Allenspark, CO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Allenspark, a community in Boulder County, Colorado.
Tonight
23°F
Partly Cloudy
Partly cloudy, with a low around 23. West wind around 3 mph.
7-day forecast for Allenspark
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 23°F | Partly Cloudy | 3 mph W | 2% |
| Wednesday | 45°F | Partly Sunny then Slight Chance Rain And Snow Showers | 0 to 5 mph E | 16% |
| Wednesday Night | 22°F | Slight Chance Snow Showers then Mostly Cloudy | 2 mph NW | 17% |
| Thursday | 49°F | Sunny | 0 to 3 mph S | 0% |
| Thursday Night | 26°F | Partly Cloudy | 2 mph WSW | 1% |
| Friday | 47°F | Slight Chance Rain And Snow Showers | 3 mph WSW | 18% |
| Friday Night | 23°F | Slight Chance Snow Showers then Partly Cloudy | 2 to 10 mph W | 18% |
| Saturday | 51°F | Sunny | 1 to 12 mph WSW | 3% |
| Saturday Night | 25°F | Mostly Clear | 2 to 9 mph W | 1% |
| Sunday | 58°F | Sunny | 3 to 13 mph W | 0% |
| Sunday Night | 33°F | Mostly Clear | 9 to 14 mph W | 0% |
| Monday | 57°F | Mostly Sunny | 2 to 13 mph WNW | 0% |
| Monday Night | 32°F | Partly Cloudy | 2 to 9 mph W | 0% |
| Tuesday | 55°F | Mostly Sunny | 3 to 10 mph W | 7% |
Forecast source: National Weather Service (api.weather.gov) for Allenspark (40.231, -105.518). Updated through the day.
Growing snapshot for Allenspark
Last spring frost
Jun 14
First fall frost
Sep 12
Growing season
92 days
Hardiness zone
5b
More local growing data for Allenspark: nearby ZIP 80510 weather · frost dates · planting calendar · Colorado frost dates
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Climate data from the nearest NOAA station, Allenspark 3Nw, Co (4.8 mi from Allenspark). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.