Riverton, WY Weather & Growing Conditions
Today
82°F
Areas Of Smoke
Areas of smoke. Sunny, with a high near 82. East northeast wind around 9 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 82°F | Areas Of Smoke | 9 mph ENE | 0% |
| Tonight | 53°F | Areas Of Smoke | 3 to 14 mph NE | 2% |
| Wednesday | 89°F | Sunny | 6 mph SSE | 0% |
| Wednesday Night | 56°F | Mostly Clear | 5 to 8 mph W | 0% |
| Thursday | 94°F | Sunny | 6 mph WNW | 0% |
| Thursday Night | 60°F | Mostly Clear | 5 to 8 mph WSW | 0% |
| Friday | 97°F | Sunny | 3 to 9 mph W | 0% |
| Friday Night | 62°F | Mostly Clear | 8 to 13 mph W | 0% |
| Saturday | 98°F | Sunny | 8 mph WNW | 0% |
| Saturday Night | 63°F | Mostly Clear | 7 to 12 mph W | 0% |
| Sunday | 97°F | Sunny | 8 mph NW | 4% |
| Sunday Night | 63°F | Partly Cloudy | 8 to 13 mph WSW | 2% |
| Monday | 96°F | Sunny | 7 mph ENE | 3% |
| Monday Night | 63°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 8 to 12 mph NE | 11% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Riverton, WY
Last spring frost
May 12
First fall frost
Sep 24
Growing season
132 days
Hardiness zone
5a
Explore more for Riverton, WY: full frost dates · planting calendar · Wyoming frost dates
Climate data from the nearest NOAA station, Riverton, Wy (6.9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.