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

Flash Flooding Continuing Along the Gulf Coast; Dry Thunderstorms in the West

Excessive rainfall continues to produce life-threatening, locally catastrophic flash flooding along the central Gulf Coast. Isolated to scattered dry thunderstorms may cause lightning-ignited fires and erratic behavior due to gusty winds across parts Oregon, California, and the Great Basin into the weekend. Read More >

Current conditions at

KNOWLTON (KTFM8)

Lat: 46.30739°NLon: 105.02978°WElev: 3320.0ft.

NA

69°F

21°C

Humidity 33%
Wind Speed NNE 6 MPH
Barometer NA
Dewpoint 39°F (4°C)
Visibility NA
Last update 19 Jun 03:40 PM MDT
Extended Forecast for

Ismay MT

  • Tonight

    Tonight: Mostly cloudy, with a low around 49. Calm wind becoming east southeast 5 to 8 mph after midnight.

    Low: 49 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 79. Southeast wind 9 to 17 mph.

    High: 79 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 4am. Patchy fog after 3am. Low around 53. Southeast wind 8 to 16 mph. Chance of precipitation is 80%.

    Low: 53 °F

    Showers and
    Patchy Fog

  • Sunday

    Sunday: Showers and possibly a thunderstorm before 9am, then showers between 9am and noon, then showers likely and possibly a thunderstorm after noon. Patchy fog before 9am. High near 70. East southeast wind 8 to 10 mph. Chance of precipitation is 90%.

    High: 70 °F

    Showers and
    Patchy Fog

  • Sunday Night

    Sunday Night: A 30 percent chance of showers, mainly before midnight. Patchy fog after midnight. Otherwise, partly cloudy, with a low around 48. Southeast wind 3 to 8 mph.

    Low: 48 °F

    Chance
    Showers and
    Patchy Fog

  • Monday

    Monday: Showers likely, with thunderstorms also possible after noon. Mostly cloudy, with a high near 70. Light and variable wind becoming west 5 to 10 mph in the morning. Chance of precipitation is 70%.

    High: 70 °F

    Showers
    Likely

  • Monday Night

    Monday Night: A 20 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 46. West northwest wind 5 to 10 mph.

    Low: 46 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Tuesday

    Tuesday: A 20 percent chance of showers. Mostly sunny, with a high near 71. Northwest wind 5 to 10 mph.

    High: 71 °F

    Slight Chance
    Showers

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 46. North northwest wind 5 to 9 mph becoming calm in the evening.

    Low: 46 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly cloudy, with a low around 49. Calm wind becoming east southeast 5 to 8 mph after midnight.
Saturday
Mostly sunny, with a high near 79. Southeast wind 9 to 17 mph.
Saturday Night
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 4am. Patchy fog after 3am. Low around 53. Southeast wind 8 to 16 mph. Chance of precipitation is 80%.
Sunday
Showers and possibly a thunderstorm before 9am, then showers between 9am and noon, then showers likely and possibly a thunderstorm after noon. Patchy fog before 9am. High near 70. East southeast wind 8 to 10 mph. Chance of precipitation is 90%.
Sunday Night
A 30 percent chance of showers, mainly before midnight. Patchy fog after midnight. Otherwise, partly cloudy, with a low around 48. Southeast wind 3 to 8 mph.
Monday
Showers likely, with thunderstorms also possible after noon. Mostly cloudy, with a high near 70. Light and variable wind becoming west 5 to 10 mph in the morning. Chance of precipitation is 70%.
Monday Night
A 20 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 46. West northwest wind 5 to 10 mph.
Tuesday
A 20 percent chance of showers. Mostly sunny, with a high near 71. Northwest wind 5 to 10 mph.
Tuesday Night
Mostly clear, with a low around 46. North northwest wind 5 to 9 mph becoming calm in the evening.
Wednesday
Mostly sunny, with a high near 75. Calm wind becoming east around 6 mph in the afternoon.
Wednesday Night
Partly cloudy, with a low around 50. East wind around 6 mph.
Thursday
Mostly sunny, with a high near 79. Southeast wind 6 to 9 mph.
Thursday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 54. East southeast wind 7 to 10 mph.
Friday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 83. South wind 7 to 10 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Ismay MT
 46.5°N 104.81°W (Elev. 2572 ft)
Last Update:
12:37 pm MDT Jun 19, 2026
Forecast Valid:
4pm MDT Jun 19, 2026-6pm MDT Jun 26, 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