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

Casper, Natrona County International Airport (KCPR)

Lat: 42.8975°NLon: 106.47306°WElev: 5348.0ft.

Partly Cloudy

88°F

31°C

Humidity 19%
Wind Speed W 9 MPH
Barometer 30.08 in (1018.63 mb)
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Heat Index84°F (29°C)
Last update 17 Aug 12:35 PM MDT
Extended Forecast for

13 Miles SW Mills WY

  • This Afternoon

    This Afternoon: A 20 percent chance of showers and thunderstorms after 1pm.  Mostly sunny, with a high near 84. West southwest wind 5 to 10 mph becoming northwest.

    High: 84 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms before 10pm.  Partly cloudy, with a low around 59. Northwest wind 6 to 11 mph becoming light and variable.

    Low: 59 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 90. South southeast wind 5 to 9 mph becoming west northwest in the afternoon.

    High: 90 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 55. West wind 6 to 8 mph becoming east in the evening.

    Low: 55 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 95. Light and variable wind becoming southeast 5 to 7 mph in the afternoon.

    High: 95 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 59. East wind 7 to 11 mph becoming south after midnight. Winds could gust as high as 21 mph.

    Low: 59 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 98. South wind 6 to 9 mph becoming west southwest in the afternoon.

    High: 98 °F

    Hot

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 60.

    Low: 60 °F

    Mostly Clear

  • Thursday

    Thursday: A 10 percent chance of showers and thunderstorms after noon.  Sunny, with a high near 92.

    High: 92 °F

    Sunny then
    Slight Chance
    T-storms

Detailed Forecast

This Afternoon
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 84. West southwest wind 5 to 10 mph becoming northwest.
Tonight
A 20 percent chance of showers and thunderstorms before 10pm. Partly cloudy, with a low around 59. Northwest wind 6 to 11 mph becoming light and variable.
Monday
Sunny, with a high near 90. South southeast wind 5 to 9 mph becoming west northwest in the afternoon.
Monday Night
Mostly clear, with a low around 55. West wind 6 to 8 mph becoming east in the evening.
Tuesday
Sunny, with a high near 95. Light and variable wind becoming southeast 5 to 7 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 59. East wind 7 to 11 mph becoming south after midnight. Winds could gust as high as 21 mph.
Wednesday
Sunny and hot, with a high near 98. South wind 6 to 9 mph becoming west southwest in the afternoon.
Wednesday Night
Mostly clear, with a low around 60.
Thursday
A 10 percent chance of showers and thunderstorms after noon. Sunny, with a high near 92.
Thursday Night
A 20 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 56.
Friday
A chance of showers and thunderstorms. Mostly sunny, with a high near 88.
Friday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 54.
Saturday
A chance of showers and thunderstorms. Mostly sunny, with a high near 88.
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ABOUT THIS FORECAST

 
Point Forecast:
13 Miles SW Mills WY
 42.71°N 106.56°W (Elev. 5259 ft)
11:28 am MDT Aug 17, 2025
12pm MDT Aug 17, 2025-6pm MDT Aug 23, 2025
 
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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