Hail History

Hail history for Johnson Siding, South Dakota

NOAA hail reports in and within about 5 km (3 miles) of Johnson Siding since 1980, with preliminary reports to November 3, 2026.

Readout · Johnson Siding

Last hail
Aug 11, 2026
1.75 in, golf ball size · preliminary
Hail days, last 5 years
8
since Nov 3, 2021 · 14 reports
Largest ever
4.50 in
softball · Aug 8, 2020

125 reports on 76 days since 1980 · #4 of 305 South Dakota places

Hail map · Johnson Siding

Johnson Siding Blackhawk Colonial Pine Hills Summerset Piedmont Rapid City Hill City Keystone Rapid Valley 25 mi
  • Under 1 in
  • 1–1.75 in
  • 1.75–2.5 in
  • 2.5–4 in
  • 4 in +
  • No size
125 most recent reports with a location; Pennington County is shaded. Open street map

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What the record says about Johnson Siding

The latest hail report in and around Johnson Siding is from August 11, 2026, 1.75 in (golf ball size). Since November 3, 2021 there have been 8 separate hail days; the biggest stones in that time were 3.00 in on July 30, 2023.

Over the 20 years 2006–2025, Johnson Siding logged 91 reports on 51 hail days, about 4.5 reports a year. That is 10.1 times the median South Dakota town on this site (0.5 a year) and ranks #4 of 305 South Dakota cities and towns on this site for all-time reports. Johnson Siding accounts for 8% of the 1,654 reports filed in Pennington County.

14% 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 4.50 in (softball) on August 8, 2020 near 1 N Pactola Reservoir.

Reports were up 53% in 2016–2025 (55) compared with 2006–2015 (36). The busiest year was 2020, with 14 reports on 7 days. Hail here peaks in July (48% of reports); 27% fall between April and June.

Reports a year 2006–2025 average

  • Johnson Siding 4.5
  • Pennington County 55.0
  • Median South Dakota town on this site 0.5

Hail days 2006–2025

  • Johnson Siding 51
  • Pennington County 308
  • Median South Dakota town on this site 7

Share 2 in or larger of sized reports

  • Johnson Siding 14%
  • Pennington County 11%
  • Median South Dakota town on this site 7%

Hail over time

051015 1980: 1 reports, largest 1.50 in 1980 1984: 1 reports, largest 1.75 in 1989: 2 reports, largest 1.75 in 1990 1991: 3 reports, largest 1.50 in 1996: 4 reports, largest 2.00 in 1997: 5 reports, largest 2.00 in 1999: 3 reports, largest 1.00 in 2000: 2 reports, largest 1.75 in 2000 2001: 5 reports, largest 1.75 in 2003: 3 reports, largest 1.50 in 2005: 1 reports, largest 0.88 in 2007: 6 reports, largest 1.00 in 2009: 1 reports, largest 0.88 in 2010: 2 reports, largest 1.75 in 2010 2011: 11 reports, largest 2.75 in 2012: 1 reports, largest 0.75 in 2013: 8 reports, largest 4.25 in 2014: 3 reports, largest 1.75 in 2015: 4 reports, largest 1.75 in 2016: 7 reports, largest 1.75 in 2017: 4 reports, largest 1.50 in 2018: 6 reports, largest 2.75 in 2019: 12 reports, largest 2.25 in 2020: 14 reports, largest 4.50 in 2020 2021: 2 reports, largest 1.00 in 2023: 8 reports, largest 3.00 in 2024: 2 reports, largest 1.75 in 2026: 4 reports, largest 2.50 in
Reports per year, 1980–2026. Bar colour shows the largest hail that year. Reporting grew sharply after the mid-1990s, so early decades undercount.
0204060 Jan Feb Mar Apr May: 6 reports (5%) May June: 28 reports (22%) Jun July: 60 reports (48%) Jul August: 29 reports (23%) Aug September: 1 reports (1%) Sep October: 1 reports (1%) Oct Nov Dec
All 125 reports by calendar month.
Reports per month, 2017–2026. Darker cells had more reports.
YearJanFebMarAprMayJunJulAugSepOctNovDecTotal
2026 4 4
2025 0
2024 2 2
2023 17 8
2022 0
2021 2 2
2020 194 14
2019 192 12
2018 51 6
2017 4 4

