Allenspark, CO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Allenspark, a community in Boulder County, Colorado.
This Afternoon
68°F
Showers And Thunderstorms Likely
Showers and thunderstorms likely. Mostly cloudy. High near 68, with temperatures falling to around 58 in the afternoon. South southwest wind around 3 mph. Chance of precipitation is 70%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Allenspark
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 68°F | Showers And Thunderstorms Likely | 3 mph SSW | 69% |
| Tonight | 45°F | Chance Showers And Thunderstorms then Partly Cloudy | 2 to 6 mph W | 28% |
| Saturday | 62°F | Slight Chance Rain Showers then Chance Showers And Thunderstorms | 6 mph WSW | 68% |
| Saturday Night | 43°F | Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 2 mph WSW | 32% |
| Sunday | 59°F | Slight Chance Rain Showers then Chance Showers And Thunderstorms | 2 to 6 mph WNW | 25% |
| Sunday Night | 41°F | Slight Chance Rain Showers then Partly Cloudy | 2 mph WNW | 17% |
| Monday | 61°F | Mostly Sunny | 0 to 5 mph S | 5% |
| Monday Night | 45°F | Partly Cloudy | 3 mph SSW | 7% |
| Tuesday | 65°F | Mostly Sunny then Chance Showers And Thunderstorms | 3 mph SSW | 37% |
| Tuesday Night | 46°F | Chance Rain Showers then Mostly Cloudy | 3 mph WSW | 27% |
| Wednesday | 64°F | Partly Sunny then Chance Showers And Thunderstorms | 5 mph SSW | 38% |
| Wednesday Night | 47°F | Slight Chance Rain Showers then Mostly Cloudy | 2 mph SW | 19% |
| Thursday | 63°F | Partly Sunny then Chance Showers And Thunderstorms | 5 mph SSE | 27% |
| Thursday Night | 48°F | Slight Chance Rain Showers then Mostly Cloudy | 3 mph SSW | 22% |
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 Sep 19, 2026.