Glenham, SD Live Doppler Radar
Live radar for Glenham, Walworth County: every NWS radar combined, rain, snow and ice colors, flash-flood risk, storm tracks and official warnings.
What weather hits Glenham?
Since 1996, the National Weather Service has logged damaging thunderstorm winds on 84 days in the Walworth forecast zone and Walworth County — the most common reported hazard around Glenham, mostly in June and July. Next come high winds (65 days) and blizzards (46 days).
| Hazard | Days reported | Most recent | Worst on record |
|---|---|---|---|
| Damaging thunderstorm winds | 84 | Jun 2026 | — |
| High winds | 65 | Mar 2026 | — |
| Blizzards | 46 | Feb 2026 | — |
| Extreme cold & wind chill | 41 | Jan 2026 | Jan 8, 2019 · 1 death |
| Heavy snow & winter storms | 39 | Apr 2023 | — |
| Flooding | 10 | Jun 2019 | Jun 1, 2019 · $3.2 million damage |
| Excessive heat | 8 | Jul 2024 | — |
| Flash flooding | 8 | May 2018 | May 17, 2018 · $3.0 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 Walworth forecast zone and Walworth County; damage is as reported, not adjusted for inflation.
How much snow does Glenham get?
A normal year brings about 31 inches of snow to Glenham, based on NOAA's 1991–2020 climate normals for the Mobridge Muni Ap weather station 6.7 miles away. The snowiest month is usually February (6.4 in).
| Oct | Nov | Dec | Jan | Feb | Mar | Apr | May |
|---|---|---|---|---|---|---|---|
| 1.7 | 3.6 | 5.7 | 6.3 | 6.4 | 4.1 | 3.2 | 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 Glenham?
The closest NEXRAD Doppler radar is KBIS (Bismarck, ND), about 89 miles north-northwest. 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 Glenham | View |
|---|---|---|---|
| KBIS Bismarck, ND | 89 mi north-northwest | 8,000 ft | Fair — the beam can pass over shallow snow and low-level rotation |
| KABR Aberdeen, SD | 90 mi east | 8,200 ft | Fair — the beam can pass over shallow snow and low-level rotation |
| KUDX Rapid City, SD | 159 mi southwest | 19,900 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 Glenham
Since 1950, NOAA has recorded 41 tornadoes within 25 miles of Glenham, 8 of them EF2/F2 or stronger. Most came in June and August. The strongest was an F3 on June 20, 1968, which passed about 2 miles east of town. The most recent was an EF1 on September 14, 2025, which passed about 3 miles southwest of town.
Hail: 239 reports of 1-inch or larger hail within 25 miles since 1955, 23 of them 2 inches or more; the largest was 5.00-inch hail on July 7, 1990.
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 Glenham'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.
Glenham radar FAQ
Where is the nearest weather radar to Glenham, SD?
KBIS (Bismarck, ND), about 89 miles north-northwest. KABR (Aberdeen, SD) is 90 miles away and also covers the area.
Does radar show snow in Glenham?
Yes. TALON colors snow blue, a rain–snow mix pink and freezing rain purple using NOAA's precipitation-type analysis. Over Glenham the lowest scan from KBIS is about 8,000 ft up, so light snow from shallow clouds can be under-shown — check NWS winter alerts too.
Is TALON's radar for Glenham 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 Glenham, follow it right away — see watch vs. warning.
Radar for nearby towns
- Mobridge, SD radar 8 mi
- Gettysburg, SD radar 40 mi
- Eagle Butte, SD radar 60 mi