Pine Brook Hill Weather -- Boulder County, CO

Pine Brook Hill, CO -- Foothills Community Above North Boulder

A Boulder mailing address does not mean Boulder weather, and Pine Brook Hill is the clearest local proof. The community shares zip code 80304 with the flat residential streets of north Boulder, but sits roughly 1,000 feet above them on the foothills bench west of Broadway. Same zip, same five-minute drive, materially different day -- and the forecast written for the plains routinely misses it.

The community climbs the slopes off Linden Drive and Lee Hill Drive at about 6,400 feet, in the transition zone where the plains grassland gives way to continuous ponderosa forest. Locally the neighborhood is usually written as Pinebrook Hills; the census place name is Pine Brook Hill. Either way, the position is the same one that defines its weather: high enough to catch upslope snow that falls as rain in town, exposed enough to take the full force of west downslope wind, and steep enough that conditions vary street by street.

The practical differences show up first in winter. Upslope storms moving in from the east lift against this bench and drop measurably more snow here than at the Boulder Municipal Airport gauge, and the roads climb steeply enough that access can be the limiting factor rather than the accumulation itself. In summer, the elevation buys a few degrees of relief from plains heat and adds afternoon thunderstorm exposure that arrives earlier than it does over the city.

Fire Risk and History

Pine Brook Hill carries a high wildfire risk and is named directly in Boulder County's Community Wildfire Protection Plan as a private-property home-ignition-zone mitigation area, alongside Boulder Heights, Carriage Hills, Buckingham Hills, and Wagonwheel Gap. That listing is not abstract: it reflects continuous forest fuel running up to structures on steep terrain with narrow, winding egress.

The 2010 Fourmile Canyon Fire is the nearest demonstration. Boulder County's burned-area report places the fire's northern extent in the Lee Hill area -- the same drainage system this community sits above -- after it burned 6,179 acres and destroyed 166 homes in a single week. The fuel type and slope profile here are the ones that fire moved through.

Elevation and Microclimate

At 6,400 feet Pine Brook Hill sits about 1,000 feet above central Boulder and well below the Peak to Peak communities further west. That intermediate band produces the county's most variable snow line -- storms that deliver rain in town and heavy wet snow at Nederland frequently deposit the messiest mix right here. South-facing slopes clear within a day while north-facing driveways hold ice for weeks. UV exposure runs meaningfully stronger than on the plains below.

Flood Zone Information

Pine Brook Hill's parcels are largely designated FEMA Flood Zone X, reflecting the absence of a mapped floodplain on this elevated bench. As with all steep foothills terrain, the real water hazard is not riverine flooding but rapid drainage response and debris flow after intense rainfall, particularly on burn-scarred slopes. The September 2013 flood caused significant damage in the canyons north and west of here. Parcel designations can be confirmed at the Flood Map Service Center.

Nearby Weather Pages

• 80304 zip weather -- the plains half of the same zip code, 1,000 feet lower
• North Boulder weather -- the residential grid directly below the bench
• Sugarloaf weather -- next foothills community southwest, inside the Fourmile burn area

References

• 2024 Boulder County Community Wildfire Protection Plan
• Fourmile Canyon Fire Emergency Stabilization Burned Area Report -- Boulder County
• FEMA Flood Map Service Center