Valmont, CO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Valmont, a community in Boulder County, Colorado.
Tonight
54°F
Partly Cloudy
Partly cloudy, with a low around 54. West wind around 3 mph. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Valmont
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 54°F | Partly Cloudy | 3 mph W | 5% |
| Saturday | 76°F | Slight Chance Rain Showers then Chance Showers And Thunderstorms | 1 to 6 mph NW | 65% |
| Saturday Night | 49°F | Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 0 to 3 mph W | 47% |
| Sunday | 71°F | Chance Showers And Thunderstorms | 0 to 3 mph NE | 48% |
| Sunday Night | 48°F | Chance Rain Showers then Partly Cloudy | 0 to 3 mph NNW | 33% |
| Monday | 73°F | Sunny | 0 to 5 mph ENE | 3% |
| Monday Night | 50°F | Mostly Clear | 0 to 3 mph N | 8% |
| Tuesday | 76°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph NE | 22% |
| Tuesday Night | 52°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 0 to 3 mph NW | 20% |
| Wednesday | 77°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph NE | 22% |
| Wednesday Night | 52°F | Slight Chance Rain Showers then Mostly Cloudy | 3 mph SW | 19% |
| Thursday | 78°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 1 to 5 mph NNE | 17% |
| Thursday Night | 53°F | Chance Rain Showers then Mostly Cloudy | 0 to 3 mph SSW | 27% |
| Friday | 79°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph ENE | 19% |
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 Sep 19, 2026.