Hail History

Hail history for Gem County, Idaho

Every NOAA hail report filed in Gem County since 1964, with preliminary National Weather Service reports to November 3, 2026.

Readout · Gem County

Last hail
Aug 7, 2016
0.75 in, penny size
Hail days, last 5 years
0
since Nov 3, 2021 · 0 reports
Largest ever
1.75 in
golf ball · Apr 23, 1998

12 reports on 12 days since 1964 · #34 of 45 Idaho counties

Hail map · Gem County

20 mi
  • Under 1 in
  • 1–1.75 in
  • 1.75–2.5 in
  • 2.5–4 in
  • 4 in +
  • No size
11 most recent reports with a location. Dot size and colour follow hail size. Open street map

For homeowners

Concerned about your roof after hail?

Send a request to Moxisync Labs for review. The latest hail report in Gem County is from August 7, 2016. We’re building local roofer coverage. Submitting a request does not guarantee a quote or book an inspection.

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What the record says about Gem County

The latest hail report in Gem County is from August 7, 2016, 0.75 in (penny size). There has been no hail report here in the five years since November 3, 2021.

Over the 20 years 2006–2025, Gem County logged 2 reports on 2 hail days, about 0.1 reports a year. That is 20% of the median Idaho county (0.5 a year) and ranks #34 of 45 Idaho counties for all-time reports. Gem County holds 1% of all 1,140 hail reports in Idaho.

0% of reports with a size were 2 inches (hen egg) or larger, against 0% for the median Idaho county. The largest hail on record here is 1.75 in (golf ball) on April 23, 1998 near Sweet.

The busiest year was 1998, with 2 reports on 2 days. Hail here peaks in May (42% of reports); 92% fall between April and June.

Reports a year 2006–2025 average

  • Gem County 0.1
  • Median Idaho county 0.5

Hail days 2006–2025

  • Gem County 2
  • Median Idaho county 8

Share 2 in or larger of sized reports

  • Gem County 0%
  • Median Idaho county 0%

Hail over time

012 1964: 1 reports, largest 1.00 in 1966: 1 reports, largest 0.75 in 1970 1973: 1 reports, largest 0.75 in 1980 1981: 1 reports, largest 1.75 in 1984: 1 reports, largest 1.75 in 1986: 1 reports, largest 1.00 in 1990: 1 reports, largest 0.75 in 1990 1994: 1 reports, largest 1.00 in 1998: 2 reports, largest 1.75 in 2000 2010: 1 reports, largest 1.00 in 2010 2016: 1 reports, largest 0.75 in 2020
Reports per year, 1964–2026. Bar colour shows the largest hail that year. Reporting grew sharply after the mid-1990s, so early decades undercount.
0246 Jan Feb Mar April: 2 reports (17%) Apr May: 5 reports (42%) May June: 4 reports (33%) Jun Jul August: 1 reports (8%) Aug Sep Oct Nov Dec
All 12 reports by calendar month.
Reports per month, 2017–2026. Darker cells had more reports.
YearJanFebMarAprMayJunJulAugSepOctNovDecTotal
2026 0
2025 0
2024 0
2023 0
2022 0
2021 0
2020 0
2019 0
2018 0
2017 0

Largest hail on record

Largest hail reports in Gem County
Date Size Location Time · source
Apr 23, 1998 1.75 ingolf ball Sweet 16:00 local · NCEI
Jun 20, 1984 1.75 ingolf ball — 16:30 local · NCEI
Jun 6, 1981 1.75 ingolf ball — 20:30 local · NCEI
Jun 29, 2010 1.00 inquarter 20.73 N Sweet 19:00 local · NCEI
May 8, 1994 1.00 inquarter — 15:30 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

Most recent reports

Most recent hail reports in Gem County
Date Size Location Time · source
Aug 7, 2016 0.75 inpenny 0.32 NW Emmett 10:45 local · NCEI
Jun 29, 2010 1.00 inquarter 20.73 N Sweet 19:00 local · NCEI
Jun 25, 1998 0.75 inpenny 5 E Emmett 16:30 local · NCEI
Apr 23, 1998 1.75 ingolf ball Sweet 16:00 local · NCEI
May 8, 1994 1.00 inquarter — 15:30 local · NCEI
May 20, 1990 0.75 inpenny — 14:00 local · NCEI
Apr 22, 1986 1.00 inquarter — 17:00 local · NCEI
Jun 20, 1984 1.75 ingolf ball — 16:30 local · NCEI
Jun 6, 1981 1.75 ingolf ball — 20:30 local · NCEI
May 19, 1973 0.75 inpenny — 16:00 local · NCEI
May 30, 1966 0.75 inpenny — 15:00 local · NCEI
May 27, 1964 1.00 inquarter — 16:00 local · NCEI

Smaller places with fewer than 10 reports

These places have too few reports for a page of their own, so their record lives here.

PlaceReportsHail daysLatest
Emmett55Aug 7, 2016

Questions about hail in Gem County

How often does it hail in Gem County, Idaho?

12 hail reports have been logged in Gem County since 1964. Over the 20 years 2006–2025 that averages 0.1 reports a year. That ranks #34 of 45 Idaho counties by number of reports.

When is hail season in Gem County?

Most reports come in May, June, April. May alone accounts for 42% of all reports.

What is the largest hail recorded in Gem County?

1.75 in (golf ball size) on April 23, 1998 near Sweet. 0% of reports here were 2 inches or larger.

When did it last hail in Gem County?

The most recent report in this data is from August 7, 2016 (0.75 in). Final NOAA data runs to July 31, 2026; preliminary NWS reports run to November 3, 2026.

How many hail storms has Gem County had in the last five years?

None: there has been no hail report in Gem County since November 3, 2021. The last one was on August 7, 2016.

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.