Hail History

Hail history for Butte-Silver Bow, Montana

NOAA hail reports in and within about 5 km (3 miles) of Butte-Silver Bow since 1958, with preliminary reports to November 3, 2026.

Readout · Butte-Silver Bow

Last hail
Jul 16, 2026
2.00 in, hen egg size
Hail days, last 5 years
1
since Nov 3, 2021 · 2 reports
Largest ever
2.75 in
baseball · Aug 6, 2009

50 reports on 31 days since 1958 · #5 of 111 Montana places

Hail map · Butte-Silver Bow

Butte-Silver Bow Anaconda-Deer Lodge County 10 mi
  • Under 1 in
  • 1–1.75 in
  • 1.75–2.5 in
  • 2.5–4 in
  • 4 in +
  • No size
50 most recent reports with a location; Silver Bow County is shaded. Open street map

For homeowners

Concerned about your roof after hail?

Send a request to Moxisync Labs for review. The latest hail report in Butte-Silver Bow is from July 16, 2026. We’re building local roofer coverage. Submitting a request does not guarantee a quote or book an inspection.

Phone line opening soon

What would a claim cost you? Try the hail claim calculator

Roofer? Get hail alerts for your area with StormScope

What the record says about Butte-Silver Bow

The latest hail report in and around Butte-Silver Bow is from July 16, 2026, 2.00 in (hen egg size). Since November 3, 2021 there has been one hail day; the biggest stones in that time were 2.00 in on July 16, 2026.

Over the 20 years 2006–2025, Butte-Silver Bow logged 30 reports on 14 hail days, about 1.5 reports a year. That is 3.3 times the median Montana town on this site (0.5 a year) and ranks #5 of 111 Montana cities and towns on this site for all-time reports.

8% of reports with a size were 2 inches (hen egg) or larger, against 8% for the median Montana town on this site. The largest hail on record here is 2.75 in (baseball) on August 6, 2009 near 3 S Wise River.

Reports were down 42% in 2016–2025 (11) compared with 2006–2015 (19). The busiest year was 2009, with 9 reports on 1 day. Hail here peaks in August (42% of reports); 24% fall between April and June.

Reports a year 2006–2025 average

  • Butte-Silver Bow 1.5
  • Silver Bow County 1.3
  • Median Montana town on this site 0.5

Hail days 2006–2025

  • Butte-Silver Bow 14
  • Silver Bow County 13
  • Median Montana town on this site 7

Share 2 in or larger of sized reports

  • Butte-Silver Bow 8%
  • Silver Bow County 7%
  • Median Montana town on this site 8%

Hail over time

0369 1958: 2 reports, largest ? in 1960 1965: 1 reports, largest 1.75 in 1967: 1 reports, largest 0.75 in 1970 1975: 2 reports, largest 1.50 in 1976: 1 reports, largest 1.00 in 1980: 1 reports, largest 1.25 in 1980 1987: 1 reports, largest 1.50 in 1990 1996: 1 reports, largest 0.75 in 1997: 1 reports, largest 1.00 in 2000 2001: 1 reports, largest 1.50 in 2002: 2 reports, largest 1.00 in 2004: 1 reports, largest 0.75 in 2005: 3 reports, largest 1.75 in 2007: 1 reports, largest 0.88 in 2008: 5 reports, largest 1.25 in 2009: 9 reports, largest 2.75 in 2010 2011: 1 reports, largest 1.00 in 2013: 1 reports, largest 1.00 in 2014: 2 reports, largest 1.00 in 2016: 1 reports, largest 1.25 in 2017: 3 reports, largest 1.25 in 2019: 7 reports, largest 1.50 in 2020 2026: 2 reports, largest 2.00 in
Reports per year, 1958–2026. Bar colour shows the largest hail that year. Reporting grew sharply after the mid-1990s, so early decades undercount.
0102030 Jan Feb Mar Apr May: 2 reports (4%) May June: 10 reports (20%) Jun July: 17 reports (34%) Jul August: 21 reports (42%) Aug Sep Oct Nov Dec
All 50 reports by calendar month.
Reports per month, 2017–2026. Darker cells had more reports.
YearJanFebMarAprMayJunJulAugSepOctNovDecTotal
2026 2 2
2025 0
2024 0
2023 0
2022 0
2021 0
2020 0
2019 43 7
2018 0
2017 3 3

