National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Atmospheric River Bringing Heavy Rain to Southern California and Heavy Snow to the Sierra Nevadas

A strong atmospheric river will continue heavy rain over southern California through Friday. The heaviest rainfall is ongoing today in the Los Angeles Basin. Flash and urban flooding is possible. A prolonged heavy snowfall has begun over the Sierra Nevada Mountains and will continue through Friday. Travel will become increasingly difficult over the passes due to snow and strong winds. Read More >

Hazardous Weather Conditions

Current conditions at

Casper, Natrona County International Airport (KCPR)

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

Clear

39°F

4°C

Humidity 60%
Wind Speed SSW 13 MPH
Barometer 29.91 in (1012.87 mb)
Dewpoint 26°F (-3°C)
Visibility 10.00 mi
Wind Chill31°F (-1°C)
Last update 26 Dec 03:20 AM MST
Extended Forecast for

Mills WY

  • Overnight

    Overnight: Mostly clear, with a steady temperature around 45. Breezy, with a southwest wind 17 to 20 mph, with gusts as high as 28 mph.

    Low: 45 °F

    Mostly Clear
    and Breezy

  • Friday

    Friday: A 10 percent chance of rain after 5pm. Partly sunny, with a high near 53. Windy, with a southwest wind 22 to 31 mph, with gusts as high as 44 mph.

    High: 53 °F

    Windy. Mostly
    Sunny then
    Slight Chance
    Rain

  • Friday Night

    Friday Night: A chance of rain before 11pm, then a chance of rain and snow. Mostly cloudy, with a low around 36. Windy, with a southwest wind 21 to 26 mph, with gusts as high as 37 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.

    Low: 36 °F

    Chance
    Rain/Snow and
    Windy

  • Saturday

    Saturday: Partly sunny, with a high near 47. Windy, with a southwest wind 18 to 26 mph, with gusts as high as 37 mph.

    High: 47 °F

    Partly Sunny
    and Windy

  • Saturday Night

    Saturday Night: Snow likely. Mostly cloudy, with a low around 10. Blustery, with a north wind 7 to 17 mph, with gusts as high as 24 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    Low: 10 °F

    Snow Likely
    and Blustery

  • Sunday

    Sunday: Sunny, with a high near 28. West wind 6 to 14 mph, with gusts as high as 21 mph.

    High: 28 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 11. Southwest wind 7 to 11 mph.

    Low: 11 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 37. Breezy.

    High: 37 °F

    Sunny and
    Breezy

  • Monday Night

    Monday Night: Partly cloudy, with a low around 21. Breezy.

    Low: 21 °F

    Partly Cloudy
    and Breezy

Detailed Forecast

Overnight
Mostly clear, with a steady temperature around 45. Breezy, with a southwest wind 17 to 20 mph, with gusts as high as 28 mph.
Friday
A 10 percent chance of rain after 5pm. Partly sunny, with a high near 53. Windy, with a southwest wind 22 to 31 mph, with gusts as high as 44 mph.
Friday Night
A chance of rain before 11pm, then a chance of rain and snow. Mostly cloudy, with a low around 36. Windy, with a southwest wind 21 to 26 mph, with gusts as high as 37 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.
Saturday
Partly sunny, with a high near 47. Windy, with a southwest wind 18 to 26 mph, with gusts as high as 37 mph.
Saturday Night
Snow likely. Mostly cloudy, with a low around 10. Blustery, with a north wind 7 to 17 mph, with gusts as high as 24 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Sunday
Sunny, with a high near 28. West wind 6 to 14 mph, with gusts as high as 21 mph.
Sunday Night
Mostly clear, with a low around 11. Southwest wind 7 to 11 mph.
Monday
Sunny, with a high near 37. Breezy.
Monday Night
Partly cloudy, with a low around 21. Breezy.
Tuesday
Partly sunny, with a high near 43. Breezy.
Tuesday Night
Partly cloudy, with a low around 25.
Wednesday
Mostly sunny, with a high near 48. Breezy.
Wednesday Night
Partly cloudy, with a low around 27.
New Year's Day
Partly sunny, with a high near 47. Breezy.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mills WY
 42.85°N 106.37°W (Elev. 5161 ft)
Last Update:
2:32 am MST Dec 26, 2025
Forecast Valid:
3am MST Dec 26, 2025-6pm MST Jan 1, 2026
 
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Additional Resources

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Chance of Precipitation