National Weather Service Forecast for: Gillette WY
Issued by: National Weather Service Rapid City, SD
Updated: 9:37 pm MST Dec 4, 2025
 
Overnight

Overnight: A 30 percent chance of snow, mainly after 2am. Mostly cloudy, with a low around 27. Wind chill values as low as 19. West wind around 10 mph, with gusts as high as 21 mph.
Chance Snow

 Friday

Friday: A 40 percent chance of snow, mainly before 11am. Cloudy, then gradually becoming mostly sunny, with a high near 34. Wind chill values as low as 17. Northwest wind 6 to 14 mph, with gusts as high as 23 mph. New snow accumulation of less than a half inch possible.
Chance Snow

 Friday
Night
Friday Night: Mostly cloudy, with a temperature rising to around 29 by 5am. Wind chill values as low as 12. South wind 7 to 13 mph becoming west after midnight. Winds could gust as high as 22 mph.
Mostly Cloudy

 Saturday

Saturday: A 20 percent chance of snow before 11am. Mostly cloudy, with a high near 35. Wind chill values as low as 20. Northwest wind 10 to 15 mph, with gusts as high as 24 mph.
Slight Chance
Snow then
Partly Sunny
 Saturday
Night
Saturday Night: Mostly cloudy, with a low around 18. West wind 6 to 8 mph, with gusts as high as 16 mph.
Mostly Cloudy

 Sunday

Sunday: Mostly sunny, with a high near 38. West wind 8 to 10 mph, with gusts as high as 20 mph.
Mostly Sunny

 Sunday
Night
Sunday Night: Mostly cloudy, with a low around 24. Southwest wind 9 to 13 mph, with gusts as high as 21 mph.
Mostly Cloudy

 Monday

Monday: Mostly sunny, with a high near 41. West wind 11 to 15 mph, with gusts as high as 24 mph.
Mostly Sunny

 Monday
Night
Monday Night: Mostly cloudy, with a low around 25.
Mostly Cloudy
Lo 27 °F Hi 34 °F Lo 25 °F⇑ Hi 35 °F Lo 18 °F Hi 38 °F Lo 24 °F Hi 41 °F Lo 25 °F

 

Overnight
 
 A 30 percent chance of snow, mainly after 2am. Mostly cloudy, with a low around 27. Wind chill values as low as 19. West wind around 10 mph, with gusts as high as 21 mph.
Friday
 
 A 40 percent chance of snow, mainly before 11am. Cloudy, then gradually becoming mostly sunny, with a high near 34. Wind chill values as low as 17. Northwest wind 6 to 14 mph, with gusts as high as 23 mph. New snow accumulation of less than a half inch possible.
Friday Night
 
 Mostly cloudy, with a temperature rising to around 29 by 5am. Wind chill values as low as 12. South wind 7 to 13 mph becoming west after midnight. Winds could gust as high as 22 mph.
Saturday
 
 A 20 percent chance of snow before 11am. Mostly cloudy, with a high near 35. Wind chill values as low as 20. Northwest wind 10 to 15 mph, with gusts as high as 24 mph.
Saturday Night
 
 Mostly cloudy, with a low around 18. West wind 6 to 8 mph, with gusts as high as 16 mph.
Sunday
 
 Mostly sunny, with a high near 38. West wind 8 to 10 mph, with gusts as high as 20 mph.
Sunday Night
 
 Mostly cloudy, with a low around 24. Southwest wind 9 to 13 mph, with gusts as high as 21 mph.
Monday
 
 Mostly sunny, with a high near 41. West wind 11 to 15 mph, with gusts as high as 24 mph.
Monday Night
 
 Mostly cloudy, with a low around 25.
Tuesday
 
 A slight chance of rain after 11am. Mostly cloudy, with a high near 46. Breezy.
Tuesday Night
 
 A chance of rain and snow. Mostly cloudy, with a low around 26.
Wednesday
 
 A chance of snow. Mostly cloudy, with a high near 38.
Wednesday Night
 
 A chance of rain and snow. Mostly cloudy, with a low around 24.
Thursday
 
 A slight chance of snow. Partly sunny, with a high near 41.

 

Forecast from NOAA-NWS for Gillette WY.