Rock River, WY Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Rock River, a town in Albany County, Wyoming.
Today
78°F
Areas Of Smoke then Sunny
Areas of smoke before noon. Sunny, with a high near 78. East northeast wind 5 to 20 mph, with gusts as high as 30 mph.
7-day forecast for Rock River
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 78°F | Areas Of Smoke then Sunny | 5 to 20 mph ENE | 1% |
| Tonight | 48°F | Mostly Clear | 5 to 20 mph SE | 2% |
| Wednesday | 82°F | Sunny | 5 to 15 mph WNW | 1% |
| Wednesday Night | 50°F | Mostly Clear | 5 to 15 mph SW | 0% |
| Thursday | 86°F | Sunny | 5 to 15 mph W | 1% |
| Thursday Night | 54°F | Mostly Clear | 5 to 15 mph WSW | 0% |
| Friday | 90°F | Sunny | 5 to 15 mph W | 0% |
| Friday Night | 57°F | Mostly Clear | 5 to 15 mph SW | 0% |
| Saturday | 92°F | Sunny | 5 to 15 mph W | 0% |
| Saturday Night | 58°F | Mostly Clear | 5 to 15 mph WSW | 0% |
| Sunday | 92°F | Sunny | 5 to 15 mph W | 3% |
| Sunday Night | 59°F | Partly Cloudy | 5 to 15 mph SW | 5% |
| Monday | 91°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 5 to 10 mph WSW | 16% |
| Monday Night | 57°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 5 to 10 mph S | 22% |
Forecast source: National Weather Service (api.weather.gov) for Rock River (41.732, -105.975). Updated through the day.
Growing snapshot for Rock River
Last spring frost
Jun 1
First fall frost
Sep 8
Growing season
97 days
Hardiness zone
4b
More local growing data for Rock River: nearby ZIP 82083 weather · frost dates · planting calendar · Wyoming frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Medicine Bow, Wy (16.3 mi from Rock River). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.