Hail History

Hail history for Machesney Park, Illinois

NOAA hail reports in and within about 5 km (3 miles) of Machesney Park since 1971, with preliminary reports to November 3, 2026.

Readout · Machesney Park

Last hail
Aug 21, 2026
0.75 in, penny size · preliminary
Hail days, last 5 years
3
since Nov 3, 2021 · 4 reports
Largest ever
1.75 in
golf ball · May 15, 2017

13 reports on 11 days since 1971 · #228 of 378 Illinois places

Hail map · Machesney Park

Machesney Park Roscoe Rockton Rockford Poplar Grove Belvidere Winnebago Pecatonica Lake Summerset 5 mi
  • Under 1 in
  • 1–1.75 in
  • 1.75–2.5 in
  • 2.5–4 in
  • 4 in +
  • No size
13 most recent reports with a location; Winnebago County is shaded. Open street map

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What the record says about Machesney Park

The latest hail report in and around Machesney Park is from August 21, 2026, 0.75 in (penny size). Since November 3, 2021 there have been 3 separate hail days; the biggest stones in that time were 1.50 in on July 10, 2025.

Over the 20 years 2006–2025, Machesney Park logged 9 reports on 8 hail days, about 0.5 reports a year. That is 10% less than the median Illinois town on this site (0.5 a year) and ranks #228 of 378 Illinois cities and towns on this site for all-time reports. Machesney Park accounts for 6% of the 217 reports filed in Winnebago 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 1.75 in (golf ball) on May 15, 2017 near Machesney Park.

Reports were up 25% in 2016–2025 (5) compared with 2006–2015 (4). The busiest year was 2026, with 2 reports on 1 day. Hail here peaks in April (23% of reports); 54% fall between April and June.

Reports a year 2006–2025 average

  • Machesney Park 0.5
  • Winnebago County 7.3
  • Median Illinois town on this site 0.5

Hail days 2006–2025

  • Machesney Park 8
  • Winnebago County 67
  • Median Illinois town on this site 8

Share 2 in or larger of sized reports

  • Machesney Park 0%
  • Winnebago County 7%
  • Median Illinois town on this site 4%

Hail over time

012 1971: 1 reports, largest 0.75 in 1980 1990 2000 2005: 1 reports, largest 1.00 in 2008: 1 reports, largest 0.75 in 2010: 1 reports, largest 0.75 in 2010 2011: 1 reports, largest 0.75 in 2015: 1 reports, largest 1.00 in 2017: 1 reports, largest 1.75 in 2020: 2 reports, largest 1.50 in 2020 2023: 1 reports, largest 1.25 in 2025: 1 reports, largest 1.50 in 2026: 2 reports, largest 1.00 in
Reports per year, 1971–2026. Bar colour shows the largest hail that year. Reporting grew sharply after the mid-1990s, so early decades undercount.
0123 Jan Feb March: 1 reports (8%) Mar April: 3 reports (23%) Apr May: 1 reports (8%) May June: 3 reports (23%) Jun July: 3 reports (23%) Jul August: 2 reports (15%) Aug Sep Oct Nov Dec
All 13 reports by calendar month.
Reports per month, 2017–2026. Darker cells had more reports.
YearJanFebMarAprMayJunJulAugSepOctNovDecTotal
2026 2 2
2025 1 1
2024 0
2023 1 1
2022 0
2021 0
2020 2 2
2019 0
2018 0
2017 1 1

Hail days since Nov 3, 2021

DateReportsLargestStorm page
Aug 21, 2026 2 1.00 in View
Jul 10, 2025 1 1.50 in —
Jun 29, 2023 1 1.25 in —

Largest hail on record

Largest hail reports in Machesney Park
Date Size Location County Time · source
May 15, 2017 1.75 ingolf ball Machesney Park Winnebago 16:52 local · NCEI
Jul 10, 2025 1.50 inping pong ball Machesney Park Winnebago 16:09 local · NCEI
Apr 7, 2020 1.50 inping pong ball 2 NE Machesney Park Winnebago 18:06 local · NCEI
Jun 29, 2023 1.25 inhalf dollar Machesney Park Winnebago 02:23 local · NCEI
Aug 21, 2026 1.00 inquarter 1 N Machesney Park Winnebago 20:55 UTC · NWS prelim.

Size of every report

Most recent reports

Most recent hail reports in Machesney Park
Date Size Location County Time · source
Aug 21, 2026 0.75 inpenny 2 N Machesney Park Winnebago 20:56 UTC · NWS prelim.
Aug 21, 2026 1.00 inquarter 1 N Machesney Park Winnebago 20:55 UTC · NWS prelim.
Jul 10, 2025 1.50 inping pong ball Machesney Park Winnebago 16:09 local · NCEI
Jun 29, 2023 1.25 inhalf dollar Machesney Park Winnebago 02:23 local · NCEI
Apr 7, 2020 1.00 inquarter Machesney Park Winnebago 18:11 local · NCEI
Apr 7, 2020 1.50 inping pong ball 2 NE Machesney Park Winnebago 18:06 local · NCEI
May 15, 2017 1.75 ingolf ball Machesney Park Winnebago 16:52 local · NCEI
Jul 17, 2015 1.00 inquarter 1.38 N Machesney Park Winnebago 14:45 local · NCEI
Apr 19, 2011 0.75 inpenny 0.6 ESE Colonial Gardens Winnebago 16:33 local · NCEI
Mar 11, 2010 0.75 inpenny 0.74 SSW Colonial Gardens Winnebago 17:29 local · NCEI
Jul 7, 2008 0.75 inpenny 1.37 NNE Colonial Gardens Winnebago 19:37 local · NCEI
Jun 29, 2005 1.00 inquarter 2 N Loves Park Winnebago 17:15 local · NCEI

Hail history near Machesney Park

Questions about hail in Machesney Park

How often does it hail in Machesney Park, Illinois?

13 hail reports have been logged in and within about 5 km (3 miles) of Machesney Park since 1971. Over the 20 years 2006–2025 that averages 0.5 reports a year. That ranks #228 of 378 Illinois places by number of reports.

When is hail season in Machesney Park?

Most reports come in April, June, July. April alone accounts for 23% of all reports.

What is the largest hail recorded in Machesney Park?

1.75 in (golf ball size) on May 15, 2017 near Machesney Park. 0% of reports here were 2 inches or larger.

When did it last hail in Machesney Park?

The most recent report in this data is from August 21, 2026 (0.75 in). Final NOAA data runs to July 31, 2026; preliminary NWS reports run to November 3, 2026.

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

3 separate days with hail reports since November 3, 2021, adding up to 4 reports. The most recent was August 21, 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.