Troy, IL Live Doppler Radar

Live radar for Troy, Madison County: every NWS radar combined, rain, snow and ice colors, flash-flood risk, storm tracks and official warnings.

Open live radar for TroyWhat TALON shows

What weather hits Troy?

Since 1996, the National Weather Service has logged damaging thunderstorm winds on 166 days in the Madison forecast zone and Madison County — the most common reported hazard around Troy, mostly in May and July. Next come excessive heat (70 days) and heavy snow & winter storms (50 days).

HazardDays reportedMost recentWorst on record
Damaging thunderstorm winds166Apr 2026Aug 10, 2005 · $1.0 million damage
Excessive heat70Aug 2025Jul 1, 2012 · 2 deaths
Heavy snow & winter storms50Nov 2025Mar 3, 2008 · 2 deaths
Flash flooding27Aug 2020Jun 6, 2008 · $1,000 damage
Flooding13Apr 2026Jun 2, 2019 · $25 million damage
High winds9Mar 2025Sep 26, 1996 · $50,000 damage
Ice storms & sleet5Feb 2022—
Extreme cold & wind chill5Jan 2024Dec 22, 2000 · 1 death

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 Madison forecast zone and Madison County; damage is as reported, not adjusted for inflation.

How much snow does Troy get?

A normal year brings about 11 inches of snow to Troy, based on NOAA's 1991–2020 climate normals for the Edwardsville 2 W weather station 8.3 miles away. The snowiest month is usually January (3.7 in).

OctNovDecJanFebMarAprMay
0.00.23.33.72.51.00.10.0

Normal snowfall in inches. TALON Pro compares this season's snow at your location with these normals as winter goes on.

Which radars cover Troy?

The closest NEXRAD Doppler radar is KLSX (St. Louis, MO), about 43 miles west. 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.

RadarDistanceLowest beam over TroyView
KLSX
St. Louis, MO		43 mi west2,900 ftExcellent — the lowest scan sees close to the ground
KILX
Lincoln, IL		103 mi north-northeast10,000 ftLimited — the beam overshoots the lowest part of storms
KVWX
Evansville, IN		122 mi east-southeast13,000 ftLimited — 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 Troy

Since 1950, NOAA has recorded 164 tornadoes within 25 miles of Troy, 48 of them EF2/F2 or stronger. Most came in April and May. The strongest was an F4 on February 10, 1959, which passed about 14 miles west-southwest of town and caused 21 deaths. The most recent was an EF2 on May 16, 2025, which passed about 7 miles northwest of town.

Hail: 603 reports of 1-inch or larger hail within 25 miles since 1955, 66 of them 2 inches or more; the largest was 4.50-inch hail on May 25, 2011.

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 Troy'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.

Troy radar FAQ

Where is the nearest weather radar to Troy, IL?

KLSX (St. Louis, MO), about 43 miles west. KILX (Lincoln, IL) is 103 miles away and also covers the area.

Does radar show snow in Troy?

Yes. TALON colors snow blue, a rain–snow mix pink and freezing rain purple using NOAA's precipitation-type analysis. Over Troy the lowest scan from KLSX is about 2,900 ft up.

Is TALON's radar for Troy 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 Troy, follow it right away — see watch vs. warning.

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