Hidden Lake, CO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Hidden Lake, a community in Boulder County, Colorado.
Tonight
44°F
Slight Chance Showers And Thunderstorms then Partly Cloudy
A slight chance of showers and thunderstorms before 9pm. Partly cloudy, with a low around 44. West wind around 6 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Hidden Lake
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 44°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 6 mph W | 18% |
| Saturday | 61°F | Slight Chance Rain Showers then Chance Showers And Thunderstorms | 6 mph WSW | 69% |
| Saturday Night | 41°F | Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 3 mph WSW | 35% |
| Sunday | 57°F | Chance Showers And Thunderstorms | 6 mph WNW | 27% |
| Sunday Night | 39°F | Slight Chance Rain Showers then Partly Cloudy | 3 mph NW | 21% |
| Monday | 59°F | Mostly Sunny | 2 to 6 mph SSE | 5% |
| Monday Night | 42°F | Partly Cloudy | 2 mph SW | 7% |
| Tuesday | 63°F | Mostly Sunny then Chance Showers And Thunderstorms | 3 mph SSE | 40% |
| Tuesday Night | 44°F | Chance Showers And Thunderstorms then Mostly Cloudy | 2 mph SW | 25% |
| Wednesday | 63°F | Partly Sunny then Chance Showers And Thunderstorms | 5 mph SSE | 41% |
| Wednesday Night | 44°F | Slight Chance Rain Showers then Mostly Cloudy | 2 mph SSW | 21% |
| Thursday | 63°F | Partly Sunny then Chance Showers And Thunderstorms | 5 mph N | 28% |
| Thursday Night | 46°F | Chance Rain Showers then Mostly Cloudy | 2 mph SSW | 25% |
| Friday | 64°F | Partly Sunny then Chance Showers And Thunderstorms | 1 to 5 mph SE | 30% |
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 Sep 19, 2026.