Hidden Lake, CO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Hidden Lake, a community in Boulder County, Colorado.
Overnight
47°F
Patchy Smoke
Patchy smoke and a slight chance of rain showers. Mostly cloudy. Low around 47, with temperatures rising to around 49 overnight. East southeast wind around 3 mph. Chance of precipitation is 20%.
7-day forecast for Hidden Lake
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 47°F | Patchy Smoke | 3 mph ESE | 15% |
| Tuesday | 67°F | Patchy Smoke | 3 to 7 mph SE | 21% |
| Tuesday Night | 48°F | Patchy Smoke | 2 to 6 mph SSW | 15% |
| Wednesday | 74°F | Mostly Sunny | 7 mph NW | 3% |
| Wednesday Night | 50°F | Mostly Clear | 2 to 6 mph W | 1% |
| Thursday | 79°F | Sunny | 6 mph NW | 2% |
| Thursday Night | 54°F | Clear | 6 mph WNW | 1% |
| Friday | 81°F | Sunny | 6 mph NNE | 0% |
| Friday Night | 57°F | Mostly Clear | 3 to 7 mph SSW | 0% |
| Saturday | 83°F | Mostly Sunny | 3 to 7 mph NNW | 6% |
| Saturday Night | 59°F | Partly Cloudy | 5 mph WNW | 1% |
| Sunday | 82°F | Sunny | 5 mph NNW | 11% |
| Sunday Night | 59°F | Partly Cloudy | 6 mph WNW | 10% |
| Monday | 80°F | Slight Chance Rain Showers then Chance Showers And Thunderstorms | 6 mph WNW | 47% |
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 Aug 4, 2026.