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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

ROCKY BOY (ROCM8)

Lat: 48.17478°NLon: 109.64728°WElev: 4700.0ft.

NA

71°F

22°C

Humidity NA
Wind Speed NA NA MPH
Barometer NA
Dewpoint N/A
Visibility NA
Last update NA
Extended Forecast for

7 Miles ENE Iliad MT

  • This Afternoon

    This Afternoon: A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 84. West northwest wind around 6 mph.

    High: 84 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: A chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and 10pm. Cloudy during the early evening, then gradual clearing, with a low around 59. West northwest wind around 6 mph becoming calm in the evening. Chance of precipitation is 50%.

    Low: 59 °F

    Chance
    Showers then
    Partly Cloudy

  • Monday

    Monday: A 20 percent chance of showers after 4pm. Sunny, with a high near 88. Calm wind becoming south southwest around 6 mph in the afternoon.

    High: 88 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Monday Night

    Monday Night: Mostly clear, with a low around 63. South southwest wind around 5 mph becoming calm after midnight.

    Low: 63 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 95. Calm wind becoming south southwest around 5 mph in the afternoon.

    High: 95 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 63. Northeast wind around 6 mph.

    Low: 63 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 94. West wind 3 to 8 mph.

    High: 94 °F

    Sunny

  • Wednesday Night

    Wednesday Night: A slight chance of showers and thunderstorms. Partly cloudy, with a low around 60. West northwest wind 6 to 8 mph.

    Low: 60 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Thursday

    Thursday: Sunny, with a high near 82.

    High: 82 °F

    Sunny

Detailed Forecast

This Afternoon
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 84. West northwest wind around 6 mph.
Tonight
A chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and 10pm. Cloudy during the early evening, then gradual clearing, with a low around 59. West northwest wind around 6 mph becoming calm in the evening. Chance of precipitation is 50%.
Monday
A 20 percent chance of showers after 4pm. Sunny, with a high near 88. Calm wind becoming south southwest around 6 mph in the afternoon.
Monday Night
Mostly clear, with a low around 63. South southwest wind around 5 mph becoming calm after midnight.
Tuesday
Sunny, with a high near 95. Calm wind becoming south southwest around 5 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 63. Northeast wind around 6 mph.
Wednesday
Sunny, with a high near 94. West wind 3 to 8 mph.
Wednesday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 60. West northwest wind 6 to 8 mph.
Thursday
Sunny, with a high near 82.
Thursday Night
Mostly clear, with a low around 56.
Friday
Sunny, with a high near 77.
Friday Night
Mostly clear, with a low around 54.
Saturday
Sunny, with a high near 80.
Saturday Night
Mostly clear, with a low around 55.
Sunday
Sunny, with a high near 82.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
7 Miles ENE Iliad MT
 47.83°N 109.64°W (Elev. 3100 ft)
Last Update:
4:44 pm MDT Aug 17, 2025
Forecast Valid:
5pm MDT Aug 17, 2025-6pm MDT Aug 24, 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