Kirby, WY Weather & Growing Conditions
This Afternoon
81°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Partly sunny. High near 81, with temperatures falling to around 78 in the afternoon. South southwest wind 2 to 7 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 81°F | Chance Showers And Thunderstorms | 2 to 7 mph SSW | 48% |
| Tonight | 51°F | Showers And Thunderstorms Likely | 2 to 7 mph S | 56% |
| Saturday | 69°F | Patchy Fog then Slight Chance Showers And Thunderstorms | 1 to 13 mph NNW | 69% |
| Saturday Night | 44°F | Showers And Thunderstorms | 2 to 14 mph NW | 89% |
| Sunday | 65°F | Chance Rain Showers | 2 to 6 mph NW | 49% |
| Sunday Night | 42°F | Partly Cloudy | 0 to 6 mph ESE | 5% |
| Monday | 73°F | Sunny | 3 mph SE | 0% |
| Monday Night | 45°F | Mostly Clear | 3 mph SSE | 0% |
| Tuesday | 79°F | Mostly Sunny | 3 mph SSE | 0% |
| Tuesday Night | 48°F | Slight Chance Showers And Thunderstorms | 3 mph NW | 20% |
| Wednesday | 80°F | Sunny | 5 mph SSE | 4% |
| Wednesday Night | 48°F | Mostly Clear | 3 mph SSE | 5% |
| Thursday | 82°F | Sunny | 5 mph SSW | 3% |
| Thursday Night | 49°F | Partly Cloudy | 3 mph SSE | 7% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Kirby, WY
Last spring frost
May 24
First fall frost
Sep 16
Growing season
112 days
Hardiness zone
4b
Explore more for Kirby, WY: full frost dates · planting calendar · Wyoming frost dates
Climate data from the nearest NOAA station, Thermopolis 9Ne, Wy (4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.