Altona, Colorado Weather
Altona, Colorado — live current conditions, hourly and 7-day forecasts, NWS alerts, aviation weather, radar and satellite imagery, soil and crop conditions for Altona, Boulder County.
Flight conditions near Altona. Data source: locating…
Soil conditions, frost risk and crop weather for Altona.
About Altona, Colorado
Altona rests in a shallow basin, where the foothills of the Rockies begin their slow, granite-boned ascent. It lies 8.2 miles north of Boulder, CO (from Boulder, CO: bearing 356°T), and is situated 9.8 miles west-south-west of Longmont. The land here is a patchwork of golden grasses, punctuated by the sturdy, dark green of ponderosa pines that cling to the slopes. A gentle breeze often whispers through the cottonwood trees lining the intermittent creek beds, carrying the dry, sun-baked scent of sagebrush. The sky above is vast, a canvas that shifts from the pale blue of morning to the bruised purples and oranges of sunset, painting the landscape in ever-changing hues. Life in Altona unfolds with a quiet, deliberate grace, a stark contrast to the bustling energy of the cities further east. The history of Altona is deeply entwined with the agricultural bounty of the surrounding plains, a legacy still visible in the weathered barns and the patient fields of alfalfa. For generations, this land sustained ranchers and farmers, their lives dictated by the seasons and the flow of the nearby rivers. While the boom and bust cycles of mining have largely bypassed this particular valley, the spirit of self-reliance and connection to the land remains a defining characteristic of Altona. The small, independent businesses that dot the main thoroughfare speak to a local economy built on hard work and community support, a quiet resilience that echoes through the years.
Live animated radar for Altona and surroundings — RainViewer.
NOAA GOES-16 GEOCOLOR — live animated loop updated every 10 minutes. Shows cloud cover, storm systems and weather patterns across the continental US.
Source: NOAA/NESDIS GOES-East · Public domain · Auto-updates on page reload
| Location | Altona, Boulder County, Colorado |
| Coordinates | 40.133874°N, 105.282768°W |
| Timezone | Mountain Time (America/Denver) |
| ZIP Code(s) | 80302 |
| Area Code | 303, 720 |
| Page generated | July 2026 |
| Weather data | Open-Meteo (open-source), NOAA National Weather Service |
About This Altona, Colorado Weather Page
This page provides live weather conditions and forecasts for Altona, Colorado, including current conditions, a 24-hour hourly forecast, 7-day outlook, NWS extended text forecast, real-time aviation weather (live METAR and TAF reports from the nearest reporting airport, with a modeled estimate shown when no station is in range), precipitation radar and NOAA GOES-16 satellite imagery. Additional sections may include tide predictions, wave height, wave direction and sea-surface temperature, a barometric pressure trend, and a solunar-based fishing forecast with a fishing-conditions rating for coastal localities, and soil temperature, crop weather and live USGS river gauge data for agricultural areas near a monitored waterway. All data updates automatically on every page visit.
Location data for Altona includes coordinates 40.133874°N, 105.282768°W, situated in Boulder County. ZIP code 80302. Telephone area code: 303, 720. Timezone: Mountain Time (America/Denver).
Weather data is sourced from the NOAA National Weather Service (NWS) and the open-source Open-Meteo API. Aviation data is sourced from aviationweather.gov (NOAA), with a modeled estimate used where no nearby reporting station is available. River and stream data is sourced from the USGS National Water Information System. Tide predictions are sourced from NOAA CO-OPS; marine and solunar data are modeled from Open-Meteo and public sunrise/moon calculations and should be treated as a general guide alongside on-the-water conditions. Radar is provided by RainViewer. Satellite imagery is sourced from NOAA/NESDIS GOES-East and is public domain.
