Altona, Colorado Weather
Altona, Colorado — live current conditions, hourly and 7-day forecasts, NWS alerts, radar and satellite imagery, soil and crop conditions for Altona, Boulder County.
Full aviation weather for Altona is published on the Vance Brand Airport (KLMO) page, 11 km away. It carries the current METAR decoded into plain language — surface wind, visibility, cloud layers and ceiling, temperature and dewpoint, and altimeter setting — alongside the raw observation as transmitted. 6 airfields within reach of Altona have their own pages, listed below.
The Terminal Aerodrome Forecast (TAF) is shown across its full validity period, with each change group broken out so you can see when conditions are expected to shift. Flight category is derived automatically — VFR, MVFR, IFR or LIFR — from reported ceiling and visibility, with runway details and field elevation alongside. Observations update roughly hourly and forecasts several times a day.
Other airports near Altona: Boulder Municipal Airport (KBDU) 12 km · Erie Municipal Airport (KEIK) 24 km · Rocky Mountain Metropolitan Airport (KBJC) 29 km · Northern Colorado Regional Airport (KFNL) 42 km · Platte Valley Airpark (K18V) 50 km
Conditions reported at KLMO describe the airfield itself. Weather 11 km away can differ, particularly in terrain or near the coast. For conditions at Altona specifically, see the current conditions and forecast above.
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 | September 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, precipitation radar and NOAA GOES-16 satellite imagery. Aviation weather — live METAR observations and TAF forecasts — is published separately on the pages for the nearest reporting airports, linked from the aviation section above. 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. 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.
