St. Mary's, CO Live Doppler Radar
Live radar for St. Mary's, Clear Creek County: every NWS radar combined, rain, snow and ice colors, flash-flood risk, storm tracks and official warnings.
What weather hits St. Mary's?
Since 1996, the National Weather Service has logged heavy snow or a winter storm on 203 days in the South and Southeast Grand/West Central and Southwest Boulder/Gilpin/Clear Creek/Summit/North and West Park Counties Above 9000 Feet forecast zone and Clear Creek County — the most common reported hazard around St. Mary's, mostly in April and December. Next come high winds (81 days) and avalanches (32 days).
| Hazard | Days reported | Most recent | Worst on record |
|---|---|---|---|
| Heavy snow & winter storms | 203 | May 2026 | — |
| High winds | 81 | Mar 2026 | — |
| Avalanches | 32 | Feb 2025 | Apr 20, 2013 · 5 deaths |
| Flash flooding | 7 | Sep 2013 | Sep 14, 2013 · $256,000 damage |
| Blizzards | 4 | Jan 2012 | — |
| Lightning casualties & damage | 4 | Jun 2015 | — |
| Extreme cold & wind chill | 2 | Jan 2025 | — |
| Damaging thunderstorm winds | 2 | Jun 2023 | — |
Source: NOAA NCEI Storm Events Database, 1996–2026 (the latest year is partial). A "day" is a date with at least one report in the South and Southeast Grand/West Central and Southwest Boulder/Gilpin/Clear Creek/Summit/North and West Park Counties Above 9000 Feet forecast zone and Clear Creek County; damage is as reported, not adjusted for inflation.
How much snow does St. Mary's get?
A normal year brings about 214 inches of snow to St. Mary's, based on NOAA's 1991–2020 climate normals for the Winter Park weather station 7.9 miles away. The snowiest month is usually January (33.2 in).
| Oct | Nov | Dec | Jan | Feb | Mar | Apr | May |
|---|---|---|---|---|---|---|---|
| 14.2 | 26.8 | 32.1 | 33.2 | 30.8 | 31.9 | 31.5 | 11.2 |
Normal snowfall in inches. TALON Pro compares this season's snow at your location with these normals as winter goes on.
Which radars cover St. Mary's?
The closest NEXRAD Doppler radar is KFTG (Denver/Boulder, CO), about 59 miles east. Radar beams climb as they travel, so the height of the lowest scan over town decides how low in a storm the radar can see.
| Radar | Distance | Lowest beam over St. Mary's | View |
|---|---|---|---|
| KFTG Denver/Boulder, CO | 59 mi east | 4,400 ft | Good — most storms and steady rain or snow show clearly |
| KCYS Cheyenne, WY | 102 mi north-northeast | 10,000 ft | Limited — the beam overshoots the lowest part of storms |
| KPUX Pueblo, CO | 122 mi southeast | 13,100 ft | Limited — the beam overshoots the lowest part of storms |
Beam height is the center of the 0.5° scan above the radar, with standard refraction. Mountains near a radar can block it further.
Tornado & hail history near St. Mary's
Since 1950, NOAA has recorded 6 tornadoes within 25 miles of St. Mary's. Most came in June and September. The strongest was an F1 on June 16, 1996, which touched down about 14 miles northeast of town. The most recent was an EF0 on July 28, 2012, which touched down about 16 miles south of town.
Hail: 161 reports of 1-inch or larger hail within 25 miles since 1955, 14 of them 2 inches or more; the largest was 2.75-inch hail on June 17, 1979.
Source: NOAA Storm Prediction Center — tornadoes 1950–2025, hail 1955–2025. Distances are to each tornado's track; ratings before February 2007 use the original Fujita scale.
On TALON you get St. Mary's's live radar loop, rain/snow/ice colors, flash-flood risk, storm tracks with arrival times and NWS warnings free; close-up radar and rotation detection are part of TALON Pro.
St. Mary's radar FAQ
Where is the nearest weather radar to St. Mary's, CO?
KFTG (Denver/Boulder, CO), about 59 miles east. KCYS (Cheyenne, WY) is 102 miles away and also covers the area.
Does radar show snow in St. Mary's?
Yes. TALON colors snow blue, a rain–snow mix pink and freezing rain purple using NOAA's precipitation-type analysis. Over St. Mary's the lowest scan from KFTG is about 4,400 ft up.
Is TALON's radar for St. Mary's free?
Yes — the US radar loop, rain/snow/ice colors, flash-flood risk, storm tracks and NWS warnings are free in any browser. Close-up radar, rotation detection and longer forecasts are part of TALON Pro.
Should I rely on radar for my safety?
No app replaces official warnings. When the National Weather Service issues a warning for St. Mary's, follow it right away — see watch vs. warning.
Radar for nearby towns
- Georgetown, CO radar 7 mi
- Winter Park, CO radar 8 mi
- Idaho Springs, CO radar 9 mi
- Fraser, CO radar 11 mi
- Nederland, CO radar 13 mi
- Granby, CO radar 22 mi
- Golden, CO radar 24 mi
- Dillon, CO radar 25 mi
- Boulder, CO radar 25 mi
- Silverthorne, CO radar 26 mi