Alta, WY Weather & Growing Conditions
This Afternoon
43°F
Mostly Sunny
Mostly sunny. High near 43, with temperatures falling to around 37 in the afternoon. North wind around 3 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 43°F | Mostly Sunny | 3 mph N | 0% |
| Tonight | 27°F | Mostly Clear | 5 mph SE | 0% |
| Thursday | 40°F | Partly Sunny then Scattered Rain And Snow Showers | 3 to 7 mph SW | 30% |
| Thursday Night | 29°F | Isolated Rain And Snow Showers then Mostly Cloudy | 1 to 5 mph SW | 20% |
| Friday | 37°F | Mostly Sunny | 1 to 5 mph SW | 2% |
| Friday Night | 27°F | Partly Cloudy | 2 mph S | 0% |
| Saturday | 44°F | Sunny | 2 mph S | 0% |
| Saturday Night | 31°F | Mostly Clear | 2 to 7 mph ESE | 0% |
| Sunday | 49°F | Sunny | 7 mph S | 1% |
| Sunday Night | 34°F | Partly Cloudy | 7 mph SSE | 1% |
| Monday | 49°F | Mostly Sunny | 7 mph S | 2% |
| Monday Night | 35°F | Mostly Cloudy | 6 mph SSE | 2% |
| Tuesday | 46°F | Mostly Sunny | 5 mph SSW | 4% |
| Tuesday Night | 35°F | Partly Cloudy | 5 mph S | 9% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Alta, WY
Last spring frost
Jun 14
First fall frost
Sep 11
Growing season
85 days
Hardiness zone
5a
Explore more for Alta, WY: full frost dates · planting calendar · Wyoming frost dates
Climate data from the nearest NOAA station, Alta 1 Nnw, Wy (7.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 5, 2026.