Hanna, WY Weather & Growing Conditions
Today
70°F
Areas Of Smoke then Sunny
Areas of smoke before noon. Sunny, with a high near 70. West southwest wind 5 to 15 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 70°F | Areas Of Smoke then Sunny | 5 to 15 mph WSW | 0% |
| Tonight | 47°F | Mostly Clear | 5 to 20 mph NE | 1% |
| Wednesday | 74°F | Sunny | 5 to 15 mph WSW | 0% |
| Wednesday Night | 50°F | Mostly Clear | 5 to 15 mph SW | 0% |
| Thursday | 78°F | Sunny | 5 to 15 mph W | 0% |
| Thursday Night | 55°F | Mostly Clear | 5 to 15 mph E | 0% |
| Friday | 82°F | Sunny | 5 to 15 mph WSW | 0% |
| Friday Night | 58°F | Mostly Clear | 5 to 15 mph SSW | 0% |
| Saturday | 82°F | Sunny | 10 to 20 mph WSW | 0% |
| Saturday Night | 60°F | Partly Cloudy | 5 to 15 mph SE | 0% |
| Sunday | 82°F | Sunny | 5 to 15 mph WSW | 3% |
| Sunday Night | 59°F | Partly Cloudy | 5 to 15 mph S | 4% |
| Monday | 81°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 5 to 15 mph WSW | 15% |
| Monday Night | 58°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 5 to 15 mph ESE | 22% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Hanna, WY
Last spring frost
May 20
First fall frost
Sep 28
Growing season
128 days
Hardiness zone
5a
Explore more for Hanna, WY: full frost dates · planting calendar · Wyoming frost dates
Climate data from the nearest NOAA station, Leo 6 Sw, Wy (12.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.