Hail History

Hail history for Grafton, Illinois

NOAA hail reports in and within about 5 km (3 miles) of Grafton since 1959, with preliminary reports to November 3, 2026.

Readout · Grafton

Last hail
Jun 25, 2011
2.00 in, hen egg size
Hail days, last 5 years
0
since Nov 3, 2021 · 0 reports
Largest ever
2.00 in
hen egg · Jun 25, 2011

15 reports on 13 days since 1959 · #180 of 378 Illinois places

Hail map · Grafton

Grafton Fieldon Godfrey Jerseyville Brighton Medora 5 mi
  • Under 1 in
  • 1–1.75 in
  • 1.75–2.5 in
  • 2.5–4 in
  • 4 in +
  • No size
15 most recent reports with a location; Jersey County is shaded. Open street map

For homeowners

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What the record says about Grafton

The latest hail report in and around Grafton is from June 25, 2011, 2.00 in (hen egg size). There has been no hail report here in the five years since November 3, 2021.

Over the 20 years 2006–2025, Grafton logged 7 reports on 6 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 #180 of 378 Illinois cities and towns on this site for all-time reports. Grafton accounts for 18% of the 85 reports filed in Jersey County.

7% 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 2.00 in (hen egg) on June 25, 2011 near Grafton.

The busiest year was 2008, with 4 reports on 3 days. Hail here peaks in May (47% of reports); 80% fall between April and June.

Reports a year 2006–2025 average

  • Grafton 0.3
  • Jersey County 2.1
  • Median Illinois town on this site 0.5

Hail days 2006–2025

  • Grafton 6
  • Jersey County 24
  • Median Illinois town on this site 8

Share 2 in or larger of sized reports

  • Grafton 7%
  • Jersey County 6%
  • Median Illinois town on this site 4%

Hail over time

01234 1959: 1 reports, largest 1.00 in 1960 1970 1980 1983: 1 reports, largest 1.75 in 1990 1996: 1 reports, largest 1.75 in 1997: 1 reports, largest 1.00 in 1998: 1 reports, largest 0.75 in 2000 2003: 3 reports, largest 1.75 in 2006: 1 reports, largest 0.88 in 2008: 4 reports, largest 1.00 in 2010 2011: 2 reports, largest 2.00 in 2020
Reports per year, 1959–2026. Bar colour shows the largest hail that year. Reporting grew sharply after the mid-1990s, so early decades undercount.
02468 Jan February: 2 reports (13%) Feb Mar April: 2 reports (13%) Apr May: 7 reports (47%) May June: 3 reports (20%) Jun Jul Aug Sep October: 1 reports (7%) Oct Nov Dec
All 15 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 Grafton
Date Size Location County Time · source
Jun 25, 2011 2.00 inhen egg Grafton Jersey 18:40 local · NCEI
Apr 4, 2003 1.75 ingolf ball Grafton Jersey 13:36 local · NCEI
May 3, 1996 1.75 ingolf ball Grafton Jersey 15:35 local · NCEI
Jun 5, 1983 1.75 ingolf ball — Jersey 16:44 local · NCEI
Apr 19, 2011 1.50 inping pong ball 0.82 E Grafton Jersey 16:55 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 Grafton
Date Size Location County Time · source
Jun 25, 2011 2.00 inhen egg Grafton Jersey 18:40 local · NCEI
Apr 19, 2011 1.50 inping pong ball 0.82 E Grafton Jersey 16:55 local · NCEI
May 31, 2008 1.00 inquarter Grafton Jersey 18:17 local · NCEI
May 31, 2008 1.00 inquarter 4 S Otterville Jersey 18:10 local · NCEI
Feb 5, 2008 0.75 inpenny Grafton Jersey 16:05 local · NCEI
Feb 3, 2008 1.00 inquarter Grafton Jersey 16:08 local · NCEI
Jun 22, 2006 0.88 innickel Grafton Jersey 15:15 local · NCEI
May 4, 2003 1.00 inquarter Grafton Jersey 16:14 local · NCEI
May 4, 2003 0.88 innickel Grafton Jersey 16:12 local · NCEI
Apr 4, 2003 1.75 ingolf ball Grafton Jersey 13:36 local · NCEI
May 1, 1998 0.75 inpenny Grafton Jersey 17:15 local · NCEI
May 2, 1997 1.00 inquarter Grafton Jersey 22:50 local · NCEI

Hail history near Grafton

Questions about hail in Grafton

How often does it hail in Grafton, Illinois?

15 hail reports have been logged in and within about 5 km (3 miles) of Grafton since 1959. Over the 20 years 2006–2025 that averages 0.3 reports a year. That ranks #180 of 378 Illinois places by number of reports.

When is hail season in Grafton?

Most reports come in May, June, February. May alone accounts for 47% of all reports.

What is the largest hail recorded in Grafton?

2.00 in (hen egg size) on June 25, 2011 near Grafton. 7% of reports here were 2 inches or larger.

When did it last hail in Grafton?

The most recent report in this data is from June 25, 2011 (2.00 in). Final NOAA data runs to July 31, 2026; preliminary NWS reports run to November 3, 2026.

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

None: there has been no hail report in and within about 5 km (3 miles) of Grafton since November 3, 2021. The last one was on June 25, 2011.

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.