Valmont, CO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Valmont, a community in Boulder County, Colorado.
Tonight
33°F
Partly Cloudy
Partly cloudy, with a low around 33. West wind around 2 mph.
7-day forecast for Valmont
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 33°F | Partly Cloudy | 2 mph W | 0% |
| Wednesday | 55°F | Partly Sunny | 0 to 5 mph NE | 11% |
| Wednesday Night | 34°F | Mostly Cloudy | 2 mph WNW | 11% |
| Thursday | 59°F | Sunny | 1 to 5 mph SSE | 0% |
| Thursday Night | 35°F | Partly Cloudy | 2 mph SW | 1% |
| Friday | 58°F | Mostly Sunny | 1 to 5 mph E | 12% |
| Friday Night | 34°F | Mostly Clear | 5 mph SW | 12% |
| Saturday | 60°F | Sunny | 1 to 6 mph S | 1% |
| Saturday Night | 34°F | Mostly Clear | 5 mph WSW | 1% |
| Sunday | 67°F | Sunny | 5 mph SSW | 0% |
| Sunday Night | 41°F | Mostly Clear | 3 to 8 mph W | 0% |
| Monday | 67°F | Mostly Sunny | 2 to 6 mph ENE | 0% |
| Monday Night | 40°F | Partly Cloudy | 2 mph WNW | 0% |
| Tuesday | 65°F | Mostly Sunny | 3 mph NE | 6% |
Forecast source: National Weather Service (api.weather.gov) for Valmont (40.034, -105.208). Updated through the day.
Growing snapshot for Valmont
Last spring frost
May 6
First fall frost
Oct 5
Growing season
151 days
Hardiness zone
6a
More local growing data for Valmont: nearby ZIP 80301 weather · frost dates · planting calendar · Colorado frost dates
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Climate data from the nearest NOAA station, Boulder, Co (5.1 mi from Valmont). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.