Greybull, WY Weather & Growing Conditions
Tonight
27°F
Mostly Clear then Areas Of Fog
Areas of fog after 2am. Mostly clear. Low around 27, with temperatures rising to around 31 overnight. East southeast wind 1 to 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 27°F | Mostly Clear then Areas Of Fog | 1 to 5 mph ESE | 0% |
| Wednesday | 51°F | Widespread Fog then Mostly Sunny | 3 mph NW | 0% |
| Wednesday Night | 28°F | Partly Cloudy | 3 mph ESE | 0% |
| Thursday | 56°F | Sunny | 1 to 5 mph S | 0% |
| Thursday Night | 29°F | Partly Cloudy | 2 mph NW | 0% |
| Friday | 54°F | Sunny | 1 to 6 mph SSE | 2% |
| Friday Night | 29°F | Mostly Clear | 3 mph SE | 5% |
| Saturday | 57°F | Sunny | 5 mph SE | 0% |
| Saturday Night | 31°F | Mostly Clear | 6 mph SE | 0% |
| Sunday | 63°F | Sunny | 3 to 9 mph SE | 0% |
| Sunday Night | 34°F | Partly Cloudy | 3 mph S | 0% |
| Monday | 61°F | Mostly Sunny | 3 mph S | 0% |
| Monday Night | 34°F | Partly Cloudy | 2 mph SE | 0% |
| Tuesday | 63°F | Mostly Sunny | 3 mph SSW | 3% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Greybull, WY
Last spring frost
May 11
First fall frost
Sep 23
Growing season
133 days
Hardiness zone
4b
Explore more for Greybull, WY: full frost dates · planting calendar · Wyoming frost dates
Climate data from the nearest NOAA station, Greybull, Wy (2.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.