St. Mary's, Colorado Weather
St. Mary's, Colorado — live current conditions, hourly and 7-day forecasts, NWS alerts, radar and satellite imagery, soil and crop conditions for St. Mary's, Clear Creek County.
Full aviation weather for St. Mary's is published on the Granby Grand County Airport (KGNB) page, 38 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. 5 airfields within reach of St. Mary's 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 St. Mary's: Boulder Municipal Airport (KBDU) 44 km · Rocky Mountain Metropolitan Airport (KBJC) 46 km · Erie Municipal Airport (KEIK) 56 km · Vance Brand Airport (KLMO) 56 km
Conditions reported at KGNB describe the airfield itself. Weather 38 km away can differ, particularly in terrain or near the coast. For conditions at St. Mary's specifically, see the current conditions and forecast above.
Soil conditions, frost risk and crop weather for St. Mary's.
About St. Mary's, Colorado
St. Mary's clings to the steep slopes of Clear Creek County, a collection of weathered buildings gathered in the shadow of towering, granite peaks. It lies 24.2 miles south-west of Boulder, CO (from Boulder, CO: bearing 236°T), and is situated 8.8 miles north-west of Idaho Springs. The air here is thin and sharp, carrying the scent of pine and damp earth, and the sunlight often filters through the high mountain passes in broad, golden shafts, illuminating the rugged landscape. Jagged ridgelines, cloaked in evergreen forests that turn a deep, bruised purple as dusk approaches, form a formidable backdrop to the modest dwellings. Clear Creek itself, a ribbon of churning, icy water, rushes through the valley floor, its constant murmur a counterpoint to the wind that sighs through the scattered aspens, their leaves a pale, shimmering green against the darker conifers. This is a place shaped by the earth's raw power and the relentless pursuit of its bounty. St. Mary's owes its existence to the rich veins of ore that lie hidden within these mountains, a legacy of a robust mining past that still echoes in the sturdy, unpretentious architecture and the weathered faces of its inhabitants. The local economy, once dominated by the clang of hammers and the rumble of ore carts, has diversified, with a resilient spirit that now embraces tourism and the quiet allure of high-country living. The remnants of old mining operations, rusting machinery half-swallowed by the encroaching wild, serve as stark, silent monuments to the generations who worked these unforgiving slopes, their stories etched into the very stone and soil of St. Mary's.
Live animated radar for St. Mary's 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 | St. Mary's, Clear Creek County, Colorado |
| Coordinates | 39.816654°N, 105.647502°W |
| Timezone | Mountain Time (America/Denver) |
| ZIP Code(s) | 80452 |
| Area Code | 303, 720 |
| Page generated | September 2026 |
| Weather data | Open-Meteo (open-source), NOAA National Weather Service |
About This St. Mary's, Colorado Weather Page
This page provides live weather conditions and forecasts for St. Mary's, 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 St. Mary's includes coordinates 39.816654°N, 105.647502°W, situated in Clear Creek County. ZIP code 80452. 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.
