Hail history for Bonneville County, Idaho
Every NOAA hail report filed in Bonneville County since 1962, with preliminary National Weather Service reports to November 3, 2026.
Readout · Bonneville County
- Last hail
- Sep 17, 2026
- 1.00 in, quarter size · preliminary
- Hail days, last 5 years
- 8
- since Nov 3, 2021 · 13 reports
- Largest ever
- 2.75 in
- baseball · Sep 13, 2001
46 reports on 35 days since 1962 · #6 of 45 Idaho counties
Hail map · Bonneville County
- Under 1 in
- 1–1.75 in
- 1.75–2.5 in
- 2.5–4 in
- 4 in +
- No size
For homeowners
Roof damage after hail? Get a free inspection
Hail bruises shingles and cracks seals in ways you can't see from the ground, and most insurers set a claim deadline after the storm. The latest hail report in Bonneville County is from September 17, 2026. A local roofer can check and document it at no cost.
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What the record says about Bonneville County
The latest hail report in Bonneville County is from September 17, 2026, 1.00 in (quarter size). Since November 3, 2021 there have been 8 separate hail days; the biggest stones in that time were 1.25 in on August 10, 2024.
Over the 20 years 2006–2025, Bonneville County logged 30 reports on 21 hail days, about 1.5 reports a year. That is 3.0 times the median Idaho county (0.5 a year) and ranks #6 of 45 Idaho counties for all-time reports. Bonneville County holds 4% of all 1,140 hail reports in Idaho.
4% 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 2.75 in (baseball) on September 13, 2001 near 5 SW Idaho Falls.
Reports were up 50% in 2016–2025 (18) compared with 2006–2015 (12). The busiest year was 2022, with 5 reports on 4 days. Hail here peaks in June (30% of reports); 48% fall between April and June.
Reports a year 2006–2025 average
- Bonneville County 1.5
- Median Idaho county 0.5
Hail days 2006–2025
- Bonneville County 21
- Median Idaho county 8
Share 2 in or larger of sized reports
- Bonneville County 4%
- Median Idaho county 0%
Hail over time
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Total |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 2 | 2 | |||||||||||
| 2025 | 1 | 1 | |||||||||||
| 2024 | 4 | 4 | |||||||||||
| 2023 | 1 | 1 | |||||||||||
| 2022 | 2 | 2 | 1 | 5 | |||||||||
| 2021 | 0 | ||||||||||||
| 2020 | 1 | 1 | |||||||||||
| 2019 | 1 | 1 | |||||||||||
| 2018 | 1 | 2 | 3 | ||||||||||
| 2017 | 1 | 1 |
Hail days since Nov 3, 2021
| Date | Reports | Largest | Storm page |
|---|---|---|---|
| Sep 17, 2026 | 2 | 1.00 in | View |
| May 11, 2025 | 1 | 1.00 in | — |
| Aug 10, 2024 | 4 | 1.25 in | — |
| Aug 5, 2023 | 1 | 1.00 in | — |
| Sep 29, 2022 | 1 | 1.00 in | — |
| Aug 2, 2022 | 2 | 1.00 in | — |
| Jul 13, 2022 | 1 | 1.00 in | — |
| Jul 2, 2022 | 1 | 1.25 in | — |
Largest hail on record
| Date | Size | Location | Damage | Time · source |
|---|---|---|---|---|
| Sep 13, 2001 | 2.75 inbaseball | 5 SW Idaho Falls | — | 14:45 local · NCEI |
| Apr 7, 2018 | 2.00 inhen egg | Idaho Falls | $29.8 million | 18:05 local · NCEI |
| Jun 15, 2015 | 1.75 ingolf ball | 1 S Gray | — | 15:36 local · NCEI |
| May 8, 2016 | 1.50 inping pong ball | 2 SE Poplar | — | 18:10 local · NCEI |
| Aug 10, 2024 | 1.25 inhalf dollar | 5 SE Palisades | —2 injured | 12:36 local · NCEI |
Size of every report
- Under 1 in 16 35%
- 1–2 in 28 61%
- 2 in + 2 4%
Most recent reports
| Date | Size | Location | Damage | Time · source |
|---|---|---|---|---|
| Sep 17, 2026 | 1.00 inquarter | Idaho Falls | — | 05:00 UTC · NWS prelim. |
| Sep 17, 2026 | 1.00 inquarter | Idaho Falls | — | 04:15 UTC · NWS prelim. |
| May 11, 2025 | 1.00 inquarter | Swan Vly | — | 14:01 local · NCEI |
| Aug 10, 2024 | 1.25 inhalf dollar | 5 SE Palisades | —2 injured | 12:36 local · NCEI |
| Aug 10, 2024 | 1.25 inhalf dollar | 4 SE Palisades | —4 injured | 12:35 local · NCEI |
| Aug 10, 2024 | 1.25 inhalf dollar | 3 SE Palisades | — | 12:30 local · NCEI |
| Aug 10, 2024 | 1.00 inquarter | 2 S Palisades | — | 12:29 local · NCEI |
| Aug 5, 2023 | 1.00 inquarter | 4 S Hackman | — | 20:25 local · NCEI |
| Sep 29, 2022 | 1.00 inquarter | 1 WNW Swan Vly | — | 12:13 local · NCEI |
| Aug 2, 2022 | 1.00 inquarter | 1 S Irwin | — | 16:06 local · NCEI |
| Aug 2, 2022 | 1.00 inquarter | 2 WNW Irwin | — | 16:00 local · NCEI |
| Jul 13, 2022 | 1.00 inquarter | 2 SSW Iona | — | 15:48 local · NCEI |
Cities and towns in Bonneville County
| Place | Reports | Largest |
|---|---|---|
| Idaho Falls | 13 | 2.75 in |
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 |
|---|---|---|---|
| Ammon | 6 | 6 | Jul 13, 2022 |
| Swan Valley | 5 | 4 | May 11, 2025 |
| Ucon | 4 | 3 | Jun 20, 2004 |
| Irwin | 1 | 1 | Aug 2, 2022 |
Questions about hail in Bonneville County
How often does it hail in Bonneville County, Idaho?
46 hail reports have been logged in Bonneville County since 1962. Over the 20 years 2006–2025 that averages 1.5 reports a year. That ranks #6 of 45 Idaho counties by number of reports.
When is hail season in Bonneville County?
Most reports come in June, August, September. June alone accounts for 30% of all reports.
What is the largest hail recorded in Bonneville County?
2.75 in (baseball size) on September 13, 2001 near 5 SW Idaho Falls. 4% of reports here were 2 inches or larger.
When did it last hail in Bonneville 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 Bonneville County had in the last five years?
8 separate days with hail reports since November 3, 2021, adding up to 13 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.