St. Johns, IL Live Doppler Radar
Live radar for St. Johns, Perry County: every NWS radar combined, rain, snow and ice colors, flash-flood risk, storm tracks and official warnings.
What weather hits St. Johns?
Since 1996, the National Weather Service has logged dangerous heat on 81 days in the Perry forecast zone and Perry County — the most common reported hazard around St. Johns, mostly in July and August. Next come damaging thunderstorm winds (79 days) and heavy snow & winter storms (44 days).
| Hazard | Days reported | Most recent | Worst on record |
|---|---|---|---|
| Excessive heat | 81 | Aug 2025 | — |
| Damaging thunderstorm winds | 79 | Oct 2025 | Jun 8, 2009 · $1.3 million damage |
| Heavy snow & winter storms | 44 | Jan 2026 | Jan 31, 2008 · 2 deaths |
| Flash flooding | 37 | Jul 2024 | Apr 28, 1996 · $220,000 damage |
| Extreme cold & wind chill | 25 | Jan 2026 | Jan 5, 2014 · 1 death |
| Flooding | 19 | Jul 2024 | Mar 18, 2008 · $250,000 damage |
| High winds | 7 | Mar 2019 | Sep 14, 2008 · $200,000 damage |
| Ice storms & sleet | 4 | Jan 2010 | — |
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 Perry forecast zone and Perry County; damage is as reported, not adjusted for inflation.
How much snow does St. Johns get?
A normal year brings about 12 inches of snow to St. Johns, based on NOAA's 1991–2020 climate normals for the Du Quoin 4 Se weather station 4.1 miles away. The snowiest month is usually January (3.8 in).
| Oct | Nov | Dec | Jan | Feb | Mar | Apr | May |
|---|---|---|---|---|---|---|---|
| 0.2 | 0.3 | 3.6 | 3.8 | 3.2 | 0.7 | 0.1 | 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 St. Johns?
The closest NEXRAD Doppler radar is KPAH (Paducah, KY), about 72 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 St. Johns | View |
|---|---|---|---|
| KPAH Paducah, KY | 72 mi south-southeast | 5,900 ft | Good — most storms and steady rain or snow show clearly |
| KVWX Evansville, IN | 84 mi east | 7,400 ft | Fair — the beam can pass over shallow snow and low-level rotation |
| KLSX St. Louis, MO | 91 mi west-northwest | 8,300 ft | Fair — the beam can pass over shallow snow and low-level rotation |
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 St. Johns
Since 1950, NOAA has recorded 106 tornadoes within 25 miles of St. Johns, 28 of them EF2/F2 or stronger. Most came in April and May. The strongest was an F5 on December 18, 1957, which passed about 3 miles north-northwest of town and caused 1 death. The most recent was an EF1 on April 20, 2025, which touched down about 17 miles south-southwest of town.
Hail: 285 reports of 1-inch or larger hail within 25 miles since 1955, 20 of them 2 inches or more; the largest was 3.00-inch hail on June 30, 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 St. Johns'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.
St. Johns radar FAQ
Where is the nearest weather radar to St. Johns, IL?
KPAH (Paducah, KY), about 72 miles south-southeast. KVWX (Evansville, IN) is 84 miles away and also covers the area.
Does radar show snow in St. Johns?
Yes. TALON colors snow blue, a rain–snow mix pink and freezing rain purple using NOAA's precipitation-type analysis. Over St. Johns the lowest scan from KPAH is about 5,900 ft up.
Is TALON's radar for St. Johns 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 St. Johns, follow it right away — see watch vs. warning.
Radar for nearby towns
- Du Quoin, IL radar 2 mi
- Pinckneyville, IL radar 6 mi
- Sesser, IL radar 11 mi
- Christopher, IL radar 11 mi
- Royalton, IL radar 13 mi
- Zeigler, IL radar 13 mi
- De Soto, IL radar 15 mi
- Benton, IL radar 18 mi
- Cambria, IL radar 19 mi
- Murphysboro, IL radar 19 mi