Hail history for Jefferson County, Colorado
Every NOAA hail report filed in Jefferson County since 1960, with preliminary National Weather Service reports to November 3, 2026.
Readout · Jefferson County
- Last hail
- Aug 26, 2026
- 0.75 in, penny size · preliminary
- Hail days, last 5 years
- 20
- since Nov 3, 2021 · 93 reports
- Largest ever
- 3.00 in
- teacup · Jun 13, 1984
530 reports on 197 days since 1960 · #12 of 54 Colorado counties
Hail map · Jefferson County
- Under 1 in
- 1–1.75 in
- 1.75–2.5 in
- 2.5–4 in
- 4 in +
- No size
For homeowners
Roof damage after hail? Get a free inspection
Hail bruises shingles and cracks seals in ways you can't see from the ground, and most insurers set a claim deadline after the storm. The latest hail report in Jefferson County is from August 26, 2026. A local roofer can check and document it at no cost.
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What the record says about Jefferson County
The latest hail report in Jefferson County is from August 26, 2026, 0.75 in (penny size). Since November 3, 2021 there have been 20 separate hail days; the biggest stones in that time were 2.50 in on June 22, 2023.
Over the 20 years 2006–2025, Jefferson County logged 276 reports on 84 hail days, about 13.8 reports a year. That is 4.4 times the median Colorado county (3.1 a year) and ranks #12 of 54 Colorado counties for all-time reports. Jefferson County holds 3% of all 15,580 hail reports in Colorado.
5% of reports with a size were 2 inches (hen egg) or larger, against 6% for the median Colorado county. The largest hail on record here is 3.00 in (teacup) on June 13, 1984.
Reports were up 21% in 2016–2025 (151) compared with 2006–2015 (125). The busiest year was 2023, with 46 reports on 7 days. Hail here peaks in June (41% of reports); 62% fall between April and June.
Reports a year 2006–2025 average
- Jefferson County 13.8
- Median Colorado county 3.1
Hail days 2006–2025
- Jefferson County 84
- Median Colorado county 41
Share 2 in or larger of sized reports
- Jefferson County 5%
- Median Colorado county 6%
Hail over time
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Total |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 22 | 2 | 24 | ||||||||||
| 2025 | 1 | 3 | 2 | 6 | 12 | ||||||||
| 2024 | 4 | 5 | 9 | ||||||||||
| 2023 | 2 | 36 | 3 | 5 | 46 | ||||||||
| 2022 | 2 | 2 | |||||||||||
| 2021 | 12 | 3 | 15 | ||||||||||
| 2020 | 2 | 2 | |||||||||||
| 2019 | 10 | 2 | 3 | 15 | |||||||||
| 2018 | 5 | 5 | 2 | 4 | 16 | ||||||||
| 2017 | 19 | 1 | 20 |
Hail days since Nov 3, 2021
| Date | Reports | Largest | Storm page |
|---|---|---|---|
| Aug 26, 2026 | 2 | 0.75 in | View |
| Jun 26, 2026 | 1 | 1.00 in | — |
| Jun 24, 2026 | 3 | 1.00 in | — |
| Jun 8, 2026 | 18 | 1.75 in | — |
| Aug 23, 2025 | 5 | 1.50 in | — |
| Aug 10, 2025 | 1 | 0.75 in | — |
| Jul 6, 2025 | 2 | 1.50 in | — |
| Jun 17, 2025 | 3 | 0.75 in | — |
| May 14, 2025 | 1 | 0.75 in | — |
| Jun 29, 2024 | 5 | 1.00 in | — |
| May 30, 2024 | 2 | 1.25 in | — |
| May 20, 2024 | 2 | 0.75 in | — |
| Aug 6, 2023 | 1 | 0.88 in | — |
| Aug 1, 2023 | 4 | 1.25 in | — |
| Jul 8, 2023 | 3 | 1.25 in | — |
| Jun 29, 2023 | 5 | 1.50 in | — |
| Jun 22, 2023 | 20 | 2.50 in | — |
| Jun 21, 2023 | 11 | 2.00 in | — |
| May 26, 2023 | 2 | 1.00 in | — |
| Aug 20, 2022 | 2 | 1.25 in | — |
Largest hail on record
