Allenspark, CO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Allenspark, a community in Boulder County, Colorado.
Today
69°F
Patchy Smoke
Patchy smoke before 3pm, then patchy smoke and a slight chance of showers and thunderstorms. Mostly sunny. High near 69, with temperatures falling to around 66 in the afternoon. Southeast wind 3 to 7 mph. Chance of precipitation is 20%.
7-day forecast for Allenspark
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 69°F | Patchy Smoke | 3 to 7 mph SE | 18% |
| Tonight | 49°F | Patchy Smoke | 1 to 6 mph S | 12% |
| Wednesday | 76°F | Sunny | 6 mph WSW | 3% |
| Wednesday Night | 52°F | Mostly Clear | 5 mph SW | 0% |
| Thursday | 81°F | Sunny | 5 mph NW | 2% |
| Thursday Night | 55°F | Clear | 5 mph NW | 1% |
| Friday | 83°F | Sunny | 5 mph NNE | 1% |
| Friday Night | 57°F | Mostly Clear | 3 to 8 mph WNW | 0% |
| Saturday | 84°F | Sunny | 5 to 8 mph NW | 7% |
| Saturday Night | 60°F | Partly Cloudy | 5 mph W | 1% |
| Sunday | 83°F | Mostly Sunny | 5 mph NW | 13% |
| Sunday Night | 61°F | Partly Cloudy | 7 mph WNW | 11% |
| Monday | 82°F | Slight Chance Rain Showers then Chance Showers And Thunderstorms | 7 mph SW | 49% |
| Monday Night | 59°F | Chance Showers And Thunderstorms then Mostly Cloudy | 6 mph WSW | 28% |
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 Aug 4, 2026.