Hidden Lake, CO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Hidden Lake, a community in Boulder County, Colorado.
This Afternoon
45°F
Sunny
Sunny. High near 45, with temperatures falling to around 36 in the afternoon. Southwest wind around 2 mph.
7-day forecast for Hidden Lake
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 45°F | Sunny | 2 mph SW | 1% |
| Tonight | 27°F | Mostly Clear | 1 to 5 mph WSW | 1% |
| Wednesday | 44°F | Partly Sunny then Slight Chance Snow Showers | 1 to 6 mph ENE | 23% |
| Wednesday Night | 26°F | Slight Chance Snow Showers then Mostly Cloudy | 3 mph NW | 23% |
| Thursday | 50°F | Sunny | 1 to 5 mph SSE | 0% |
| Thursday Night | 30°F | Partly Cloudy | 3 mph WSW | 1% |
| Friday | 47°F | Slight Chance Snow Showers | 1 to 5 mph W | 18% |
| Friday Night | 27°F | Slight Chance Snow Showers then Partly Cloudy | 2 to 7 mph W | 18% |
| Saturday | 50°F | Sunny | 1 to 9 mph WNW | 3% |
| Saturday Night | 29°F | Mostly Clear | 1 to 6 mph W | 1% |
| Sunday | 58°F | Sunny | 2 to 9 mph W | 0% |
| Sunday Night | 36°F | Mostly Clear | 9 mph W | 0% |
| Monday | 57°F | Mostly Sunny | 2 to 8 mph WNW | 0% |
| Monday Night | 35°F | Mostly Cloudy | 2 to 6 mph W | 0% |
Forecast source: National Weather Service (api.weather.gov) for Hidden Lake (40.105, -105.478). Updated through the day.
Growing snapshot for Hidden Lake
Last spring frost
Jun 21
First fall frost
Sep 2
Growing season
71 days
Hardiness zone
5b
More local growing data for Hidden Lake: nearby ZIP 80455 weather · frost dates · planting calendar · Colorado frost dates
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Climate data from the nearest NOAA station, Boulder 14 W, Co (8.6 mi from Hidden Lake). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.