Hail History

Hail history for Dayton, Wyoming

NOAA hail reports in and within about 5 km (3 miles) of Dayton since 1966, with preliminary reports to November 3, 2026.

Readout · Dayton

Last hail
May 26, 2023
1.00 in, quarter size
Hail days, last 5 years
2
since Nov 3, 2021 · 3 reports
Largest ever
1.75 in
golf ball · Aug 7, 2009

13 reports on 11 days since 1966 · #51 of 61 Wyoming places

Hail map · Dayton

Dayton Ranchester Sheridan Story 20 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; Sheridan County is shaded. Open street map

For homeowners

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What the record says about Dayton

The latest hail report in and around Dayton is from May 26, 2023, 1.00 in (quarter size). Since November 3, 2021 there have been 2 separate hail days; the biggest stones in that time were 1.00 in on May 26, 2023.

Over the 20 years 2006–2025, Dayton logged 7 reports on 6 hail days, about 0.3 reports a year. That is about half the median Wyoming town on this site (0.7 a year) and ranks #51 of 61 Wyoming cities and towns on this site for all-time reports. Dayton accounts for 6% of the 221 reports filed in Sheridan County.

0% of reports with a size were 2 inches (hen egg) or larger, against 7% for the median Wyoming town on this site. The largest hail on record here is 1.75 in (golf ball) on August 7, 2009 near 0.85 SE Dayton.

The busiest year was 2023, with 2 reports on 1 day. Hail here peaks in June (54% of reports); 69% fall between April and June.

Reports a year 2006–2025 average

  • Dayton 0.3
  • Sheridan County 7.2
  • Median Wyoming town on this site 0.7

Hail days 2006–2025

  • Dayton 6
  • Sheridan County 67
  • Median Wyoming town on this site 11

Share 2 in or larger of sized reports

  • Dayton 0%
  • Sheridan County 5%
  • Median Wyoming town on this site 7%

Hail over time

012 1966: 1 reports, largest 0.75 in 1970 1979: 1 reports, largest 1.75 in 1980 1981: 1 reports, largest 1.75 in 1990 2000 2001: 1 reports, largest 1.00 in 2004: 2 reports, largest 1.75 in 2008: 1 reports, largest 0.88 in 2009: 2 reports, largest 1.75 in 2010 2018: 1 reports, largest 1.00 in 2020 2022: 1 reports, largest 1.00 in 2023: 2 reports, largest 1.00 in
Reports per year, 1966–2026. Bar colour shows the largest hail that year. Reporting grew sharply after the mid-1990s, so early decades undercount.
02468 Jan Feb Mar Apr May: 2 reports (15%) May June: 7 reports (54%) Jun July: 1 reports (8%) Jul August: 3 reports (23%) Aug Sep Oct Nov Dec
All 13 reports by calendar month.
Reports per month, 2017–2026. Darker cells had more reports.
YearJanFebMarAprMayJunJulAugSepOctNovDecTotal
2026 0
2025 0
2024 0
2023 2 2
2022 1 1
2021 0
2020 0
2019 0
2018 1 1
2017 0

Hail days since Nov 3, 2021

DateReportsLargestStorm page
May 26, 2023 2 1.00 in —
Jun 20, 2022 1 1.00 in —

Largest hail on record

Largest hail reports in Dayton
Date Size Location County Time · source
Aug 7, 2009 1.75 ingolf ball 0.85 SE Dayton Sheridan 17:53 local · NCEI
Jun 10, 2004 1.75 ingolf ball Dayton Sheridan 14:45 local · NCEI
Jun 10, 2004 1.75 ingolf ball Dayton Sheridan 14:45 local · NCEI
Jun 6, 1981 1.75 ingolf ball — Sublette 19:12 local · NCEI
Jun 15, 1979 1.75 ingolf ball — Sheridan 20:25 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 Dayton
Date Size Location County Time · source
May 26, 2023 1.00 inquarter 0.85 SE Dayton Sheridan 16:57 local · NCEI
May 26, 2023 1.00 inquarter 0.49 E Dayton Sheridan 16:55 local · NCEI
Jun 20, 2022 1.00 inquarter Dayton Sheridan 13:25 local · NCEI
Jun 15, 2018 1.00 inquarter 0.85 SE Dayton Sheridan 16:23 local · NCEI
Aug 7, 2009 1.75 ingolf ball 0.85 SE Dayton Sheridan 17:53 local · NCEI
Aug 4, 2009 1.00 inquarter 0.85 SE Dayton Sheridan 14:35 local · NCEI
Jun 19, 2008 0.88 innickel 0.85 SE Dayton Sheridan 18:25 local · NCEI
Jun 10, 2004 1.75 ingolf ball Dayton Sheridan 14:45 local · NCEI
Jun 10, 2004 1.75 ingolf ball Dayton Sheridan 14:45 local · NCEI
Jul 26, 2001 1.00 inquarter Dayton Sheridan 18:35 local · NCEI
Jun 6, 1981 1.75 ingolf ball — Sublette 19:12 local · NCEI
Jun 15, 1979 1.75 ingolf ball — Sheridan 20:25 local · NCEI

Hail history near Dayton

Questions about hail in Dayton

How often does it hail in Dayton, Wyoming?

13 hail reports have been logged in and within about 5 km (3 miles) of Dayton since 1966. Over the 20 years 2006–2025 that averages 0.3 reports a year. That ranks #51 of 61 Wyoming places by number of reports.

When is hail season in Dayton?

Most reports come in June, August, May. June alone accounts for 54% of all reports.

What is the largest hail recorded in Dayton?

1.75 in (golf ball size) on August 7, 2009 near 0.85 SE Dayton. 0% of reports here were 2 inches or larger.

When did it last hail in Dayton?

The most recent report in this data is from May 26, 2023 (1.00 in). Final NOAA data runs to July 31, 2026; preliminary NWS reports run to November 3, 2026.

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

2 separate days with hail reports since November 3, 2021, adding up to 3 reports. The most recent was May 26, 2023.

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.