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

Heavy Rainfall Threat Continues in the Southwest on Monday; Record Warmth in the Plains and Midwest

Remnant moisture from Tropical Storm Rachel will persist over portions of the Great Basin and Southwest on Monday, bringing a potential heavy to excessive rainfall risk. Well above average and potentially record breaking temperatures will develop across the Plains and Midwest early this week, spreading into the Lower Mississippi Valley and Southeast midweek. Read More >

Current conditions at

Casper, Natrona County International Airport (KCPR)

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

Overcast

42°F

6°C

Humidity 78%
Wind Speed ENE 9 MPH
Barometer 29.97 in (1014.9 mb)
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Wind Chill37°F (3°C)
Last update 12 Oct 10:53 AM MDT
Extended Forecast for

Bar Nunn WY

  • Columbus Day

    Columbus Day: A 40 percent chance of showers, mainly after 5pm. Patchy fog. Otherwise, mostly sunny, with a high near 57. North wind 7 to 9 mph.

    High: 57 °F

    Chance
    Showers and
    Patchy Fog

  • Tonight

    Tonight: Showers and thunderstorms likely before 1am, then a chance of showers. Patchy fog before 10pm. Otherwise, mostly cloudy, with a low around 41. East northeast wind 5 to 11 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 41 °F

    Showers
    Likely and
    Patchy Fog

  • Tuesday

    Tuesday: A slight chance of showers before 8am, then a chance of showers after 4pm. Partly sunny, with a high near 61. Light north northwest wind becoming north 8 to 13 mph in the morning. Winds could gust as high as 21 mph. Chance of precipitation is 40%.

    High: 61 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: Showers and thunderstorms. Low around 36. Breezy, with a northeast wind 13 to 15 mph, with gusts as high as 22 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 36 °F

    Showers and
    Breezy

  • Wednesday

    Wednesday: Showers likely, mainly before noon. Mostly cloudy, with a high near 53. Breezy, with an east wind 11 to 15 mph, with gusts as high as 22 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 53 °F

    Showers
    Likely and
    Breezy

  • Wednesday Night

    Wednesday Night: Showers. Low around 34. East wind 8 to 11 mph becoming north after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 80%.

    Low: 34 °F

    Showers

  • Thursday

    Thursday: A 50 percent chance of showers before noon. Mostly sunny, with a high near 53. Breezy, with a north wind 13 to 21 mph, with gusts as high as 28 mph.

    High: 53 °F

    Breezy.
    Chance
    Showers then
    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 26.

    Low: 26 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 61.

    High: 61 °F

    Sunny

Detailed Forecast

Columbus Day
A 40 percent chance of showers, mainly after 5pm. Patchy fog. Otherwise, mostly sunny, with a high near 57. North wind 7 to 9 mph.
Tonight
Showers and thunderstorms likely before 1am, then a chance of showers. Patchy fog before 10pm. Otherwise, mostly cloudy, with a low around 41. East northeast wind 5 to 11 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday
A slight chance of showers before 8am, then a chance of showers after 4pm. Partly sunny, with a high near 61. Light north northwest wind becoming north 8 to 13 mph in the morning. Winds could gust as high as 21 mph. Chance of precipitation is 40%.
Tuesday Night
Showers and thunderstorms. Low around 36. Breezy, with a northeast wind 13 to 15 mph, with gusts as high as 22 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday
Showers likely, mainly before noon. Mostly cloudy, with a high near 53. Breezy, with an east wind 11 to 15 mph, with gusts as high as 22 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
Showers. Low around 34. East wind 8 to 11 mph becoming north after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 80%.
Thursday
A 50 percent chance of showers before noon. Mostly sunny, with a high near 53. Breezy, with a north wind 13 to 21 mph, with gusts as high as 28 mph.
Thursday Night
Mostly clear, with a low around 26.
Friday
Sunny, with a high near 61.
Friday Night
Clear, with a low around 34. Breezy.
Saturday
Sunny, with a high near 70. Windy.
Saturday Night
Mostly clear, with a low around 38. Breezy.
Sunday
Sunny, with a high near 69. Breezy.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Bar Nunn WY
 42.92°N 106.35°W (Elev. 5322 ft)
Last Update:
10:31 am MDT Oct 12, 2026
Forecast Valid:
11am MDT Oct 12, 2026-6pm MDT Oct 18, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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