Pine Brook Hill, CO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Pine Brook Hill, a community in Boulder County, Colorado.
This Afternoon
51°F
Sunny
Sunny. High near 51, with temperatures falling to around 45 in the afternoon. East wind around 2 mph.
7-day forecast for Pine Brook Hill
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 51°F | Sunny | 2 mph E | 0% |
| Tonight | 34°F | Mostly Clear | 2 mph SW | 0% |
| Wednesday | 50°F | Mostly Sunny then Slight Chance Rain Showers | 0 to 5 mph NE | 17% |
| Wednesday Night | 33°F | Slight Chance Rain Showers then Mostly Cloudy | 2 mph WNW | 15% |
| Thursday | 53°F | Sunny | 0 to 6 mph S | 0% |
| Thursday Night | 36°F | Partly Cloudy | 3 mph W | 1% |
| Friday | 53°F | Mostly Sunny then Slight Chance Rain Showers | 3 mph ESE | 15% |
| Friday Night | 35°F | Slight Chance Rain Showers then Mostly Clear | 3 to 7 mph SW | 15% |
| Saturday | 55°F | Sunny | 0 to 8 mph S | 2% |
| Saturday Night | 35°F | Mostly Clear | 1 to 5 mph W | 1% |
| Sunday | 63°F | Sunny | 2 to 7 mph SSW | 0% |
| Sunday Night | 44°F | Mostly Clear | 6 to 12 mph W | 0% |
| Monday | 63°F | Mostly Sunny | 0 to 8 mph NNE | 0% |
| Monday Night | 42°F | Partly Cloudy | 0 to 5 mph W | 0% |
Forecast source: National Weather Service (api.weather.gov) for Pine Brook Hill (40.038, -105.308). Updated through the day.
Growing snapshot for Pine Brook Hill
Last spring frost
May 6
First fall frost
Oct 5
Growing season
151 days
Hardiness zone
6a
More local growing data for Pine Brook Hill: nearby ZIP 80304 weather · frost dates · planting calendar · Colorado frost dates
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Climate data from the nearest NOAA station, Boulder, Co (3.8 mi from Pine Brook Hill). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.