Clayton, CA Live Doppler Radar

Live radar for Clayton, Contra Costa County: every NWS radar combined, rain, snow and ice colors, flash-flood risk, storm tracks and official warnings.

Open live radar for Clayton What TALON shows

What weather hits Clayton?

Since 1996, the National Weather Service has logged river or areal flooding on 40 days in the East Bay Interior Valleys forecast zone and Contra Costa County — the most common reported hazard around Clayton, mostly in January and February. Next come excessive heat (19 days) and high winds (11 days).

Hazard	Days reported	Most recent	Worst on record
Flooding	40	Jan 2026	Jan 1, 2006 · $22 million damage
Excessive heat	19	Mar 2026	Jun 27, 2009 · 1 death
High winds	11	Jan 2019	Jan 7, 2017 · 1 death
Debris flows	11	Feb 2019	Apr 6, 2006 · $11 million damage
Wildfires	8	May 2022	Aug 7, 2019 · $5,000 damage
Flash flooding	7	Feb 2000	Feb 13, 2000 · $100,000 damage
Damaging thunderstorm winds	2	Apr 2024	Apr 5, 2024 · $10 damage

Source: NOAA NCEI Storm Events Database, 1996–2026 (the latest year is partial). A "day" is a date with at least one report in the East Bay Interior Valleys forecast zone and Contra Costa County; damage is as reported, not adjusted for inflation.

Which radars cover Clayton?

The closest NEXRAD Doppler radar is KDAX (Sacramento, CA), about 41 miles north-northeast. Radar beams climb as they travel, so the height of the lowest scan over town decides how low in a storm the radar can see.

Radar	Distance	Lowest beam over Clayton	View
KDAX Sacramento, CA	41 mi north-northeast	2,700 ft	Excellent — the lowest scan sees close to the ground
KMUX San Francisco, CA	54 mi south	4,000 ft	Good — most storms and steady rain or snow show clearly
KBBX Beale AFB, CA	109 mi north	10,900 ft	Limited — the beam overshoots the lowest part of storms

Beam height is the center of the 0.5° scan above the radar, with standard refraction. Mountains near a radar can block it further.

Tornado & hail history near Clayton

Since 1950, NOAA has recorded 11 tornadoes within 25 miles of Clayton. Most came in December and September. The strongest was an EF1 on January 23, 2010, which touched down about 9 miles east-southeast of town. The most recent was an EF0 on April 7, 2011, which touched down about 23 miles north-northwest of town.

Hail: 1 report of 1-inch or larger hail within 25 miles since 1955; the largest was 1.00-inch hail on March 31, 2013.

Source: NOAA Storm Prediction Center — tornadoes 1950–2025, hail 1955–2025. Distances are to each tornado's track; ratings before February 2007 use the original Fujita scale.

On TALON you get Clayton's live radar loop, rain/snow/ice colors, flash-flood risk, storm tracks with arrival times and NWS warnings free; close-up radar and rotation detection are part of TALON Pro.

Clayton radar FAQ

Where is the nearest weather radar to Clayton, CA?

KDAX (Sacramento, CA), about 41 miles north-northeast. KMUX (San Francisco, CA) is 54 miles away and also covers the area.

How often does Clayton flood?

Since 1996 the National Weather Service has logged river or areal flooding on 40 days in the East Bay Interior Valleys forecast zone and Contra Costa County. TALON's free flash-flood risk layer shows, every 2 minutes, how close the rain that has fallen is to what it takes to flood — turn it on under Layers.

Is TALON's radar for Clayton free?

Yes — the US radar loop, rain/snow/ice colors, flash-flood risk, storm tracks and NWS warnings are free in any browser. Close-up radar, rotation detection and longer forecasts are part of TALON Pro.

Should I rely on radar for my safety?

No app replaces official warnings. When the National Weather Service issues a warning for Clayton, follow it right away — see watch vs. warning.

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