Question 1

How much rain did Fullerton, CA get in the last 24 hours?

Accepted Answer

Fullerton, CA received 0.11" of rain over the last 24 hours, measured by Precip's radar-based virtual rain gauge and updated hourly.

Question 2

What is the year-to-date rainfall total for Fullerton, CA in 2026?

Accepted Answer

So far in 2026, Fullerton, CA has received 6.59" of precipitation according to Precip, compared to the 30-year normal to date of 10.06" (34.5% below average).

Question 3

When did it last rain in Fullerton, CA?

Accepted Answer

The most recent rain event in Fullerton, CA ended 18 minutes ago, dropping 0.11" of rain as measured by Precip.

Question 4

How are rainfall totals for Fullerton, CA measured?

Accepted Answer

Precip combines Doppler radar, satellite imagery, and ground station data with AI to estimate rainfall for any point — a virtual rain gauge for Fullerton, CA accurate to roughly 800 meters and updated every hour.

Month	2026 Total	30-Yr Normal	vs. Normal
January	1.36"	2.86"	−1.50" (−53%)
February	2.80"	3.34"	−0.53" (−16%)
March	0.20"	2.07"	−1.87" (−90%)
April	0.36"	0.68"	−0.32" (−47%)
May	0.06"	0.29"	−0.23" (−78%)
June	0.00"	0.09"	−0.09" (−100%)
July	0.00"	0.05"	−0.05" (−100%)
August	0.00"	0.00"	0.00" (−100%)
September	0.89"	0.13"	+0.76" (+583%)
October	0.91"	0.56"	+0.35" (+63%)
2026 YTD Total	6.59"	10.06"	−3.47" (34.5% below average)

Rain Today in Fullerton, CA: How Much Rain Fell — Last 24 Hour Rainfall Totals

0.11" of rain in Fullerton, CA in the last 24 hours

Virtual Rain Gauge Map

Daily Rainfall Totals in Fullerton, CA (Last 7 Days)

Monthly Rainfall Totals in Fullerton, CA (2026)

Rainfall Totals vs Normals (30 Year Average)

Track rainfall in Fullerton, CA every day

Rain Forecast for Fullerton, CA

Lookup weather conditions for zip codes in Fullerton, CA

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