Hail days since Nov 3, 2021

DateReportsLargestStorm page
Jul 16, 2026 2 2.00 in —

Largest hail on record

Largest hail reports in Butte-Silver Bow
Date Size Location County Damage Time · source
Aug 6, 2009 2.75 inbaseball 3 S Wise River Beaverhead — 15:15 local · NCEI
Aug 6, 2009 2.50 intennis ball 2.81 S Rocker Silver Bow — 14:00 local · NCEI
Jul 16, 2026 2.00 inhen egg 12.14 NNW Maiden Rock Silver Bow — 16:37 local · NCEI
Aug 6, 2009 2.00 inhen egg 1.92 E (Btm)mooney Arpt But Silver Bow $50K 14:10 local · NCEI
Aug 6, 2009 1.75 ingolf ball 11.8 NW Maiden Rock Silver Bow — 13:15 local · NCEI

Size of every report

Most recent reports

Most recent hail reports in Butte-Silver Bow
Date Size Location County Time · source
Jul 16, 2026 2.00 inhen egg 12.14 NNW Maiden Rock Silver Bow 16:37 local · NCEI
Jul 16, 2026 1.00 inquarter 0.44 SE Butte Silver Bow 16:30 local · NCEI
Aug 10, 2019 1.00 inquarter Butte Silver Bow 15:53 local · NCEI
Aug 10, 2019 1.00 inquarter 11.28 NW Maiden Rock Silver Bow 15:15 local · NCEI
Aug 10, 2019 1.50 inping pong ball 1 WNW Ramsay Silver Bow 14:51 local · NCEI
Jul 30, 2019 1.00 inquarter 2.04 SW Newcomb Silver Bow 16:00 local · NCEI
Jul 16, 2019 1.00 inquarter 8.05 NNW Maiden Rock Silver Bow 20:10 local · NCEI
Jul 16, 2019 1.00 inquarter Dewey Beaverhead 20:10 local · NCEI
Jul 16, 2019 1.00 inquarter 4.81 SSW Homestake Jefferson 18:40 local · NCEI
Jul 10, 2017 1.00 inquarter 2 SW Newcomb Silver Bow 15:30 local · NCEI
Jul 10, 2017 1.25 inhalf dollar 6 SE Janney Silver Bow 14:29 local · NCEI
Jul 10, 2017 1.25 inhalf dollar 5.55 S Homestake Jefferson 14:29 local · NCEI

Hail history near Butte-Silver Bow

Questions about hail in Butte-Silver Bow

How often does it hail in Butte-Silver Bow, Montana?

50 hail reports have been logged in and within about 5 km (3 miles) of Butte-Silver Bow since 1958. Over the 20 years 2006–2025 that averages 1.5 reports a year. That ranks #5 of 111 Montana places by number of reports.

When is hail season in Butte-Silver Bow?

Most reports come in August, July, June. August alone accounts for 42% of all reports.

What is the largest hail recorded in Butte-Silver Bow?

2.75 in (baseball size) on August 6, 2009 near 3 S Wise River. 8% of reports here were 2 inches or larger.

When did it last hail in Butte-Silver Bow?

The most recent report in this data is from July 16, 2026 (2.00 in). Final NOAA data runs to July 31, 2026; preliminary NWS reports run to November 3, 2026.

How many hail storms has Butte-Silver Bow had in the last five years?

1 separate days with hail reports since November 3, 2021, adding up to 2 reports. The most recent was July 16, 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.