Hanna, WY Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Hanna, a town in Carbon County, Wyoming.
Tonight
49°F
Mostly Cloudy
Mostly cloudy, with a low around 49. Southwest wind 5 to 10 mph. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Hanna
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 49°F | Mostly Cloudy | 5 to 10 mph SW | 10% |
| Saturday | 62°F | Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms | 5 to 15 mph WSW | 20% |
| Saturday Night | 41°F | Chance Showers And Thunderstorms then Partly Cloudy | 5 to 15 mph SW | 25% |
| Sunday | 60°F | Mostly Sunny | 10 to 15 mph W | 0% |
| Sunday Night | 38°F | Partly Cloudy | 0 to 10 mph SW | 4% |
| Monday | 68°F | Sunny | 5 to 10 mph WSW | 1% |
| Monday Night | 41°F | Mostly Clear | 5 mph SE | 0% |
| Tuesday | 72°F | Mostly Sunny | 5 to 10 mph SW | 2% |
| Tuesday Night | 45°F | Slight Chance Showers And Thunderstorms | 5 mph SSW | 18% |
| Wednesday | 70°F | Mostly Sunny | 5 to 15 mph WSW | 13% |
| Wednesday Night | 45°F | Partly Cloudy | 5 to 10 mph SW | 4% |
| Thursday | 73°F | Mostly Sunny | 5 to 10 mph WSW | 2% |
| Thursday Night | 46°F | Partly Cloudy | 5 to 10 mph ESE | 12% |
| Friday | 74°F | Mostly Sunny | 5 to 10 mph SW | 10% |
Forecast source: National Weather Service (api.weather.gov) for Hanna (41.870, -106.560). Updated through the day.
Growing snapshot for Hanna
Last spring frost
May 28
First fall frost
Sep 13
Growing season
108 days
Hardiness zone
5a
More local growing data for Hanna: nearby ZIP 82324 weather · frost dates · planting calendar · Wyoming frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Elk Mtn, Wy (2.1 mi from Hanna). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.