Hail and tornadoes in Jefferson County, CO

Since October 2020, radar estimated hail somewhere in Jefferson County, CO on 73 days. The biggest estimate: 3 in or larger (teacup), on Mon, Jan 3, 2022. Hail was reported to the National Weather Service inside the county on 13 days.

Still loading: radar estimates go back to Wed, Oct 14, 2020, and the earlier years are being added.

Days with hail

since October 2020

1 inch or larger

days, estimated or reported

Largest radar estimate

3+ in

Mon, Jan 3, 2022

Largest reported

2.5 in

Thu, Jun 22, 2023

Radar estimates are NOAA's MESH: the largest hail the radar estimates aloft, on cells about 0.7 mile across, shown as the lower bound of a size band (“1.5+”). They often run larger than what reached the ground, and they aren't evidence of damage at any address.

Radar-estimated hail on Mon, Jan 3, 2022 around the place, with the hail reported that day — Mon, Jan 3, 2022: radar-estimated hail around Jefferson County, CO, with the hail reported that day.

Hail on record since 1955

NOAA's Storm Events database lists 395 hail reports in Jefferson County, CO on 126 days, 18 of them 2 inches or larger. The largest: 2.75 in, near Edgewater, on Mon, May 8, 2017.

By decade: 1990s: 35 · 2000s: 126 · 2010s: 126 · 2020s: 108

Tornadoes since 1950

2 tornadoes have touched Jefferson County, CO since 1950, none of them rated F3/EF3 or stronger.

Every one

Sun, Jul 28, 1996 · F0 · 0.1 mi long, 50 yd wide · near Arvada
Tue, Jun 6, 1995 · F0 · 0.1 mi long, 10 yd wide · near Standley Lake

By decade: 1990s: 2

Still loading: NOAA's record goes back to 1950, and 1995 onward is in so far.

