northwest 5 to 9 mph in the afternoon.
Wednesday Night
Patchy smoke after 3am. Mostly clear, with a low around 56. North northwest wind 5 to 9 mph becoming light and variable after midnight.
Thursday
Patchy smoke before 9am. Sunny and hot, with a high near 94. Calm wind becoming east northeast around 5 mph in the afternoon.
Thursday Night
Partly cloudy, with a low around 61. South southwest wind 5 to 7 mph becoming light and variable after midnight.
Friday
Sunny and hot, with a high near 92. Calm wind becoming east northeast 5 to 7 mph in the afternoon.
Friday Night
Mostly cloudy, with a low around 62. East wind 5 to 9 mph becoming calm after midnight.
Saturday
A 40 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 88. Calm wind becoming east around 5 mph in the afternoon.
Saturday Night
A 40 percent chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 59. Northwest wind around 6 mph becoming southwest in the evening.
Sunday
A 40 percent chance of showers and thunderstorms after noon. Partly sunny and hot, with a high near 90. Calm wind becoming west northwest 5 to 9 mph in the afternoon.
Sunday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 57. Northwest wind 5 to 8 mph becoming light and variable after midnight.
Monday
Mostly sunny, with a high near 86. Calm wind becoming east northeast around 6 mph in the afternoon.
Monday Night
A 20 percent chance of showers. Partly cloudy, with a low around 57. East wind 5 to 7 mph becoming southwest after midnight.
Tuesday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 87. Calm wind becoming east northeast around 6 mph in the afternoon.
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ABOUT THIS FORECAST

 
Point Forecast:
Fishtail MT
 45.44°N 109.51°W (Elev. 4600 ft)
12:32 am MDT Aug 19, 2026
12am MDT Aug 19, 2026-6pm MDT Aug 25, 2026
 
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Additional Resources

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Hourly Weather Forecast

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