Hartford, WI Live Doppler Radar
Live radar for Hartford, Washington County: every NWS radar combined, rain, snow and ice colors, flash-flood risk, storm tracks and official warnings.
What weather hits Hartford?
Since 1996, the National Weather Service has logged damaging thunderstorm winds on 98 days in the Washington forecast zone and Washington County — the most common reported hazard around Hartford, mostly in June and July. Next come heavy snow & winter storms (60 days) and excessive heat (38 days).
| Hazard | Days reported | Most recent | Worst on record |
|---|---|---|---|
| Damaging thunderstorm winds | 98 | Jun 2026 | May 31, 1998 · 1 death · $8.7 million damage |
| Heavy snow & winter storms | 60 | Nov 2025 | Mar 28, 2009 · 3 deaths |
| Excessive heat | 38 | Jun 2026 | — |
| Extreme cold & wind chill | 34 | Jan 2026 | Mar 3, 2010 · 1 death |
| Lightning casualties & damage | 24 | Sep 2025 | Sep 22, 2025 · 1 death |
| High winds | 13 | Dec 2021 | Nov 10, 1998 · $450,000 damage |
| Flash flooding | 11 | Aug 2025 | Jun 8, 2008 · $8.6 million damage |
| Flooding | 10 | Apr 2026 | Aug 10, 2025 · 1 death · $1.0 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 Washington forecast zone and Washington County; damage is as reported, not adjusted for inflation.
How much snow does Hartford get?
A normal year brings about 36 inches of snow to Hartford, based on NOAA's 1991–2020 climate normals for the Hartford Wwtp weather station 1.8 miles away. The snowiest month is usually December (10.1 in).
| Oct | Nov | Dec | Jan | Feb | Mar | Apr | May |
|---|---|---|---|---|---|---|---|
| 0.3 | 1.1 | 10.1 | 10.0 | 9.1 | 4.0 | 1.4 | 0.3 |
Normal snowfall in inches. TALON Pro compares this season's snow at your location with these normals as winter goes on.
Which radars cover Hartford?
The closest NEXRAD Doppler radar is KMKX (Milwaukee/Sullivan, WI), about 26 miles south-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 Hartford | View |
|---|---|---|---|
| KMKX Milwaukee/Sullivan, WI | 26 mi south-southwest | 1,500 ft | Excellent — the lowest scan sees close to the ground |
| KGRB Green Bay, WI | 82 mi north | 7,200 ft | Fair — the beam can pass over shallow snow and low-level rotation |
| KLOT Chicago, IL | 120 mi south | 12,700 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 Hartford
Since 1950, NOAA has recorded 122 tornadoes within 25 miles of Hartford, 32 of them EF2/F2 or stronger. Most came in June and July. The strongest was an F4 on April 4, 1981, which touched down about 12 miles northeast of town and caused 3 deaths. The most recent was an EF0 on July 16, 2025, which passed about 12 miles west of town.
Hail: 320 reports of 1-inch or larger hail within 25 miles since 1955, 33 of them 2 inches or more; the largest was 3.75-inch hail on May 14, 2001.
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 Hartford'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.
Hartford radar FAQ
Where is the nearest weather radar to Hartford, WI?
KMKX (Milwaukee/Sullivan, WI), about 26 miles south-southwest. KGRB (Green Bay, WI) is 82 miles away and also covers the area.
Does radar show snow in Hartford?
Yes. TALON colors snow blue, a rain–snow mix pink and freezing rain purple using NOAA's precipitation-type analysis. Over Hartford the lowest scan from KMKX is about 1,500 ft up.
Is TALON's radar for Hartford 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 Hartford, follow it right away — see watch vs. warning.
Radar for nearby towns
- Slinger, WI radar 5 mi
- Richfield, WI radar 9 mi
- Jackson, WI radar 11 mi
- Hustisford, WI radar 11 mi
- West Bend, WI radar 12 mi
- Merton, WI radar 13 mi
- Lisbon, WI radar 13 mi
- Theresa, WI radar 14 mi
- Germantown, WI radar 14 mi
- Mayville, WI radar 15 mi