Alta, WY Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Alta, a community in Teton County, Wyoming.
Overnight
46°F
Patchy Fog
Patchy fog and a slight chance of showers and thunderstorms before 3am, then patchy fog and a chance of showers and thunderstorms. Mostly cloudy, with a low around 46. Northeast wind around 1 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Alta
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 46°F | Patchy Fog | 1 mph NE | 33% |
| Saturday | 57°F | Patchy Fog then Chance Showers And Thunderstorms | 0 to 5 mph NW | 51% |
| Saturday Night | 38°F | Chance Showers And Thunderstorms then Patchy Fog | 0 to 3 mph NNE | 37% |
| Sunday | 60°F | Slight Chance Rain Showers then Mostly Sunny | 0 to 5 mph NW | 18% |
| Sunday Night | 39°F | Mostly Clear | 3 mph NNE | 0% |
| Monday | 69°F | Sunny | 1 to 5 mph SW | 0% |
| Monday Night | 44°F | Mostly Clear | 5 mph ENE | 0% |
| Tuesday | 71°F | Mostly Sunny | 5 mph SSW | 1% |
| Tuesday Night | 46°F | Partly Cloudy then Slight Chance Rain Showers | 5 mph ESE | 17% |
| Wednesday | 71°F | Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms | 5 mph SSW | 18% |
| Wednesday Night | 45°F | Mostly Clear | 5 mph SE | 3% |
| Thursday | 73°F | Sunny | 3 mph S | 4% |
| Thursday Night | 47°F | Partly Cloudy | 7 mph SSE | 2% |
| Friday | 74°F | Mostly Sunny | 8 mph S | 3% |
Forecast source: National Weather Service (api.weather.gov) for Alta (43.774, -111.031). Updated through the day.
Growing snapshot for Alta
Last spring frost
Jun 14
First fall frost
Sep 11
Growing season
85 days
Hardiness zone
5a
More local growing data for Alta: nearby ZIP 83414 weather · frost dates · planting calendar · Wyoming frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Alta 1 Nnw, Wy (7.8 mi from Alta). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.