Johnstown, CO Live Doppler Radar
Live radar for Johnstown, Weld County: every NWS radar combined, rain, snow and ice colors, flash-flood risk, storm tracks and official warnings.
What weather hits Johnstown?
Since 1996, the National Weather Service has logged damaging thunderstorm winds on 141 days in the Central and South Weld County forecast zone and Weld County — the most common reported hazard around Johnstown, mostly in July and June. Next come high winds (57 days) and heavy snow & winter storms (44 days).
| Hazard | Days reported | Most recent | Worst on record |
|---|---|---|---|
| Damaging thunderstorm winds | 141 | Jun 2026 | Jun 25, 1999 · 1 death |
| High winds | 57 | Mar 2026 | May 20, 2001 · $1.4 million damage |
| Heavy snow & winter storms | 44 | Feb 2024 | Dec 28, 2006 · $102,000 damage |
| Flash flooding | 36 | Jul 2025 | Jul 13, 2001 · $600,000 damage |
| Flooding | 23 | Aug 2025 | May 28, 2024 · 1 death · $3.4 million damage |
| Lightning casualties & damage | 23 | May 2017 | Jun 5, 2009 · 1 death |
| Blizzards | 11 | Mar 2021 | Mar 13, 2019 · 1 death |
| Extreme cold & wind chill | 7 | Jan 2026 | — |
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 Central and South Weld County forecast zone and Weld County; damage is as reported, not adjusted for inflation.
How much snow does Johnstown get?
A normal year brings about 47 inches of snow to Johnstown, based on NOAA's 1991–2020 climate normals for the Loveland 2N weather station 12.7 miles away. The snowiest month is usually February (8.2 in).
| Oct | Nov | Dec | Jan | Feb | Mar | Apr | May |
|---|---|---|---|---|---|---|---|
| 3.5 | 7.0 | 7.6 | 6.0 | 8.2 | 7.9 | 5.7 | 1.1 |
Normal snowfall in inches. TALON Pro compares this season's snow at your location with these normals as winter goes on.
Which radars cover Johnstown?
The closest NEXRAD Doppler radar is KFTG (Denver/Boulder, CO), about 41 miles south-southeast. 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 Johnstown | View |
|---|---|---|---|
| KFTG Denver/Boulder, CO | 41 mi south-southeast | 2,700 ft | Excellent — the lowest scan sees close to the ground |
| KCYS Cheyenne, WY | 59 mi north | 4,400 ft | Good — most storms and steady rain or snow show clearly |
| KPUX Pueblo, CO | 133 mi south-southeast | 15,100 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 Johnstown
Since 1950, NOAA has recorded 177 tornadoes within 25 miles of Johnstown, 16 of them EF2/F2 or stronger. Most came in June and May. The strongest was an EF3 on May 22, 2008, which passed about 5 miles east-northeast of town and caused 1 death. The most recent was a tornado of unknown strength on July 14, 2025, which touched down about 24 miles southeast of town.
Hail: 941 reports of 1-inch or larger hail within 25 miles since 1955, 88 of them 2 inches or more; the largest was 4.50-inch hail on June 4, 1983.
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 Johnstown'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.
Johnstown radar FAQ
Where is the nearest weather radar to Johnstown, CO?
KFTG (Denver/Boulder, CO), about 41 miles south-southeast. KCYS (Cheyenne, WY) is 59 miles away and also covers the area.
Does radar show snow in Johnstown?
Yes. TALON colors snow blue, a rain–snow mix pink and freezing rain purple using NOAA's precipitation-type analysis. Over Johnstown the lowest scan from KFTG is about 2,700 ft up.
Is TALON's radar for Johnstown 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 Johnstown, follow it right away — see watch vs. warning.
Radar for nearby towns
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- Greeley, CO radar 10 mi
- Firestone, CO radar 11 mi
- Loveland, CO radar 11 mi
- La Salle, CO radar 11 mi