Hail history for Glenham, South Dakota
NOAA hail reports in and within about 5 km (3 miles) of Glenham since 1990, with preliminary reports to November 3, 2026.
Readout · Glenham
- Last hail
- Aug 24, 2026
- 1.00 in, quarter size · preliminary
- Hail days, last 5 years
- 1
- since Nov 3, 2021 · 1 report
- Largest ever
- 1.75 in
- golf ball · Aug 26, 2008
10 reports on 9 days since 1990 · #294 of 305 South Dakota places
Hail map · Glenham
- Under 1 in
- 1–1.75 in
- 1.75–2.5 in
- 2.5–4 in
- 4 in +
- No size
For homeowners
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What the record says about Glenham
The latest hail report in and around Glenham is from August 24, 2026, 1.00 in (quarter size). Since November 3, 2021 there has been one hail day; the biggest stones in that time were 1.00 in on August 24, 2026.
Over the 20 years 2006–2025, Glenham logged 6 reports on 5 hail days, about 0.3 reports a year. That is 33% less than the median South Dakota town on this site (0.5 a year) and ranks #294 of 305 South Dakota cities and towns on this site for all-time reports. Glenham accounts for 6% of the 181 reports filed in Walworth County.
0% of reports with a size were 2 inches (hen egg) or larger, against 7% for the median South Dakota town on this site. The largest hail on record here is 1.75 in (golf ball) on August 26, 2008 near Glenham.
The busiest year was 2021, with 2 reports on 2 days. Hail here peaks in August (80% of reports); 0% fall between April and June.
Reports a year 2006–2025 average
- Glenham 0.3
- Walworth County 5.7
- Median South Dakota town on this site 0.5
Hail days 2006–2025
- Glenham 5
- Walworth County 50
- Median South Dakota town on this site 7
Share 2 in or larger of sized reports
- Glenham 0%
- Walworth County 8%
- Median South Dakota town on this site 7%
Hail over time
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Total |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 1 | 1 | |||||||||||
| 2025 | 0 | ||||||||||||
| 2024 | 0 | ||||||||||||
| 2023 | 0 | ||||||||||||
| 2022 | 0 | ||||||||||||
| 2021 | 1 | 1 | 2 | ||||||||||
| 2020 | 0 | ||||||||||||
| 2019 | 0 | ||||||||||||
| 2018 | 0 | ||||||||||||
| 2017 | 0 |
Hail days since Nov 3, 2021
| Date | Reports | Largest | Storm page |
|---|---|---|---|
| Aug 24, 2026 | 1 | 1.00 in | View |
Largest hail on record
| Date | Size | Location | County | Time · source |
|---|---|---|---|---|
| Aug 26, 2008 | 1.75 ingolf ball | Glenham | Walworth | 20:30 local · NCEI |
| Aug 26, 1998 | 1.75 ingolf ball | 1 S Glenham | Walworth | 18:22 local · NCEI |
| Jul 6, 1992 | 1.75 ingolf ball | — | Walworth | 05:30 local · NCEI |
| Aug 3, 2012 | 1.50 inping pong ball | 1.61 ENE Glenham | Walworth | 14:05 local · NCEI |
| Aug 28, 2021 | 1.25 inhalf dollar | Glenham | Walworth | 00:35 local · NCEI |
Sizes filed before 1996 are often rough estimates (round numbers like 7.00 or 8.00 in) without an exact spot; they are shown as NOAA filed them.
Size of every report
- Under 1 in 1 10%
- 1–2 in 9 90%
- 2 in + 0 0%
Most recent reports
| Date | Size | Location | County | Time · source |
|---|---|---|---|---|
| Aug 24, 2026 | 1.00 inquarter | 2 SSE Glenham | Walworth | 00:45 UTC · NWS prelim. |
| Aug 28, 2021 | 1.25 inhalf dollar | Glenham | Walworth | 00:35 local · NCEI |
| Jul 26, 2021 | 1.00 inquarter | Glenham | Walworth | 07:30 local · NCEI |
| Aug 3, 2012 | 1.00 inquarter | Glenham | Walworth | 14:20 local · NCEI |
| Aug 3, 2012 | 1.50 inping pong ball | 1.61 ENE Glenham | Walworth | 14:05 local · NCEI |
| Aug 18, 2011 | 1.00 inquarter | 2.53 SE Glenham | Walworth | 17:30 local · NCEI |
| Aug 26, 2008 | 1.75 ingolf ball | Glenham | Walworth | 20:30 local · NCEI |
| Aug 26, 1998 | 1.75 ingolf ball | 1 S Glenham | Walworth | 18:22 local · NCEI |
| Jul 6, 1992 | 1.75 ingolf ball | — | Walworth | 05:30 local · NCEI |
| Aug 17, 1990 | 0.75 inpenny | — | Walworth | 17:29 local · NCEI |
Hail history near Glenham
- Mobridge 13 km · 38
- Selby 19 km · 30
- Mound City 27 km · 12
- Java 30 km · 17
- Herreid 37 km · 18
- Pollock 41 km · 15
- Little Eagle 44 km · 17
- Bowdle 49 km · 23
Questions about hail in Glenham
How often does it hail in Glenham, South Dakota?
10 hail reports have been logged in and within about 5 km (3 miles) of Glenham since 1990. Over the 20 years 2006–2025 that averages 0.3 reports a year. That ranks #294 of 305 South Dakota places by number of reports.
When is hail season in Glenham?
Most reports come in August, July. August alone accounts for 80% of all reports.
What is the largest hail recorded in Glenham?
1.75 in (golf ball size) on August 26, 2008 near Glenham. 0% of reports here were 2 inches or larger.
When did it last hail in Glenham?
The most recent report in this data is from August 24, 2026 (1.00 in). Final NOAA data runs to July 31, 2026; preliminary NWS reports run to November 3, 2026.
How many hail storms has Glenham had in the last five years?
1 separate days with hail reports since November 3, 2021, adding up to 1 reports. The most recent was August 24, 2026.
Where does this hail data come from?
Hail reports come from the NOAA NCEI Storm Events Database, which the National Weather Service compiles from spotter, public, law enforcement and media reports. Recent days use preliminary NWS Local Storm Reports via the Iowa Environmental Mesonet until NOAA publishes final data. Only reported hail is counted, so areas with fewer people tend to have fewer reports.