Delavan, WI Live Doppler Radar
Live radar for Delavan, Walworth County: every NWS radar combined, rain, snow and ice colors, flash-flood risk, storm tracks and official warnings.
What weather hits Delavan?
Since 1996, the National Weather Service has logged damaging thunderstorm winds on 139 days in the Walworth forecast zone and Walworth County — the most common reported hazard around Delavan, mostly in June and July. Next come heavy snow & winter storms (57 days) and excessive heat (45 days).
| Hazard | Days reported | Most recent | Worst on record |
|---|---|---|---|
| Damaging thunderstorm winds | 139 | Jun 2026 | Jul 21, 1998 · $2.0 million damage |
| Heavy snow & winter storms | 57 | Nov 2025 | Jan 12, 2024 · $20,000 damage |
| Excessive heat | 45 | Jun 2026 | Jul 3, 2012 · 1 death |
| Extreme cold & wind chill | 35 | Jan 2026 | Jan 9, 1996 · 1 death |
| Flooding | 17 | Jun 2026 | Jun 17, 1996 · $24 million damage |
| Flash flooding | 16 | Apr 2026 | Jul 12, 2017 · $10 million damage |
| Lightning casualties & damage | 15 | May 2008 | Apr 25, 2008 · $100,000 damage |
| High winds | 13 | Apr 2026 | Nov 10, 1998 · $800,000 damage |
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 Walworth forecast zone and Walworth County; damage is as reported, not adjusted for inflation.
How much snow does Delavan get?
A normal year brings about 40 inches of snow to Delavan, based on NOAA's 1991–2020 climate normals for the Lake Geneva Wwtp weather station 10.6 miles away. The snowiest month is usually January (13.9 in).
| Oct | Nov | Dec | Jan | Feb | Mar | Apr | May |
|---|---|---|---|---|---|---|---|
| 0.2 | 3.4 | 7.1 | 13.9 | 8.1 | 4.8 | 2.6 | 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 Delavan?
The closest NEXRAD Doppler radar is KMKX (Milwaukee/Sullivan, WI), about 24 miles north. 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 Delavan | View |
|---|---|---|---|
| KMKX Milwaukee/Sullivan, WI | 24 mi north | 1,400 ft | Excellent — the lowest scan sees close to the ground |
| KLOT Chicago, IL | 76 mi south-southeast | 6,400 ft | Fair — the beam can pass over shallow snow and low-level rotation |
| KDVN Quad Cities, IA | 122 mi southwest | 13,100 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 Delavan
Since 1950, NOAA has recorded 115 tornadoes within 25 miles of Delavan, 20 of them EF2/F2 or stronger. Most came in June and July. The strongest was an F4 on April 21, 1967, which passed about 22 miles south-southeast of town and caused 24 deaths. The most recent was an EF2 on June 22, 2024, which passed about 19 miles west of town.
Hail: 313 reports of 1-inch or larger hail within 25 miles since 1955, 24 of them 2 inches or more; the largest was 3.75-inch hail on August 2, 2015.
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 Delavan'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.
Delavan radar FAQ
Where is the nearest weather radar to Delavan, WI?
KMKX (Milwaukee/Sullivan, WI), about 24 miles north. KLOT (Chicago, IL) is 76 miles away and also covers the area.
Does radar show snow in Delavan?
Yes. TALON colors snow blue, a rain–snow mix pink and freezing rain purple using NOAA's precipitation-type analysis. Over Delavan the lowest scan from KMKX is about 1,400 ft up.
Is TALON's radar for Delavan 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 Delavan, follow it right away — see watch vs. warning.
Radar for nearby towns
- Darien, WI radar 5 mi
- Elkhorn, WI radar 6 mi
- Williams Bay, WI radar 6 mi
- Fontana-on-Geneva Lake, WI radar 7 mi
- Walworth, WI radar 7 mi
- Sharon, WI radar 10 mi
- Lake Geneva, WI radar 11 mi
- Clinton, WI radar 13 mi
- Bloomfield, WI radar 15 mi
- Whitewater, WI radar 15 mi