Williamstown, MO Live Doppler Radar

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

Open live radar for Williamstown What TALON shows

What weather hits Williamstown?

Since 1996, the National Weather Service has logged damaging thunderstorm winds on 64 days in the Lewis forecast zone and Lewis County — the most common reported hazard around Williamstown, mostly in June and July. Next come heavy snow & winter storms (41 days) and excessive heat (40 days).

Hazard	Days reported	Most recent	Worst on record
Damaging thunderstorm winds	64	Apr 2026	Jul 12, 2015 · 1 death
Heavy snow & winter storms	41	Nov 2025	—
Excessive heat	40	Aug 2023	—
Flash flooding	27	Aug 2023	Jul 11, 2015 · 1 death
Flooding	15	May 2013	May 15, 2010 · 1 death
High winds	7	Mar 2025	—
Extreme cold & wind chill	7	Jan 2025	—
Ice storms & sleet	6	Dec 2008	—

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

Which radars cover Williamstown?

The closest NEXRAD Doppler radar is KDVN (Quad Cities, IA), about 114 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 Williamstown	View
KDVN Quad Cities, IA	114 mi north-northeast	11,800 ft	Limited — the beam overshoots the lowest part of storms
KLSX St. Louis, MO	122 mi south-southeast	13,100 ft	Limited — the beam overshoots the lowest part of storms
KILX Lincoln, IL	130 mi east	14,400 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 Williamstown

Since 1950, NOAA has recorded 66 tornadoes within 25 miles of Williamstown, 19 of them EF2/F2 or stronger. Most came in April and May. The strongest was an F4 on April 21, 1967, which passed about 25 miles southwest of town. The most recent was a tornado of unknown strength on August 10, 2025, which touched down about 14 miles north-northeast of town.

Hail: 257 reports of 1-inch or larger hail within 25 miles since 1955, 23 of them 2 inches or more; the largest was 3.25-inch hail on April 4, 2023.

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 Williamstown'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.

Williamstown radar FAQ

Where is the nearest weather radar to Williamstown, MO?

KDVN (Quad Cities, IA), about 114 miles north-northeast. KLSX (St. Louis, MO) is 122 miles away and also covers the area.

Does radar show snow in Williamstown?

Yes. TALON colors snow blue, a rain–snow mix pink and freezing rain purple using NOAA's precipitation-type analysis. Over Williamstown the lowest scan from KDVN is about 11,800 ft up, so light snow from shallow clouds can be under-shown — check NWS winter alerts too.

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

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