Monticello, MO Live Doppler Radar
Live radar for Monticello, Lewis County: every NWS radar combined, rain, snow and ice colors, flash-flood risk, storm tracks and official warnings.
What weather hits Monticello?
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 Monticello, 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.
How much snow does Monticello get?
A normal year brings about 18 inches of snow to Monticello, based on NOAA's 1991–2020 climate normals for the Steffenville weather station 13.8 miles away. The snowiest month is usually January (5.8 in).
| Oct | Nov | Dec | Jan | Feb | Mar | Apr | May |
|---|---|---|---|---|---|---|---|
| 0.1 | 1.0 | 4.0 | 5.8 | 4.1 | 2.1 | 0.7 | 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 Monticello?
The closest NEXRAD Doppler radar is KLSX (St. Louis, MO), about 112 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 Monticello | View |
|---|---|---|---|
| KLSX St. Louis, MO | 112 mi south-southeast | 11,500 ft | Limited — the beam overshoots the lowest part of storms |
| KDVN Quad Cities, IA | 119 mi north-northeast | 12,600 ft | Limited — the beam overshoots the lowest part of storms |
| KILX Lincoln, IL | 126 mi east | 13,700 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 Monticello
Since 1950, NOAA has recorded 63 tornadoes within 25 miles of Monticello, 16 of them EF2/F2 or stronger. Most came in April and June. The strongest was an F4 on April 21, 1967, which passed about 24 miles west-southwest of town. The most recent was a tornado of unknown strength on August 10, 2025, which touched down about 22 miles north of town.
Hail: 252 reports of 1-inch or larger hail within 25 miles since 1955, 22 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 Monticello'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.
Monticello radar FAQ
Where is the nearest weather radar to Monticello, MO?
KLSX (St. Louis, MO), about 112 miles south-southeast. KDVN (Quad Cities, IA) is 119 miles away and also covers the area.
Does radar show snow in Monticello?
Yes. TALON colors snow blue, a rain–snow mix pink and freezing rain purple using NOAA's precipitation-type analysis. Over Monticello the lowest scan from KLSX is about 11,500 ft up, so light snow from shallow clouds can be under-shown — check NWS winter alerts too.
Is TALON's radar for Monticello 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 Monticello, follow it right away — see watch vs. warning.
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