Hail History

Hail history for Gillette, Wyoming

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

Readout · Gillette

Last hail
Jul 17, 2023
1.00 in, quarter size
Hail days, last 5 years
1
since Nov 3, 2021 · 4 reports
Largest ever
2.75 in
baseball · Jun 21, 2003

82 reports on 49 days since 1959 · #3 of 61 Wyoming places

Hail map · Gillette

Gillette Sleepy Hollow Moorcroft Pine Haven Wright 25 mi
  • Under 1 in
  • 1–1.75 in
  • 1.75–2.5 in
  • 2.5–4 in
  • 4 in +
  • No size
82 most recent reports with a location; Campbell County is shaded. Open street map

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What the record says about Gillette

The latest hail report in and around Gillette is from July 17, 2023, 1.00 in (quarter size). Since November 3, 2021 there has been one hail day; the biggest stones in that time were 1.50 in on July 17, 2023.

Over the 20 years 2006–2025, Gillette logged 62 reports on 31 hail days, about 3.1 reports a year. That is 4.8 times the median Wyoming town on this site (0.7 a year) and ranks #3 of 61 Wyoming cities and towns on this site for all-time reports. Gillette accounts for 14% of the 591 reports filed in Campbell County.

7% 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 2.75 in (baseball) on June 21, 2003 near Gillette.

Reports were up 126% in 2016–2025 (43) compared with 2006–2015 (19). The busiest year was 2020, with 19 reports on 6 days. Hail here peaks in June (38% of reports); 50% fall between April and June.

Reports a year 2006–2025 average

  • Gillette 3.1
  • Campbell County 21.1
  • Median Wyoming town on this site 0.7

Hail days 2006–2025

  • Gillette 31
  • Campbell County 183
  • Median Wyoming town on this site 11

Share 2 in or larger of sized reports

  • Gillette 7%
  • Campbell County 7%
  • Median Wyoming town on this site 7%

Hail over time

05101520 1959: 1 reports, largest 2.00 in 1960 1970 1976: 1 reports, largest 1.75 in 1977: 1 reports, largest 0.88 in 1978: 2 reports, largest 1.75 in 1979: 1 reports, largest 1.75 in 1980 1987: 2 reports, largest 0.75 in 1990 1996: 1 reports, largest 0.75 in 1998: 2 reports, largest 1.75 in 2000: 3 reports, largest 1.50 in 2000 2002: 2 reports, largest 0.75 in 2003: 1 reports, largest 2.75 in 2004: 1 reports, largest 0.75 in 2005: 2 reports, largest 0.88 in 2006: 2 reports, largest 1.00 in 2007: 8 reports, largest 1.75 in 2010: 3 reports, largest 1.75 in 2010 2011: 1 reports, largest 1.25 in 2012: 1 reports, largest 0.88 in 2013: 2 reports, largest 1.00 in 2015: 2 reports, largest 1.50 in 2016: 8 reports, largest 1.25 in 2018: 2 reports, largest 1.25 in 2019: 10 reports, largest 2.50 in 2020: 19 reports, largest 2.50 in 2020 2023: 4 reports, largest 1.50 in
Reports per year, 1959–2026. Bar colour shows the largest hail that year. Reporting grew sharply after the mid-1990s, so early decades undercount.
010203040 Jan Feb Mar Apr May: 10 reports (12%) May June: 31 reports (38%) Jun July: 25 reports (30%) Jul August: 13 reports (16%) Aug Sep October: 3 reports (4%) Oct Nov Dec
All 82 reports by calendar month.
Reports per month, 2017–2026. Darker cells had more reports.
YearJanFebMarAprMayJunJulAugSepOctNovDecTotal
2026 0
2025 0
2024 0
2023 4 4
2022 0
2021 0
2020 1108 19
2019 55 10
2018 11 2
2017 0

Hail days since Nov 3, 2021

DateReportsLargestStorm page
Jul 17, 2023 4 1.50 in —

Largest hail on record

Largest hail reports in Gillette
Date Size Location County Damage Time · source
Jun 21, 2003 2.75 inbaseball Gillette Campbell $17.0 million 13:09 local · NCEI
Jul 9, 2020 2.50 intennis ball 2 W Gillette Campbell — 19:55 local · NCEI
Aug 14, 2019 2.50 intennis ball 1 ENE Gillette Campbell — 21:17 local · NCEI
Jul 17, 2019 2.25 inhen egg 3 SSE Gillette Campbell — 16:10 local · NCEI
Jul 17, 2019 2.00 inhen egg Gillette Campbell — 16:15 local · NCEI

Size of every report

Most recent reports

Most recent hail reports in Gillette
Date Size Location County Time · source
Jul 17, 2023 1.00 inquarter 6 SSE Gillette Campbell 17:20 local · NCEI
Jul 17, 2023 1.25 inhalf dollar 1 S Gillette Campbell 17:20 local · NCEI
Jul 17, 2023 1.50 inping pong ball 3 S Gillette Campbell 17:15 local · NCEI
Jul 17, 2023 0.75 inpenny 3 ESE Gillette Campbell 17:12 local · NCEI
Jul 26, 2020 1.00 inquarter 1 SW Gillette Campbell 15:20 local · NCEI
Jul 9, 2020 1.50 inping pong ball 2 SSE Gillette Campbell 20:05 local · NCEI
Jul 9, 2020 1.25 inhalf dollar 1 SE Gillette Campbell 20:00 local · NCEI
Jul 9, 2020 1.25 inhalf dollar 1 SW Gillette Campbell 20:00 local · NCEI
Jul 9, 2020 1.50 inping pong ball 1 ESE Gillette Campbell 20:00 local · NCEI
Jul 9, 2020 1.75 ingolf ball 1 NW Gillette Campbell 20:00 local · NCEI
Jul 9, 2020 2.50 intennis ball 2 W Gillette Campbell 19:55 local · NCEI
Jul 9, 2020 1.50 inping pong ball 4 NNW Gillette Campbell 19:50 local · NCEI

Hail history near Gillette

Questions about hail in Gillette

How often does it hail in Gillette, Wyoming?

82 hail reports have been logged in and within about 5 km (3 miles) of Gillette since 1959. Over the 20 years 2006–2025 that averages 3.1 reports a year. That ranks #3 of 61 Wyoming places by number of reports.

When is hail season in Gillette?

Most reports come in June, July, August. June alone accounts for 38% of all reports.

What is the largest hail recorded in Gillette?

2.75 in (baseball size) on June 21, 2003 near Gillette. 7% of reports here were 2 inches or larger.

When did it last hail in Gillette?

The most recent report in this data is from July 17, 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 Gillette had in the last five years?

1 separate days with hail reports since November 3, 2021, adding up to 4 reports. The most recent was July 17, 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.