Hail days since Nov 3, 2021

DateReportsLargestStorm page
Aug 11, 2026 3 2.50 in View
Aug 10, 2026 1 1.50 in View
Jun 25, 2024 1 1.25 in —
Jun 24, 2024 1 1.75 in —
Jul 30, 2023 4 3.00 in —
Jul 11, 2023 2 1.75 in —
Jul 3, 2023 1 0.75 in —
May 29, 2023 1 1.00 in —

Largest hail on record

Largest hail reports in Johnson Siding
Date Size Location County Damage Time · source
Aug 8, 2020 4.50 insoftball 1 N Pactola Reservoir Pennington —1 injured 16:10 local · NCEI
Aug 30, 2013 4.25 ingrapefruit 1.38 N Johnson Siding Pennington $500K 12:40 local · NCEI
Aug 8, 2020 4.00 ingrapefruit 1 N Pactola Reservoir Pennington — 16:05 local · NCEI
Jul 30, 2023 3.00 inteacup 1 SSE Pactola Reservoir Pennington — 13:00 local · NCEI
Aug 8, 2020 2.75 inbaseball 2 NNW Pactola Reservoir Pennington — 16:00 local · NCEI

Size of every report

Most recent reports

Most recent hail reports in Johnson Siding
Date Size Location County Time · source
Aug 11, 2026 1.75 ingolf ball 3 NNE Johnson Siding Pennington 20:31 UTC · NWS prelim.
Aug 11, 2026 2.50 intennis ball 3 NNW Johnson Siding Pennington 20:30 UTC · NWS prelim.
Aug 11, 2026 2.00 inhen egg 4 NNE Johnson Siding Pennington 20:30 UTC · NWS prelim.
Aug 10, 2026 1.50 inping pong ball 1 ESE Pactola Resv Pennington 23:03 UTC · NWS prelim.
Jun 25, 2024 1.25 inhalf dollar 1 NNW Hisega Pennington 15:47 local · NCEI
Jun 24, 2024 1.75 ingolf ball 4 N Johnson Siding Pennington 18:28 local · NCEI
Jul 30, 2023 2.50 intennis ball 2 S Pactola Reservoir Pennington 13:02 local · NCEI
Jul 30, 2023 3.00 inteacup 1 SSE Pactola Reservoir Pennington 13:00 local · NCEI
Jul 30, 2023 1.50 inping pong ball Johnson Siding Pennington 12:55 local · NCEI
Jul 30, 2023 2.00 inhen egg 1 ENE Pactola Reservoir Pennington 12:54 local · NCEI
Jul 11, 2023 1.75 ingolf ball Pactola Reservoir Pennington 21:00 local · NCEI
Jul 11, 2023 1.00 inquarter 2 NNE Johnson Siding Pennington 16:48 local · NCEI

Hail history near Johnson Siding

Questions about hail in Johnson Siding

How often does it hail in Johnson Siding, South Dakota?

125 hail reports have been logged in and within about 5 km (3 miles) of Johnson Siding since 1980. Over the 20 years 2006–2025 that averages 4.5 reports a year. That ranks #4 of 305 South Dakota places by number of reports.

When is hail season in Johnson Siding?

Most reports come in July, August, June. July alone accounts for 48% of all reports.

What is the largest hail recorded in Johnson Siding?

4.50 in (softball size) on August 8, 2020 near 1 N Pactola Reservoir. 14% of reports here were 2 inches or larger.

When did it last hail in Johnson Siding?

The most recent report in this data is from August 11, 2026 (1.75 in). Final NOAA data runs to July 31, 2026; preliminary NWS reports run to November 3, 2026.

How many hail storms has Johnson Siding had in the last five years?

8 separate days with hail reports since November 3, 2021, adding up to 14 reports. The most recent was August 11, 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.