Hail history for Jefferson County, Idaho
Every NOAA hail report filed in Jefferson County since 1970, with preliminary National Weather Service reports to November 3, 2026.
Readout · Jefferson County
- Last hail
- Sep 17, 2026
- 1.00 in, quarter size · preliminary
- Hail days, last 5 years
- 3
- since Nov 3, 2021 · 3 reports
- Largest ever
- 1.75 in
- golf ball · Jun 13, 1998
30 reports on 24 days since 1970 · #14 of 45 Idaho counties
Hail map · Jefferson County
- 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 Jefferson County
The latest hail report in Jefferson County is from September 17, 2026, 1.00 in (quarter size). Since November 3, 2021 there have been 3 separate hail days; the biggest stones in that time were 1.00 in on September 17, 2026.
Over the 20 years 2006–2025, Jefferson County logged 14 reports on 11 hail days, about 0.7 reports a year. That is 40% more than the median Idaho county (0.5 a year) and ranks #14 of 45 Idaho counties for all-time reports. Jefferson County holds 3% 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 June 13, 1998 near Rigby.
Reports held about level in 2016–2025 (7) compared with 2006–2015 (7). The busiest year was 2018, with 3 reports on 1 day. Hail here peaks in June (30% of reports); 53% fall between April and June.
Reports a year 2006–2025 average
- Jefferson County 0.7
- Median Idaho county 0.5
Hail days 2006–2025
- Jefferson County 11
- Median Idaho county 8
Share 2 in or larger of sized reports
- Jefferson County 0%
- Median Idaho county 0%
Hail over time
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Total |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 1 | 1 | |||||||||||
| 2025 | 0 | ||||||||||||
| 2024 | 1 | 1 | |||||||||||
| 2023 | 1 | 1 | |||||||||||
| 2022 | 0 | ||||||||||||
| 2021 | 0 | ||||||||||||
| 2020 | 0 | ||||||||||||
| 2019 | 0 | ||||||||||||
| 2018 | 3 | 3 | |||||||||||
| 2017 | 0 |
Hail days since Nov 3, 2021
| Date | Reports | Largest | Storm page |
|---|---|---|---|
| Sep 17, 2026 | 1 | 1.00 in | View |
| Aug 13, 2024 | 1 | 1.00 in | — |
| Jun 23, 2023 | 1 | 1.00 in | — |
Largest hail on record
| Date | Size | Location | Time · source |
|---|---|---|---|
| Jun 13, 1998 | 1.75 ingolf ball | Rigby | 19:30 local · NCEI |
| Jul 9, 1983 | 1.75 ingolf ball | — | 15:30 local · NCEI |
| May 19, 1977 | 1.75 ingolf ball | — | 17:00 local · NCEI |
| May 31, 1997 | 1.50 inping pong ball | 2 N Terreton | 16:12 local · NCEI |
| Jun 5, 1995 | 1.50 inping pong ball | Terreton | 15:10 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 7 23%
- 1–2 in 23 77%
- 2 in + 0 0%
Most recent reports
| Date | Size | Location | Damage | Time · source |
|---|---|---|---|---|
| Sep 17, 2026 | 1.00 inquarter | Menan | — | 02:00 UTC · NWS prelim. |
| Aug 13, 2024 | 1.00 inquarter | 3 WNW Lewisville | — | 14:42 local · NCEI |
| Jun 23, 2023 | 1.00 inquarter | 1 NNW Terreton | — | 13:18 local · NCEI |
| May 31, 2018 | 1.00 inquarter | Roberts | — | 19:00 local · NCEI |
| May 31, 2018 | 1.00 inquarter | 11 NE Roberts | — | 16:20 local · NCEI |
| May 31, 2018 | 1.25 inhalf dollar | Roberts | — | 16:11 local · NCEI |
| Oct 6, 2016 | 0.25 inpea | Rigby | $9K | 15:15 local · NCEI |
| Oct 2, 2016 | 1.00 inquarter | Roberts | — | 16:25 local · NCEI |
| Apr 8, 2015 | 0.25 inpea | Roberts | $1K | 16:30 local · NCEI |
| Aug 21, 2014 | 1.00 inquarter | 4 WNW Lorenzo | — | 16:30 local · NCEI |
| Aug 21, 2014 | 1.00 inquarter | Roberts | — | 16:15 local · NCEI |
| Aug 28, 2010 | 1.00 inquarter | 6 SSE Lorenzo | — | 12:36 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.
| Place | Reports | Hail days | Latest |
|---|---|---|---|
| Roberts | 7 | 6 | Aug 13, 2024 |
| Rigby | 5 | 4 | Oct 6, 2016 |
| Ririe | 4 | 4 | Aug 28, 2010 |
| Mud Lake | 3 | 3 | Jun 23, 2023 |
| Menan | 2 | 2 | Sep 17, 2026 |
Questions about hail in Jefferson County
How often does it hail in Jefferson County, Idaho?
30 hail reports have been logged in Jefferson County since 1970. Over the 20 years 2006–2025 that averages 0.7 reports a year. That ranks #14 of 45 Idaho counties by number of reports.
When is hail season in Jefferson County?
Most reports come in June, May, August. June alone accounts for 30% of all reports.
What is the largest hail recorded in Jefferson County?
1.75 in (golf ball size) on June 13, 1998 near Rigby. 0% of reports here were 2 inches or larger.
When did it last hail in Jefferson County?
The most recent report in this data is from September 17, 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 Jefferson County had in the last five years?
3 separate days with hail reports since November 3, 2021, adding up to 3 reports. The most recent was September 17, 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.