Trenton, IL Live Doppler Radar

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

Open live radar for Trenton What TALON shows

What weather hits Trenton?

Since 1996, the National Weather Service has logged damaging thunderstorm winds on 98 days in the Clinton forecast zone and Clinton County — the most common reported hazard around Trenton, mostly in June and May. Next come excessive heat (50 days) and heavy snow & winter storms (39 days).

Hazard	Days reported	Most recent	Worst on record
Damaging thunderstorm winds	98	May 2026	Oct 4, 2000 · $210,000 damage
Excessive heat	50	Jul 2025	—
Heavy snow & winter storms	39	Jan 2025	—
Flash flooding	20	Jul 2025	Jun 10, 1996 · $500,000 damage
Ice storms & sleet	5	Feb 2022	—
Extreme cold & wind chill	4	Jan 2024	—
High winds	3	Mar 2001	Sep 26, 1996 · $20,000 damage
Flooding	3	May 2015	May 11, 2015 · 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 Clinton forecast zone and Clinton County; damage is as reported, not adjusted for inflation.

How much snow does Trenton get?

A normal year brings about 10 inches of snow to Trenton, based on NOAA's 1991–2020 climate normals for the Albers 1 W weather station 5.6 miles away. The snowiest month is usually January (4.0 in).

Oct	Nov	Dec	Jan	Feb	Mar	Apr	May
0.0	0.3	1.8	4.0	3.2	0.8	0.0	0.0

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

Which radars cover Trenton?

The closest NEXRAD Doppler radar is KLSX (St. Louis, MO), about 54 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.

Radar	Distance	Lowest beam over Trenton	View
KLSX St. Louis, MO	54 mi west	4,000 ft	Good — most storms and steady rain or snow show clearly
KILX Lincoln, IL	108 mi north	10,800 ft	Limited — the beam overshoots the lowest part of storms
KVWX Evansville, IN	109 mi east-southeast	10,900 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 Trenton

Since 1950, NOAA has recorded 137 tornadoes within 25 miles of Trenton, 41 of them EF2/F2 or stronger. Most came in April and May. The strongest was an F4 on February 24, 1956, which crossed near town and caused 6 deaths. The most recent was an EF2 on May 16, 2025, which passed about 20 miles northwest of town.

Hail: 408 reports of 1-inch or larger hail within 25 miles since 1955, 44 of them 2 inches or more; the largest was 4.50-inch hail on April 28, 2012.

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 Trenton'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.

Trenton radar FAQ

Where is the nearest weather radar to Trenton, IL?

KLSX (St. Louis, MO), about 54 miles west. KILX (Lincoln, IL) is 108 miles away and also covers the area.

Does radar show snow in Trenton?

Yes. TALON colors snow blue, a rain–snow mix pink and freezing rain purple using NOAA's precipitation-type analysis. Over Trenton the lowest scan from KLSX is about 4,000 ft up.

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

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