Boulder, WY Weather & Growing Conditions
Today
58°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Partly sunny. High near 58, with temperatures falling to around 55 in the afternoon. West northwest wind 5 to 9 mph. Chance of precipitation is 50%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 58°F | Chance Showers And Thunderstorms | 5 to 9 mph WNW | 45% |
| Tonight | 38°F | Chance Showers And Thunderstorms | 1 to 7 mph NE | 31% |
| Sunday | 58°F | Patchy Fog then Slight Chance Showers And Thunderstorms | 1 to 8 mph W | 14% |
| Sunday Night | 38°F | Partly Cloudy | 3 to 7 mph NE | 6% |
| Monday | 62°F | Sunny | 2 to 6 mph SSE | 0% |
| Monday Night | 40°F | Mostly Clear | 6 mph NNE | 0% |
| Tuesday | 66°F | Mostly Sunny | 3 to 7 mph SSE | 5% |
| Tuesday Night | 44°F | Chance Showers And Thunderstorms | 5 mph E | 39% |
| Wednesday | 64°F | Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms | 3 to 8 mph WNW | 22% |
| Wednesday Night | 42°F | Mostly Clear | 6 mph N | 3% |
| Thursday | 68°F | Sunny | 6 mph NW | 2% |
| Thursday Night | 44°F | Partly Cloudy | 6 mph E | 1% |
| Friday | 68°F | Mostly Sunny | 7 mph SE | 8% |
| Friday Night | 45°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 5 mph ESE | 14% |
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 Sep 19, 2026.