Grafton, WI Live Doppler Radar
Live radar for Grafton, Ozaukee County: every NWS radar combined, rain, snow and ice colors, flash-flood risk, storm tracks and official warnings.
What weather hits Grafton?
Since 1996, the National Weather Service has logged heavy snow or a winter storm on 65 days in the Ozaukee forecast zone and Ozaukee County — the most common reported hazard around Grafton, mostly in December and January. Next come damaging thunderstorm winds (46 days) and excessive heat (35 days).
| Hazard | Days reported | Most recent | Worst on record |
|---|---|---|---|
| Heavy snow & winter storms | 65 | Nov 2025 | Jan 12, 2024 · $20,000 damage |
| Damaging thunderstorm winds | 46 | Aug 2024 | May 31, 1998 · $3.8 million damage |
| Excessive heat | 35 | Jun 2026 | — |
| Extreme cold & wind chill | 33 | Jan 2026 | Feb 3, 2007 · $2,000 damage |
| Flooding | 22 | Aug 2025 | May 17, 2020 · 1 death · $30,000 damage |
| Lightning casualties & damage | 15 | May 2012 | Jun 23, 2010 · $1.0 million damage |
| High winds | 13 | Mar 2026 | Nov 10, 1998 · $275,000 damage |
| Flash flooding | 13 | Apr 2026 | Jun 18, 1996 · $5.3 million 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 Ozaukee forecast zone and Ozaukee County; damage is as reported, not adjusted for inflation.
How much snow does Grafton get?
A normal year brings about 42 inches of snow to Grafton, based on NOAA's 1991–2020 climate normals for the Port Washington weather station 6.6 miles away. The snowiest month is usually January (13.2 in).
| Oct | Nov | Dec | Jan | Feb | Mar | Apr | May |
|---|---|---|---|---|---|---|---|
| 0.0 | 0.9 | 10.7 | 13.2 | 10.7 | 6.0 | 0.8 | 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 Grafton?
The closest NEXRAD Doppler radar is KMKX (Milwaukee/Sullivan, WI), about 39 miles southwest. 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 Grafton | View |
|---|---|---|---|
| KMKX Milwaukee/Sullivan, WI | 39 mi southwest | 2,600 ft | Excellent — the lowest scan sees close to the ground |
| KGRB Green Bay, WI | 82 mi north | 7,100 ft | Fair — the beam can pass over shallow snow and low-level rotation |
| KLOT Chicago, IL | 119 mi south | 12,500 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 Grafton
Since 1950, NOAA has recorded 44 tornadoes within 25 miles of Grafton, 13 of them EF2/F2 or stronger. Most came in August and July. The strongest was an F4 on April 4, 1981, which touched down about 15 miles west-northwest of town and caused 3 deaths. The most recent was an EF0 on October 12, 2022, which passed about 22 miles south-southwest of town.
Hail: 228 reports of 1-inch or larger hail within 25 miles since 1955, 24 of them 2 inches or more; the largest was 3.00-inch hail on June 23, 2004.
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 Grafton'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.
Grafton radar FAQ
Where is the nearest weather radar to Grafton, WI?
KMKX (Milwaukee/Sullivan, WI), about 39 miles southwest. KGRB (Green Bay, WI) is 82 miles away and also covers the area.
Does radar show snow in Grafton?
Yes. TALON colors snow blue, a rain–snow mix pink and freezing rain purple using NOAA's precipitation-type analysis. Over Grafton the lowest scan from KMKX is about 2,600 ft up.
Is TALON's radar for Grafton 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 Grafton, follow it right away — see watch vs. warning.
Radar for nearby towns
- Cedarburg, WI radar 3 mi
- Saukville, WI radar 5 mi
- Port Washington, WI radar 5 mi
- Thiensville, WI radar 6 mi
- Mequon, WI radar 8 mi
- Newburg, WI radar 9 mi
- Bayside, WI radar 10 mi
- River Hills, WI radar 10 mi
- Brown Deer, WI radar 10 mi
- Fredonia, WI radar 10 mi