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Watching Hurricane Erin; Heavy Rainfall Threat for Upper Midwest; Heatrisk for Mississippi Valley

Hurricane Erin continues to track westward with its outer bands bringing heavy rainfall and gusty winds for Puerto Rico and US Virgin Islands. Life-threatening surf and rip currents are occurring and will spread across the Atlantic coasts this week. Meanwhile, heavy rainfall and possible flooding are in the forecast for upper Midwest through Monday. Heatrisk continues for the Mississippi Valley. Read More >

Current conditions at

Big Timber Airport (K6S0)

Lat: 45.80647°NLon: 109.97826°WElev: 4494.0ft.

Clear

77°F

25°C

Humidity 33%
Wind Speed NNE 5 MPH
Barometer 30.07 in (1018.29 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 17 Aug 12:05 PM MDT
Extended Forecast for

15 Miles W Judith Gap MT

  • This Afternoon

    This Afternoon: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5pm. Increasing clouds, with a high near 73. South southwest wind around 8 mph becoming west northwest. Chance of precipitation is 60%.

    High: 73 °F

    Showers
    Likely

  • Tonight

    Tonight: A chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and 10pm. Areas of smoke after 3am. Cloudy, then gradually becoming partly cloudy, with a low around 53. West wind around 8 mph. Chance of precipitation is 50%.

    Low: 53 °F

    Chance
    T-storms then
    Areas Smoke

  • Monday

    Monday: Sunny, with a high near 77. West wind 6 to 10 mph becoming south in the morning.

    High: 77 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 59. Southwest wind 6 to 8 mph becoming north northeast in the evening.

    Low: 59 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 85. Southwest wind 6 to 9 mph.

    High: 85 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 60. South southwest wind 6 to 8 mph becoming east northeast in the evening.

    Low: 60 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 83. West southwest wind 9 to 11 mph.

    High: 83 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 56. Northwest wind around 10 mph.

    Low: 56 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 72. Northwest wind 8 to 10 mph becoming north northeast in the afternoon.

    High: 72 °F

    Sunny

Detailed Forecast

This Afternoon
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5pm. Increasing clouds, with a high near 73. South southwest wind around 8 mph becoming west northwest. Chance of precipitation is 60%.
Tonight
A chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and 10pm. Areas of smoke after 3am. Cloudy, then gradually becoming partly cloudy, with a low around 53. West wind around 8 mph. Chance of precipitation is 50%.
Monday
Sunny, with a high near 77. West wind 6 to 10 mph becoming south in the morning.
Monday Night
Partly cloudy, with a low around 59. Southwest wind 6 to 8 mph becoming north northeast in the evening.
Tuesday
Sunny, with a high near 85. Southwest wind 6 to 9 mph.
Tuesday Night
Mostly clear, with a low around 60. South southwest wind 6 to 8 mph becoming east northeast in the evening.
Wednesday
Sunny, with a high near 83. West southwest wind 9 to 11 mph.
Wednesday Night
Partly cloudy, with a low around 56. Northwest wind around 10 mph.
Thursday
Sunny, with a high near 72. Northwest wind 8 to 10 mph becoming north northeast in the afternoon.
Thursday Night
Mostly clear, with a low around 51. Northeast wind 6 to 11 mph becoming south southeast after midnight.
Friday
Sunny, with a high near 68. South wind 6 to 13 mph becoming east southeast in the afternoon.
Friday Night
Mostly clear, with a low around 50. East wind 7 to 13 mph becoming south after midnight.
Saturday
Sunny, with a high near 71. Southeast wind 6 to 11 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
15 Miles W Judith Gap MT
 46.68°N 110.08°W (Elev. 6348 ft)
Last Update:
11:08 am MDT Aug 17, 2025
Forecast Valid:
12pm MDT Aug 17, 2025-6pm MDT Aug 23, 2025
 
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