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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

CW1334 Chester (C1334)

Lat: 48.51253°NLon: 110.96415°WElev: 3129.0ft.

NA

81°F

27°C

Humidity 26%
Wind Speed W 5 MPH
Barometer 29.91 in (1012.87 mb)
Dewpoint 43°F (6°C)
Visibility NA
Heat Index80°F (27°C)
Last update 17 Aug 04:15 PM MDT
Extended Forecast for

13 Miles S Chester MT

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around 54. West wind around 6 mph becoming calm in the evening.

    Low: 54 °F

    Decreasing
    Clouds

  • Monday

    Monday: A 20 percent chance of showers after 5pm. Sunny, with a high near 89. Calm wind becoming south southwest around 6 mph in the afternoon.

    High: 89 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Monday Night

    Monday Night: Mostly clear, with a low around 60. South wind around 6 mph becoming calm after midnight.

    Low: 60 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 95. Calm wind becoming southeast around 6 mph in the afternoon.

    High: 95 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 61. East southeast wind around 6 mph becoming north after midnight.

    Low: 61 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 93. West northwest wind 5 to 8 mph.

    High: 93 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 56. West northwest wind 7 to 10 mph, with gusts as high as 18 mph.

    Low: 56 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 81. Northwest wind around 7 mph.

    High: 81 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 53.

    Low: 53 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around 54. West wind around 6 mph becoming calm in the evening.
Monday
A 20 percent chance of showers after 5pm. Sunny, with a high near 89. Calm wind becoming south southwest around 6 mph in the afternoon.
Monday Night
Mostly clear, with a low around 60. South wind around 6 mph becoming calm after midnight.
Tuesday
Sunny, with a high near 95. Calm wind becoming southeast around 6 mph in the afternoon.
Tuesday Night
Partly cloudy, with a low around 61. East southeast wind around 6 mph becoming north after midnight.
Wednesday
Sunny, with a high near 93. West northwest wind 5 to 8 mph.
Wednesday Night
Partly cloudy, with a low around 56. West northwest wind 7 to 10 mph, with gusts as high as 18 mph.
Thursday
Sunny, with a high near 81. Northwest wind around 7 mph.
Thursday Night
Mostly clear, with a low around 53.
Friday
Sunny, with a high near 77.
Friday Night
Mostly clear, with a low around 52.
Saturday
Sunny, with a high near 81.
Saturday Night
Mostly clear, with a low around 53.
Sunday
Sunny, with a high near 83.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
13 Miles S Chester MT
 48.32°N 110.95°W (Elev. 2999 ft)
Last Update:
2:23 pm MDT Aug 17, 2025
Forecast Valid:
4pm MDT Aug 17, 2025-6pm MDT Aug 24, 2025
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation