Hail History

Hail history for Tuolumne County, California

Every NOAA hail report filed in Tuolumne County since 2005, with preliminary National Weather Service reports to November 3, 2026.

Readout · Tuolumne County

Last hail
Mar 11, 2023
1.00 in, quarter size
Hail days, last 5 years
1
since Nov 3, 2021 · 1 report
Largest ever
1.25 in
half dollar · Mar 21, 2017

6 reports on 5 days since 2005 · #43 of 47 California counties

Hail map · Tuolumne County

20 mi
  • Under 1 in
  • 1–1.75 in
  • 1.75–2.5 in
  • 2.5–4 in
  • 4 in +
  • No size
6 most recent reports with a location. Dot size and colour follow hail size. Open street map

For homeowners

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What the record says about Tuolumne County

The latest hail report in Tuolumne County is from March 11, 2023, 1.00 in (quarter size). Since November 3, 2021 there has been one hail day; the biggest stones in that time were 1.00 in on March 11, 2023.

Over the 20 years 2006–2025, Tuolumne County logged 5 reports on 4 hail days, about 0.3 reports a year. That is 38% less than the median California county (0.4 a year) and ranks #43 of 47 California counties for all-time reports. Tuolumne County holds 1% of all 938 hail reports in California.

0% of reports with a size were 2 inches (hen egg) or larger, against 0% for the median California county. The largest hail on record here is 1.25 in (half dollar) on March 21, 2017 near Groveland.

The busiest year was 2015, with 2 reports on 1 day. Hail here peaks in March (33% of reports); 17% fall between April and June.

Reports a year 2006–2025 average

  • Tuolumne County 0.3
  • Median California county 0.4

Hail days 2006–2025

  • Tuolumne County 4
  • Median California county 7

Share 2 in or larger of sized reports

  • Tuolumne County 0%
  • Median California county 0%

Hail over time

012 2005: 1 reports, largest 0.01 in 2005 2010 2015: 2 reports, largest 1.00 in 2015 2017: 1 reports, largest 1.25 in 2018: 1 reports, largest 1.00 in 2020 2023: 1 reports, largest 1.00 in 2025
Reports per year, 2005–2026. Bar colour shows the largest hail that year. Reporting grew sharply after the mid-1990s, so early decades undercount.
012 Jan Feb March: 2 reports (33%) Mar Apr May: 1 reports (17%) May Jun Jul August: 2 reports (33%) Aug September: 1 reports (17%) Sep Oct Nov Dec
All 6 reports by calendar month.
Reports per month, 2017–2026. Darker cells had more reports.
YearJanFebMarAprMayJunJulAugSepOctNovDecTotal
2026 0
2025 0
2024 0
2023 1 1
2022 0
2021 0
2020 0
2019 0
2018 1 1
2017 1 1

Hail days since Nov 3, 2021

DateReportsLargestStorm page
Mar 11, 2023 1 1.00 in —

Largest hail on record

Largest hail reports in Tuolumne County
Date Size Location Time · source
Mar 21, 2017 1.25 inhalf dollar Groveland 14:25 local · NCEI
Mar 11, 2023 1.00 inquarter 0.69 S Browns Flat 15:00 local · NCEI
May 1, 2018 1.00 inquarter 1.09 E Pinecrest 17:25 local · NCEI
Aug 1, 2015 1.00 inquarter 1.29 ESE Dardanelle 14:20 local · NCEI
Aug 1, 2015 0.88 innickel 7.27 SE Dardanelle 14:00 local · NCEI

Size of every report

Most recent reports

Most recent hail reports in Tuolumne County
Date Size Location Damage Time · source
Mar 11, 2023 1.00 inquarter 0.69 S Browns Flat — 15:00 local · NCEI
May 1, 2018 1.00 inquarter 1.09 E Pinecrest — 17:25 local · NCEI
Mar 21, 2017 1.25 inhalf dollar Groveland — 14:25 local · NCEI
Aug 1, 2015 1.00 inquarter 1.29 ESE Dardanelle — 14:20 local · NCEI
Aug 1, 2015 0.88 innickel 7.27 SE Dardanelle — 14:00 local · NCEI
Sep 26, 2005 0.01 inpea Groveland $1K 18:08 local · NCEI

Smaller places with fewer than 10 reports

These places have too few reports for a page of their own, so their record lives here.

PlaceReportsHail daysLatest
Groveland22Mar 21, 2017
Sonora11Mar 11, 2023
Strawberry11May 1, 2018

Questions about hail in Tuolumne County

How often does it hail in Tuolumne County, California?

6 hail reports have been logged in Tuolumne County since 2005. Over the 20 years 2006–2025 that averages 0.3 reports a year. That ranks #43 of 47 California counties by number of reports.

When is hail season in Tuolumne County?

Most reports come in March, August, May. March alone accounts for 33% of all reports.

What is the largest hail recorded in Tuolumne County?

1.25 in (half dollar size) on March 21, 2017 near Groveland. 0% of reports here were 2 inches or larger.

When did it last hail in Tuolumne County?

The most recent report in this data is from March 11, 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 Tuolumne County had in the last five years?

1 separate days with hail reports since November 3, 2021, adding up to 1 reports. The most recent was March 11, 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.