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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

POPLAR (POPM8)

Lat: 48.12708°NLon: 105.07335°WElev: 2181.0ft.

NA

87°F

31°C

Humidity 31%
Wind Speed W 7 MPH
Barometer NA
Dewpoint 53°F (12°C)
Visibility NA
Heat Index85°F (29°C)
Last update 17 Aug 07:18 PM MDT
Extended Forecast for

Brockton MT

  • Tonight

    Tonight: A slight chance of showers and thunderstorms between 11pm and midnight. Increasing clouds, with a low around 62. North northwest wind around 6 mph becoming light and variable after midnight. Chance of precipitation is 20%.

    Low: 62 °F

    Slight Chance
    T-storms then
    Mostly Cloudy

  • Monday

    Monday: A 20 percent chance of showers before 7am. Mostly sunny, with a high near 90. West southwest wind 3 to 7 mph.

    High: 90 °F

    Slight Chance
    Showers then
    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 63. West wind 5 to 8 mph becoming east in the evening.

    Low: 63 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 97. Light east southeast wind becoming southeast 5 to 10 mph in the morning.

    High: 97 °F

    Hot

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 68. South southeast wind around 10 mph.

    Low: 68 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 100. Southeast wind 8 to 14 mph, with gusts as high as 20 mph.

    High: 100 °F

    Hot

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers and thunderstorms after midnight. Partly cloudy, with a low around 64. West wind 8 to 11 mph becoming north after midnight.

    Low: 64 °F

    Mostly Clear
    then Slight
    Chance
    T-storms

  • Thursday

    Thursday: Mostly sunny, with a high near 81. North northwest wind 9 to 14 mph, with gusts as high as 20 mph.

    High: 81 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 53. North wind 6 to 13 mph, with gusts as high as 18 mph.

    Low: 53 °F

    Mostly Clear

Detailed Forecast

Tonight
A slight chance of showers and thunderstorms between 11pm and midnight. Increasing clouds, with a low around 62. North northwest wind around 6 mph becoming light and variable after midnight. Chance of precipitation is 20%.
Monday
A 20 percent chance of showers before 7am. Mostly sunny, with a high near 90. West southwest wind 3 to 7 mph.
Monday Night
Mostly clear, with a low around 63. West wind 5 to 8 mph becoming east in the evening.
Tuesday
Sunny and hot, with a high near 97. Light east southeast wind becoming southeast 5 to 10 mph in the morning.
Tuesday Night
Mostly clear, with a low around 68. South southeast wind around 10 mph.
Wednesday
Sunny and hot, with a high near 100. Southeast wind 8 to 14 mph, with gusts as high as 20 mph.
Wednesday Night
A 20 percent chance of showers and thunderstorms after midnight. Partly cloudy, with a low around 64. West wind 8 to 11 mph becoming north after midnight.
Thursday
Mostly sunny, with a high near 81. North northwest wind 9 to 14 mph, with gusts as high as 20 mph.
Thursday Night
Mostly clear, with a low around 53. North wind 6 to 13 mph, with gusts as high as 18 mph.
Friday
Sunny, with a high near 77. Northwest wind 6 to 14 mph, with gusts as high as 20 mph.
Friday Night
Mostly clear, with a low around 48. North wind 6 to 13 mph, with gusts as high as 18 mph.
Saturday
Sunny, with a high near 74.
Saturday Night
Mostly clear, with a low around 48.
Sunday
Sunny, with a high near 77.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Brockton MT
 48.16°N 104.92°W (Elev. 2110 ft)
Last Update:
2:06 pm MDT Aug 17, 2025
Forecast Valid:
8pm MDT Aug 17, 2025-6pm MDT Aug 24, 2025
 
Forecast Discussion
 
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Additional Resources

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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