Powder Horn, WY Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Powder Horn, a community in Sheridan County, Wyoming.
Today
77°F
Patchy Smoke
Patchy smoke. Sunny, with a high near 77. East wind 1 to 6 mph.
7-day forecast for Powder Horn
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 77°F | Patchy Smoke | 1 to 6 mph E | 3% |
| Tonight | 50°F | Patchy Smoke | 1 to 7 mph WSW | 15% |
| Wednesday | 85°F | Sunny | 1 to 6 mph NNE | 0% |
| Wednesday Night | 54°F | Mostly Clear | 2 to 6 mph WSW | 0% |
| Thursday | 94°F | Sunny | 0 to 8 mph N | 1% |
| Thursday Night | 58°F | Mostly Clear | 3 to 7 mph W | 0% |
| Friday | 99°F | Sunny | 0 to 7 mph N | 0% |
| Friday Night | 61°F | Mostly Clear | 8 mph W | 0% |
| Saturday | 97°F | Sunny | 6 to 14 mph NNW | 1% |
| Saturday Night | 61°F | Mostly Clear | 3 to 8 mph WSW | 0% |
| Sunday | 95°F | Sunny | 5 to 10 mph NW | 4% |
| Sunday Night | 62°F | Partly Cloudy | 3 to 7 mph NW | 3% |
| Monday | 93°F | Sunny | 3 to 10 mph N | 6% |
| Monday Night | 61°F | Partly Cloudy | 3 to 9 mph ESE | 14% |
Forecast source: National Weather Service (api.weather.gov) for Powder Horn (44.691, -106.973). Updated through the day.
Growing snapshot for Powder Horn
Last spring frost
May 24
First fall frost
Sep 23
Growing season
120 days
Hardiness zone
5a
More local growing data for Powder Horn: nearby ZIP 82842 weather · frost dates · planting calendar · Wyoming frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Story, Wy (1.7 mi from Powder Horn). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.