Unionville, MT Live Doppler Radar
Live radar for Unionville, Lewis and Clark County: every NWS radar combined, rain, snow and ice colors, flash-flood risk, storm tracks and official warnings.
What weather hits Unionville?
Since 1996, the National Weather Service has logged damaging thunderstorm winds on 61 days in the Upper Blackfoot and MacDonald Pass forecast zone and Lewis and Clark County — the most common reported hazard around Unionville, mostly in July and June. Next come high winds (22 days) and flash flooding (18 days).
| Hazard | Days reported | Most recent | Worst on record |
|---|---|---|---|
| Damaging thunderstorm winds | 61 | Sep 2025 | Jun 20, 2003 · $10,000 damage |
| High winds | 22 | Jun 2026 | — |
| Flash flooding | 18 | Sep 2024 | Jul 3, 2022 · $700,000 damage |
| Flooding | 14 | Jun 2023 | Apr 9, 2023 · $100,000 damage |
| Heavy snow & winter storms | 13 | Mar 2026 | — |
| Wildfires | 8 | Sep 2024 | Jul 23, 2000 · $2.5 million damage |
| Extreme cold & wind chill | 6 | Feb 2025 | — |
| Lightning casualties & damage | 3 | 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 Upper Blackfoot and MacDonald Pass forecast zone and Lewis and Clark County; damage is as reported, not adjusted for inflation.
How much snow does Unionville get?
A normal year brings about 37 inches of snow to Unionville, based on NOAA's 1991–2020 climate normals for the Helena Rgnl Ap weather station 7.1 miles away. The snowiest month is usually December (7.7 in).
| Oct | Nov | Dec | Jan | Feb | Mar | Apr | May |
|---|---|---|---|---|---|---|---|
| 2.8 | 5.4 | 7.7 | 6.6 | 6.6 | 4.6 | 2.9 | 0.1 |
Normal snowfall in inches. TALON Pro compares this season's snow at your location with these normals as winter goes on.
Which radars cover Unionville?
The closest NEXRAD Doppler radar is KTFX (Great Falls, MT), about 71 miles north-northeast. 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 Unionville | View |
|---|---|---|---|
| KTFX Great Falls, MT | 71 mi north-northeast | 5,800 ft | Good — most storms and steady rain or snow show clearly |
| KMSX Missoula, MT | 96 mi west-northwest | 9,100 ft | Fair — the beam can pass over shallow snow and low-level rotation |
| KBLX Billings, MT | 173 mi east-southeast | 23,000 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 Unionville
Since 1950, NOAA has recorded 4 tornadoes within 25 miles of Unionville. Most came in July and June. The strongest was an F0 on July 22, 1960, which touched down about 5 miles northeast of town. The most recent was an F0 on June 27, 1997, which touched down about 4 miles northeast of town.
Hail: 93 reports of 1-inch or larger hail within 25 miles since 1955, 9 of them 2 inches or more; the largest was 3.00-inch hail on June 6, 1997.
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 Unionville'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.
Unionville radar FAQ
Where is the nearest weather radar to Unionville, MT?
KTFX (Great Falls, MT), about 71 miles north-northeast. KMSX (Missoula, MT) is 96 miles away and also covers the area.
Does radar show snow in Unionville?
Yes. TALON colors snow blue, a rain–snow mix pink and freezing rain purple using NOAA's precipitation-type analysis. Over Unionville the lowest scan from KTFX is about 5,800 ft up.
Is TALON's radar for Unionville 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 Unionville, follow it right away — see watch vs. warning.