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.
Today
73°F
Patchy Smoke
Patchy smoke and a slight chance of rain showers before noon, then patchy smoke and a slight chance of showers and thunderstorms. Mostly sunny. High near 73, with temperatures falling to around 71 in the afternoon. East northeast wind around 7 mph. Chance of precipitation is 20%.
7-day forecast for Pine Brook Hill
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 73°F | Patchy Smoke | 7 mph ENE | 18% |
| Tonight | 56°F | Patchy Smoke | 2 to 7 mph N | 12% |
| Wednesday | 81°F | Patchy Smoke then Sunny | 2 to 7 mph NE | 2% |
| Wednesday Night | 59°F | Mostly Clear | 6 mph WSW | 1% |
| Thursday | 90°F | Sunny | 1 to 6 mph N | 1% |
| Thursday Night | 63°F | Clear | 6 mph NW | 1% |
| Friday | 92°F | Sunny | 1 to 6 mph SE | 0% |
| Friday Night | 67°F | Mostly Clear | 3 to 9 mph SSW | 0% |
| Saturday | 94°F | Sunny | 2 to 8 mph N | 4% |
| Saturday Night | 68°F | Partly Cloudy | 7 mph WNW | 1% |
| Sunday | 93°F | Sunny | 5 mph NNW | 9% |
| Sunday Night | 69°F | Partly Cloudy | 7 mph WNW | 5% |
| Monday | 91°F | Mostly Sunny then Chance Showers And Thunderstorms | 7 mph NNW | 36% |
| Monday Night | 68°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 6 mph W | 20% |
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 Aug 4, 2026.