National Weather Service Forecast for: Riverton WY
Issued by: National Weather Service Riverton, WY
Updated: 8:17 pm MDT Jun 18, 2026
 
Tonight

Tonight: Partly cloudy, with a low around 50. North northeast wind 6 to 13 mph, with gusts as high as 22 mph.
Partly Cloudy

 Juneteenth

Juneteenth: Sunny, with a high near 86. East wind 5 to 9 mph.
Sunny

 Friday
Night
Friday Night: Increasing clouds, with a low around 54. Breezy, with a northeast wind 11 to 16 mph becoming east northeast 5 to 10 mph after midnight. Winds could gust as high as 26 mph.
Partly Cloudy
and Breezy
then Mostly
Cloudy
 Saturday

Saturday: A 30 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 89. Breezy, with a light and variable wind becoming west 12 to 17 mph in the afternoon. Winds could gust as high as 28 mph.
Mostly Sunny
then Chance
Showers and
Breezy
 Saturday
Night
Saturday Night: A 50 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 51. Breezy, with a west northwest wind 6 to 15 mph, with gusts as high as 24 mph.
Chance
Showers and
Breezy then
Partly Cloudy
 Sunday

Sunday: A slight chance of showers, then a chance of showers and thunderstorms after noon. Mostly sunny, with a high near 81. West wind 5 to 8 mph becoming north northeast in the afternoon. Chance of precipitation is 40%.
Slight Chance
Showers then
Chance
T-storms
 Sunday
Night
Sunday Night: A 30 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 49. North northeast wind 8 to 11 mph.
Chance
Showers then
Partly Cloudy
 Monday

Monday: Sunny, with a high near 82.
Sunny

 Monday
Night
Monday Night: Mostly clear, with a low around 49. Breezy.
Mostly Clear
and Breezy
then Mostly
Clear
Lo 50 °F Hi 86 °F Lo 54 °F Hi 89 °F Lo 51 °F Hi 81 °F Lo 49 °F Hi 82 °F Lo 49 °F

 

Tonight
 
 Partly cloudy, with a low around 50. North northeast wind 6 to 13 mph, with gusts as high as 22 mph.
Juneteenth
 
 Sunny, with a high near 86. East wind 5 to 9 mph.
Friday Night
 
 Increasing clouds, with a low around 54. Breezy, with a northeast wind 11 to 16 mph becoming east northeast 5 to 10 mph after midnight. Winds could gust as high as 26 mph.
Saturday
 
 A 30 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 89. Breezy, with a light and variable wind becoming west 12 to 17 mph in the afternoon. Winds could gust as high as 28 mph.
Saturday Night
 
 A 50 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 51. Breezy, with a west northwest wind 6 to 15 mph, with gusts as high as 24 mph.
Sunday
 
 A slight chance of showers, then a chance of showers and thunderstorms after noon. Mostly sunny, with a high near 81. West wind 5 to 8 mph becoming north northeast in the afternoon. Chance of precipitation is 40%.
Sunday Night
 
 A 30 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 49. North northeast wind 8 to 11 mph.
Monday
 
 Sunny, with a high near 82.
Monday Night
 
 Mostly clear, with a low around 49. Breezy.
Tuesday
 
 Sunny, with a high near 85.
Tuesday Night
 
 Mostly clear, with a low around 52.
Wednesday
 
 Sunny, with a high near 89.
Wednesday Night
 
 Mostly clear, with a low around 53.
Thursday
 
 Sunny, with a high near 90.

 

Forecast from NOAA-NWS for Riverton WY.