Hail history for Altamont, Illinois
NOAA hail reports in and within about 5 km (3 miles) of Altamont since 1998, with preliminary reports to November 3, 2026.
Readout · Altamont
- Last hail
- Oct 18, 2025
- 0.75 in, penny size
- Hail days, last 5 years
- 4
- since Nov 3, 2021 · 4 reports
- Largest ever
- 1.25 in
- half dollar · Mar 14, 2025
12 reports on 12 days since 1998 · #244 of 378 Illinois places
Hail map · Altamont
- 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 Altamont is from October 18, 2025. A local roofer can check and document it at no cost.
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What the record says about Altamont
The latest hail report in and around Altamont is from October 18, 2025, 0.75 in (penny size). Since November 3, 2021 there have been 4 separate hail days; the biggest stones in that time were 1.25 in on March 14, 2025.
Over the 20 years 2006–2025, Altamont logged 7 reports on 7 hail days, about 0.3 reports a year. That is 30% less than the median Illinois town on this site (0.5 a year) and ranks #244 of 378 Illinois cities and towns on this site for all-time reports. Altamont accounts for 14% of the 86 reports filed in Effingham County.
0% of reports with a size were 2 inches (hen egg) or larger, against 4% for the median Illinois town on this site. The largest hail on record here is 1.25 in (half dollar) on March 14, 2025 near 0.69 S Altamont.
The busiest year was 2025, with 3 reports on 3 days. Hail here peaks in May (25% of reports); 33% fall between April and June.
Reports a year 2006–2025 average
- Altamont 0.3
- Effingham County 2.1
- Median Illinois town on this site 0.5
Hail days 2006–2025
- Altamont 7
- Effingham County 25
- Median Illinois town on this site 8
Share 2 in or larger of sized reports
- Altamont 0%
- Effingham County 6%
- Median Illinois town on this site 4%
Hail over time
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Total |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 0 | ||||||||||||
| 2025 | 1 | 1 | 1 | 3 | |||||||||
| 2024 | 0 | ||||||||||||
| 2023 | 1 | 1 | |||||||||||
| 2022 | 0 | ||||||||||||
| 2021 | 0 | ||||||||||||
| 2020 | 0 | ||||||||||||
| 2019 | 1 | 1 | |||||||||||
| 2018 | 0 | ||||||||||||
| 2017 | 0 |
Hail days since Nov 3, 2021
| Date | Reports | Largest | Storm page |
|---|---|---|---|
| Oct 18, 2025 | 1 | 0.75 in | — |
| Sep 20, 2025 | 1 | 1.00 in | — |
| Mar 14, 2025 | 1 | 1.25 in | — |
| Aug 6, 2023 | 1 | 1.00 in | — |
Largest hail on record
| Date | Size | Location | County | Time · source |
|---|---|---|---|---|
| Mar 14, 2025 | 1.25 inhalf dollar | 0.69 S Altamont | Effingham | 22:40 local · NCEI |
| Sep 20, 2025 | 1.00 inquarter | 1 S Altamont | Effingham | 13:00 local · NCEI |
| Aug 6, 2023 | 1.00 inquarter | Altamont | Effingham | 18:20 local · NCEI |
| Oct 19, 2016 | 1.00 inquarter | 0.69 S Altamont | Effingham | 19:30 local · NCEI |
| Apr 10, 2001 | 1.00 inquarter | Altamont | Effingham | 12:15 local · NCEI |
Size of every report
- Under 1 in 7 58%
- 1–2 in 5 42%
- 2 in + 0 0%
Most recent reports
| Date | Size | Location | County | Time · source |
|---|---|---|---|---|
| Oct 18, 2025 | 0.75 inpenny | 0.69 S Altamont | Effingham | 11:20 local · NCEI |
| Sep 20, 2025 | 1.00 inquarter | 1 S Altamont | Effingham | 13:00 local · NCEI |
| Mar 14, 2025 | 1.25 inhalf dollar | 0.69 S Altamont | Effingham | 22:40 local · NCEI |
| Aug 6, 2023 | 1.00 inquarter | Altamont | Effingham | 18:20 local · NCEI |
| May 29, 2019 | 0.75 inpenny | Altamont | Effingham | 17:45 local · NCEI |
| Oct 19, 2016 | 1.00 inquarter | 0.69 S Altamont | Effingham | 19:30 local · NCEI |
| Jul 3, 2011 | 0.88 innickel | Altamont | Effingham | 01:29 local · NCEI |
| Mar 30, 2005 | 0.88 innickel | Altamont | Effingham | 20:08 local · NCEI |
| Aug 2, 2002 | 0.75 inpenny | Altamont | Effingham | 15:10 local · NCEI |
| Apr 10, 2001 | 1.00 inquarter | Altamont | Effingham | 12:15 local · NCEI |
| May 12, 2000 | 0.75 inpenny | Altamont | Effingham | 18:30 local · NCEI |
| May 2, 1998 | 0.75 inpenny | Altamont | Effingham | 14:25 local · NCEI |
Hail history near Altamont
Questions about hail in Altamont
How often does it hail in Altamont, Illinois?
12 hail reports have been logged in and within about 5 km (3 miles) of Altamont since 1998. Over the 20 years 2006–2025 that averages 0.3 reports a year. That ranks #244 of 378 Illinois places by number of reports.
When is hail season in Altamont?
Most reports come in May, March, August. May alone accounts for 25% of all reports.
What is the largest hail recorded in Altamont?
1.25 in (half dollar size) on March 14, 2025 near 0.69 S Altamont. 0% of reports here were 2 inches or larger.
When did it last hail in Altamont?
The most recent report in this data is from October 18, 2025 (0.75 in). Final NOAA data runs to July 31, 2026; preliminary NWS reports run to November 3, 2026.
How many hail storms has Altamont had in the last five years?
4 separate days with hail reports since November 3, 2021, adding up to 4 reports. The most recent was October 18, 2025.
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.