Boulder, WY Weather & Growing Conditions
Today
43°F
Cloudy
Cloudy. High near 43, with temperatures falling to around 39 in the afternoon. Northwest wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 43°F | Cloudy | 5 mph NW | 2% |
| Tonight | 25°F | Mostly Clear | 3 to 8 mph N | 0% |
| Thursday | 43°F | Mostly Sunny | 2 to 7 mph NNW | 0% |
| Thursday Night | 27°F | Mostly Cloudy | 2 to 7 mph NW | 3% |
| Friday | 42°F | Sunny | 5 to 9 mph NW | 1% |
| Friday Night | 26°F | Mostly Clear | 7 mph NNW | 0% |
| Saturday | 46°F | Sunny | 1 to 5 mph NW | 0% |
| Saturday Night | 30°F | Mostly Clear | 3 mph N | 0% |
| Sunday | 49°F | Sunny | 5 mph NW | 0% |
| Sunday Night | 33°F | Partly Cloudy | 5 mph N | 0% |
| Monday | 50°F | Mostly Sunny | 3 mph NNW | 0% |
| Monday Night | 33°F | Partly Cloudy | 1 to 5 mph N | 0% |
| Tuesday | 49°F | Mostly Sunny | 6 mph NW | 1% |
| Tuesday Night | 32°F | Partly Cloudy | 6 mph NNW | 4% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Boulder, WY
Growing season
43 days
Hardiness zone
4a
Explore more for Boulder, WY: full frost dates · planting calendar · Wyoming frost dates
Climate data from the nearest NOAA station, Boulder Rearing Stn, Wy (16 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.