| Date | Size | Location | Damage | Time · source |
|---|---|---|---|---|
| Jun 13, 1984 | 3.00 inteacup | — | — | 15:45 local · NCEI |
| May 8, 2017 | 2.75 inbaseball | 1.38 N Edgewater | $2.3 billion | 14:05 local · NCEI |
| Jul 11, 1990 | 2.75 inbaseball | — | —13 injured | 14:10 local · NCEI |
| Jul 15, 1985 | 2.75 inbaseball | — | — | 16:12 local · NCEI |
| Jun 3, 1985 | 2.75 inbaseball | — | — | 14:45 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
- Under 1 in 160 30%
- 1–2 in 345 65%
- 2 in + 25 5%
Most recent reports
| Date | Size | Location | Time · source |
|---|---|---|---|
| Aug 26, 2026 | 0.75 inpenny | 2 NE Lakewood | 00:38 UTC · NWS prelim. |
| Aug 26, 2026 | 0.75 inpenny | 2 NE Wheat Ridge | 00:25 UTC · NWS prelim. |
| Jun 26, 2026 | 1.00 inquarter | 2.33 SSE Broomfield | 13:05 local · NCEI |
| Jun 24, 2026 | 1.00 inquarter | 1.74 SE Morrison | 20:41 local · NCEI |
| Jun 24, 2026 | 1.00 inquarter | 1.74 SE Morrison | 20:41 local · NCEI |
| Jun 24, 2026 | 1.00 inquarter | 2.62 SW Bergen Park | 20:28 local · NCEI |
| Jun 8, 2026 | 1.00 inquarter | 1.74 SW Golden | 14:56 local · NCEI |
| Jun 8, 2026 | 0.75 inpenny | 1.38 S Jefferson Co Arpt | 14:34 local · NCEI |
| Jun 8, 2026 | 1.00 inquarter | 1.74 ENE Bergen Park | 14:30 local · NCEI |
| Jun 8, 2026 | 1.50 inping pong ball | 0.87 NE Arvada | 14:30 local · NCEI |
| Jun 8, 2026 | 1.75 ingolf ball | 2.24 WNW Kittredge | 14:30 local · NCEI |
| Jun 8, 2026 | 0.75 inpenny | 1.27 ENE Arvada | 14:27 local · NCEI |
Cities and towns in Jefferson County
| Place | Reports | Largest |
|---|---|---|
| Lakewood | 126 | 2.75 in |
| Arvada | 84 | 3.00 in |
| Golden | 40 | 2.00 in |
| Evergreen | 31 | 1.75 in |
| Dakota Ridge | 27 | 1.75 in |
| Wheat Ridge | 26 | 2.75 in |
| Aspen Park | 25 | 1.75 in |
| Coal Creek | 21 | 2.00 in |
| Ken Caryl | 19 | 1.75 in |
| Columbine | 15 | 2.75 in |
| Indian Hills | 11 | 2.50 in |
| Genesee | 10 | 1.50 in |
Smaller places with fewer than 10 reports
These places have too few reports for a page of their own, so their record lives here.
| Place | Reports | Hail days | Latest |
|---|---|---|---|
| West Pleasant View | 7 | 6 | May 29, 2007 |
| Kittredge | 6 | 6 | Jun 22, 2023 |
| Edgewater | 2 | 2 | Jul 6, 2025 |
| Fairmount | 2 | 2 | Jun 8, 2026 |
| Applewood | 1 | 1 | Apr 19, 2005 |
| Columbine Valley | 1 | 1 | Jun 18, 2004 |
| Eldorado Springs | 1 | 1 | Sep 7, 1989 |
| Morrison | 1 | 1 | Jun 21, 2010 |
| Mountain View | 1 | 1 | May 8, 2017 |
Questions about hail in Jefferson County
How often does it hail in Jefferson County, Colorado?
530 hail reports have been logged in Jefferson County since 1960. Over the 20 years 2006–2025 that averages 13.8 reports a year. That ranks #12 of 54 Colorado counties by number of reports.
When is hail season in Jefferson County?
Most reports come in June, May, July. June alone accounts for 41% of all reports.
What is the largest hail recorded in Jefferson County?
3.00 in (teacup size) on June 13, 1984. 5% of reports here were 2 inches or larger.
When did it last hail in Jefferson County?
The most recent report in this data is from August 26, 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 Jefferson County had in the last five years?
20 separate days with hail reports since November 3, 2021, adding up to 93 reports. The most recent was August 26, 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.