National Weather Service Forecast for: Gillette WY
Issued by: National Weather Service Rapid City, SD
Updated: 9:22 pm MST Dec 16, 2025
 
Tonight

Tonight: Mostly cloudy, with a low around 36. Breezy, with a southwest wind 14 to 19 mph increasing to 24 to 29 mph after midnight. Winds could gust as high as 40 mph.
Mostly Cloudy
then Partly
Cloudy and
Breezy
Wednesday

Wednesday: A 50 percent chance of rain, mainly after 11am.  Partly sunny, with a high near 54. Very windy, with a southwest wind 36 to 40 mph becoming northwest in the afternoon. Winds could gust as high as 55 mph.
Chance Rain
and Very
Windy
Wednesday
Night
Wednesday Night: A 20 percent chance of snow before 11pm.  Partly cloudy, with a low around 20. Wind chill values as low as 6. Very windy, with a northwest wind 34 to 40 mph, with gusts as high as 55 mph.
Slight Chance
Snow and Very
Windy
Thursday

Thursday: Partly sunny, with a high near 38. Wind chill values as low as 3. Breezy, with a northwest wind 24 to 29 mph becoming southwest 10 to 15 mph in the afternoon. Winds could gust as high as 39 mph.
Mostly Sunny
and Breezy
then Partly
Sunny
Thursday
Night
Thursday Night: Mostly cloudy, with a temperature rising to around 45 by 5am. Breezy, with a south wind 13 to 18 mph increasing to 19 to 24 mph after midnight. Winds could gust as high as 34 mph.
Mostly Cloudy
then Mostly
Cloudy and
Breezy
Friday

Friday: A 30 percent chance of rain after 5pm.  Mostly cloudy, with a high near 56. Breezy, with a southwest wind 17 to 24 mph, with gusts as high as 36 mph.
Breezy.
Mostly Cloudy
then Chance
Rain
Friday
Night
Friday Night: A chance of rain and snow before 8pm, then a chance of snow.  Mostly cloudy, with a low around 25. West wind 11 to 16 mph, with gusts as high as 26 mph.  Chance of precipitation is 30%.
Chance
Rain/Snow
then Chance
Snow
Saturday

Saturday: A slight chance of snow before 11am.  Partly sunny, with a high near 41. West wind 8 to 10 mph, with gusts as high as 17 mph.
Slight Chance
Snow then
Mostly Sunny
Saturday
Night
Saturday Night: Partly cloudy, with a low around 22.
Partly Cloudy

Lo 36 °F Hi 54 °F Lo 20 °F Hi 38 °F Lo 32 °F Hi 56 °F Lo 25 °F Hi 41 °F Lo 22 °F

High Wind Warning
Air Quality Alert
 

Tonight
 
Mostly cloudy, with a low around 36. Breezy, with a southwest wind 14 to 19 mph increasing to 24 to 29 mph after midnight. Winds could gust as high as 40 mph.
Wednesday
 
A 50 percent chance of rain, mainly after 11am. Partly sunny, with a high near 54. Very windy, with a southwest wind 36 to 40 mph becoming northwest in the afternoon. Winds could gust as high as 55 mph.
Wednesday Night
 
A 20 percent chance of snow before 11pm. Partly cloudy, with a low around 20. Wind chill values as low as 6. Very windy, with a northwest wind 34 to 40 mph, with gusts as high as 55 mph.
Thursday
 
Partly sunny, with a high near 38. Wind chill values as low as 3. Breezy, with a northwest wind 24 to 29 mph becoming southwest 10 to 15 mph in the afternoon. Winds could gust as high as 39 mph.
Thursday Night
 
Mostly cloudy, with a temperature rising to around 45 by 5am. Breezy, with a south wind 13 to 18 mph increasing to 19 to 24 mph after midnight. Winds could gust as high as 34 mph.
Friday
 
A 30 percent chance of rain after 5pm. Mostly cloudy, with a high near 56. Breezy, with a southwest wind 17 to 24 mph, with gusts as high as 36 mph.
Friday Night
 
A chance of rain and snow before 8pm, then a chance of snow. Mostly cloudy, with a low around 25. West wind 11 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 30%.
Saturday
 
A slight chance of snow before 11am. Partly sunny, with a high near 41. West wind 8 to 10 mph, with gusts as high as 17 mph.
Saturday Night
 
Partly cloudy, with a low around 22.
Sunday
 
Partly sunny, with a high near 45.
Sunday Night
 
Partly cloudy, with a low around 32.
Monday
 
Partly sunny, with a high near 56.
Monday Night
 
Mostly cloudy, with a low around 32.
Tuesday
 
Partly sunny, with a high near 55.

 

Forecast from NOAA-NWS for Gillette WY.