Rainfall Occurrence (Percent)
Downtown Los Angeles Weather Station
1970-1998*

Note & Disclaimer: Below are the percentage of days by day of the month in which rainfall occurred at the Los Angeles Civic Center. The period of time covered is from July 1970 to June 1998.* A percentage of 0% means that no rainfall occurred on that day of the month during the period. The percentage was derived from the number of days in which rainfall occurred for each day of the year divided into 27 (number of years in range*). For example, February 8 has seen more occurrences of rainfall between 1970 and 1998 than any other day of the year (41% or 11 of 27 days). There were no other variables taken into account. These percentages do not offer any guarantee of rainfall probability for future dates.


DAY JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC
1 11% 15% 37% 22% 4% 0% 0% 0% 0% 7% 11% 7%
2 30% 22% 37% 7% 7% 0% 0% 0% 0% 0% 0% 11%
3 33% 19% 22% 11% 15% 7% 0% 0% 7% 7% 4% 19%
4 33% 19% 26% 15% 11% 4% 0% 0% 4% 7% 4% 26%
5 37% 22% 33% 11% 11% 0% 0% 4% 15% 7% 7% 11%
6 22% 30% 37% 15% 15% 4% 0% 4% 7% 7% 4% 22%
7 30% 33% 22% 4% 4% 4% 4% 0% 0% 7% 4% 22%
8 19% 41% 15% 11% 4% 0% 7% 0% 4% 7% 11% 11%
9 33% 26% 11% 7% 7% 11% 0% 0% 0% 4% 4% 19%
10 19% 26% 26% 4% 4% 4% 0% 0% 7% 7% 22% 15%
11 15% 7% 26% 7% 7% 0% 0% 0% 7% 7% 26% 19%
12 26% 11% 19% 7% 0% 0% 4% 4% 0% 0% 19% 19%
13 22% 26% 30% 4% 7% 4% 0% 0% 4% 0% 19% 15%
14 26% 19% 15% 11% 0% 4% 0% 0% 0% 4% 7% 4%
15 26% 15% 7% 15% 4% 0% 0% 11% 7% 4% 7% 4%
16 37% 33% 22% 15% 4% 0% 4% 4% 4% 7% 7% 15%
DAY JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC
17 19% 26% 11% 11% 0% 0% 4% 4% 7% 4% 19% 19%
18 15% 15% 22% 22% 4% 0% 0% 7% 4% 4% 19% 22%
19 19% 30% 15% 15% 7% 4% 0% 7% 4% 4% 7% 15%
20 19% 22% 26% 11% 4% 0% 0% 0% 4% 7% 11% 11%
21 22% 15% 30% 7% 0% 4% 4% 0% 0% 15% 15% 15%
22 11% 11% 19% 4% 4% 0% 4% 0% 0% 7% 15% 15%
23 15% 19% 11% 11% 0% 4% 4% 0% 4% 15% 0% 11%
24 11% 15% 15% 7% 4% 0% 0% 0% 7% 19% 11% 15%
25 11% 11% 26% 15% 4% 0% 0% 0% 15% 4% 11% 11%
26 4% 15% 30% 4% 4% 4% 0% 4% 7% 7% 22% 7%
27 11% 26% 26% 7% 4% 0% 0% 4% 0% 7% 4% 22%
28 30% 30% 26% 7% 4% 0% 0% 0% 4% 11% 11% 26%
29 19% 4% 7% 4% 0% 0% 0% 0% 7% 15% 19% 22%
30 30% --- 7% 15% 0% 0% 0% 0% 7% 15% 15% 19%
31 19% --- 11% --- 0% --- 0% 0% --- 4% --- 4%

* Data was unavailable for July 1988 through June 1989. These days were not figured into the above calculations.

Source: National Weather Service (supporting rainfall data) & Los Angeles Almanac research (percentage calculations)