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.
Tonight
54°F
Partly Cloudy
Partly cloudy, with a low around 54. West wind around 5 mph. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Pine Brook Hill
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 54°F | Partly Cloudy | 5 mph W | 5% |
| Saturday | 70°F | Slight Chance Rain Showers then Chance Showers And Thunderstorms | 1 to 5 mph WNW | 68% |
| Saturday Night | 51°F | Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 2 mph WNW | 44% |
| Sunday | 66°F | Chance Showers And Thunderstorms | 3 mph NE | 41% |
| Sunday Night | 50°F | Chance Rain Showers then Partly Cloudy | 2 mph NNW | 32% |
| Monday | 67°F | Sunny | 0 to 6 mph NE | 5% |
| Monday Night | 51°F | Mostly Clear | 2 mph N | 7% |
| Tuesday | 71°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 to 3 mph ENE | 31% |
| Tuesday Night | 53°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 2 mph W | 21% |
| Wednesday | 72°F | Partly Sunny then Chance Showers And Thunderstorms | 0 to 3 mph NNE | 31% |
| Wednesday Night | 53°F | Slight Chance Rain Showers then Mostly Cloudy | 2 mph SSW | 20% |
| Thursday | 71°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 1 to 5 mph ESE | 20% |
| Thursday Night | 54°F | Chance Rain Showers then Mostly Cloudy | 2 mph SW | 27% |
| Friday | 73°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph NNE | 23% |
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 Sep 19, 2026.