Kirby, WY Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Kirby, a town in Hot Springs County, Wyoming.
Today
80°F
Areas Of Smoke
Areas of smoke. Sunny, with a high near 80. North wind 1 to 9 mph.
7-day forecast for Kirby
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 80°F | Areas Of Smoke | 1 to 9 mph N | 0% |
| Tonight | 52°F | Areas Of Smoke | 2 to 12 mph NW | 2% |
| Wednesday | 88°F | Sunny | 1 to 12 mph SE | 0% |
| Wednesday Night | 55°F | Mostly Clear | 2 to 13 mph NW | 0% |
| Thursday | 95°F | Sunny | 1 to 8 mph SE | 0% |
| Thursday Night | 59°F | Mostly Clear | 2 to 8 mph NW | 0% |
| Friday | 100°F | Sunny | 1 to 8 mph NE | 0% |
| Friday Night | 62°F | Mostly Clear | 10 mph WNW | 0% |
| Saturday | 98°F | Sunny | 5 to 8 mph NNW | 0% |
| Saturday Night | 62°F | Mostly Clear | 5 to 8 mph NW | 0% |
| Sunday | 98°F | Sunny | 3 to 8 mph NW | 5% |
| Sunday Night | 61°F | Partly Cloudy | 5 to 8 mph WNW | 1% |
| Monday | 96°F | Sunny | 5 to 8 mph NNW | 3% |
| Monday Night | 61°F | Partly Cloudy | 5 to 10 mph NW | 6% |
Forecast source: National Weather Service (api.weather.gov) for Kirby (43.803, -108.181). Updated through the day.
Growing snapshot for Kirby
Last spring frost
May 24
First fall frost
Sep 16
Growing season
112 days
Hardiness zone
4b
More local growing data for Kirby: nearby ZIP 82430 weather · frost dates · planting calendar · Wyoming frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Thermopolis 9Ne, Wy (4 mi from Kirby). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.