Every hail day since October 2020

Fri, Sep 25, 2026
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Wed, Aug 26, 2026
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Sat, Aug 22, 2026
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Thu, Aug 20, 2026
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Sat, Aug 15, 2026
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
No hail reported in the county.
Fri, Aug 14, 2026
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Thu, Aug 13, 2026
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Tue, Jul 28, 2026
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Fri, Jul 24, 2026
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
No hail reported in the county.
Fri, Jun 26, 2026
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Thu, Jun 25, 2026
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Wed, Jun 24, 2026
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
No hail reported in the county.
Mon, Jun 8, 2026
Radar estimate anywhere in the county: 0.75 in or larger (penny)
Reported in the county
- 1.75 in (Wah Keeney Park, CO)
- 1 in (2 ENE Bergen Park, CO)
- 1 in (1 WSW Golden, CO)
- 1 in (2 N Lakewood, CO)
- 1 in (1 NW Golden, CO)
- and 8 more
Wed, Jun 3, 2026
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Mon, Jun 1, 2026
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Thu, May 28, 2026
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Sat, Aug 23, 2025
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
Reported in the county
- 1.5 in (2 W Aspen Park, CO)
- 1 in (4 NNE Floyd Hill, CO)
Mon, Aug 18, 2025
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Wed, Jul 16, 2025
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Sun, Jul 13, 2025
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Sun, Jul 6, 2025
Radar estimate anywhere in the county: 1 in or larger (quarter)
Reported in the county
- 1 in (3 W Wheat Ridge, CO)
- 1.5 in (Edgewater, CO)
Mon, Jun 30, 2025
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Tue, Jun 17, 2025
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Sun, Jun 8, 2025
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Sat, May 31, 2025
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Tue, May 27, 2025
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Sat, May 24, 2025
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Sun, May 18, 2025
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Wed, Sep 4, 2024
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Sat, Aug 10, 2024
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Mon, Jul 15, 2024
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Sat, Jun 29, 2024
Radar estimate anywhere in the county: 0.75 in or larger (penny)
Reported in the county
- 1 in (2 NW Wheat Ridge, CO)
- 1 in (Arvada, CO)
Thu, Jun 20, 2024
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Fri, Jun 14, 2024
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Tue, Jun 11, 2024
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Sun, Jun 9, 2024
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Thu, May 30, 2024
Radar estimate anywhere in the county: 0.75 in or larger (penny)
Reported in the county
- 1.25 in (1 SE Broomfield, CO)
Mon, May 13, 2024
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Fri, Apr 26, 2024
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Mon, Aug 28, 2023
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Fri, Aug 18, 2023
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Tue, Aug 1, 2023
Radar estimate anywhere in the county: 2 in or larger (hen egg)
Reported in the county
- 1.25 in (1 SSE Pine Grove, CO)
- 1.25 in (1 SSE Pine Grove, CO)
- 1 in (2 WNW Buffalo Creek, CO)
Mon, Jul 31, 2023
Radar estimate anywhere in the county: 2 in or larger (hen egg)
No hail reported in the county.
Thu, Jul 20, 2023
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
No hail reported in the county.
Sat, Jul 8, 2023
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
Reported in the county
- 1.25 in (3 NW Columbine, CO)
Wed, Jul 5, 2023
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
No hail reported in the county.
Tue, Jul 4, 2023
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Fri, Jun 30, 2023
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Thu, Jun 29, 2023
Radar estimate anywhere in the county: 2 in or larger (hen egg)
Reported in the county
- 1.5 in (2 SE Morrison, CO)
- 1.25 in (2 SSW Edgewater, CO)
Thu, Jun 22, 2023
Radar estimate anywhere in the county: 2 in or larger (hen egg)
Reported in the county
- 1 in (3 E Conifer, CO)
- 2.5 in (2 NNW Indian Hills, CO)
- 1.75 in (3 NW Columbine, CO)
- 2 in (1 WNW Columbine, CO)
- 2 in (Morrison, CO)
Wed, Jun 21, 2023
Radar estimate anywhere in the county: 2 in or larger (hen egg)
Reported in the county
- 1 in (1 WSW Aspen Park, CO)
- 1.75 in (1 SSE Evergreen, CO)
- 2 in (Red Rocks Park, CO)
- 1.5 in (2 ENE Lakewood, CO)
- 1 in (1 SSW Crescent Village, CO)
Mon, Jun 12, 2023
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Sun, Jun 11, 2023
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Thu, Jun 8, 2023
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Wed, Jun 7, 2023
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Mon, Jun 5, 2023
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Wed, May 31, 2023
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Fri, May 26, 2023
Radar estimate anywhere in the county: 1 in or larger (quarter)
Reported in the county
- 1 in (1 NE PLEASANT VIEW, CO)
Sat, Aug 20, 2022
Radar estimate anywhere in the county: 0.75 in or larger (penny)
Reported in the county
- 1.25 in (3 ESE CONIFER, CO)
Mon, Aug 15, 2022
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Sat, Aug 6, 2022
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Wed, Jul 27, 2022
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Tue, Jul 26, 2022
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Fri, Jul 8, 2022
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Wed, Jul 6, 2022
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Sun, May 29, 2022
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Mon, Jan 3, 2022
Radar estimate anywhere in the county: 3 in or larger (teacup)
No hail reported in the county.
Fri, Sep 3, 2021
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Sun, Aug 29, 2021
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Thu, Aug 19, 2021
Radar estimate anywhere in the county: 1 in or larger (quarter)
Reported in the county
- 2 in (4 ESE WHITE RANCH OPEN, CO)
- 1.5 in (2 WSW WESTMINSTER, CO)
Fri, Jul 2, 2021
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Fri, Jun 25, 2021
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Sun, May 30, 2021
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.

Check your own address →Weather in Jefferson County, CO now →Get warned before the next storm →

Radar estimates and reports are for anywhere inside the county's boundary. Radar estimates come from NOAA's MRMS estimated hail size (MESH), the largest hail the radar estimates aloft on a ~1 km grid. They often run larger than the hail that reached the ground, and they aren't an observation at any address. Reports are what people reported to the National Weather Service. Neither is proof of damage or an official record for an insurance claim. From NOAA's Storm Events Database (NCEI), which records tornadoes from 1950, hail and thunderstorm wind from 1955, and every kind of storm from 1996. A tornado that crossed county lines is counted in each county it touched. Recent months are added as NCEI publishes them, a few months behind. Damage is in the dollars of its year and is often an estimate.