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Season Rainfall (Precipitation)
2023-2024

Pasadena, California

For prior seasons, click here.

Visitors to Castle Green Open House, Pasadena

Visitors to a Castle Green Open House in Pasadena on a rainy day. Los Angeles Almanac Photo.


Why our “Rainfall Season” is different than that of the National Weather Service


Also see:
-- Historic Pasadena Seasonal Rainfall

-- Current Season Rainfall-to-Date - Downtown Los Angeles
-- Current Season Rainfall-to-Date - Beverly Hills
-- Current Season Rainfall-to-Date - Burbank
-- Current Season Rainfall-to-Date - Claremont
-- Current Season Rainfall-to-Date - Hawthorne
-- Current Season Rainfall-to-Date - Lancaster
-- Current Season Rainfall-to-Date - Long Beach
-- Current Season Rainfall-to-Date - Los Angeles International Airport
-- Current Season Rainfall-to-Date - Palmdale
-- Current Season Rainfall-to-Date - Sandberg
-- Current Season Rainfall-to-Date - Santa Catalina Island
-- Current Season Rainfall-to-Date - Santa Clarita
-- Current Season Rainfall-to-Date - Santa Fe Dam (San Gabriel Valley)
-- Current Season Rainfall-to-Date - Santa Monica
-- Current Season Rainfall-to-Date - Torrance
-- Current Season Rainfall-to-Date - Van Nuys, Los Angeles
-- Current Season Rainfall-to-Date - Westwood, Los Angeles
-- Current Season Rainfall-to-Date - Whittier
-- Current Season Rainfall-to-Date - Woodland Hills, Los Angeles

Rainfall, Precipitation, Weather, Map, Los Angeles County
The Almanac now monitors rainfall for Beverly Hills and Torrance.


NOTE: When most weather reporting sources cite weather in Los Angeles (without specifying where, exactly, in Los Angeles), these numbers are typically for the Downtown Los Angeles weather station (actually located on the USC campus).


Rainfall and Raindrops
How Much Water is One Inch of Rain?


Pasadena
May 2024 Rainfall-to-Date

Reporting for this station is not at consistent intervals and almost never on a daily basis. Reports for this station commonly come out in a single monthly batch, about six or more days after the end of the month. In some months (again, inconsistently), updates for Pasadena come through in batches, perhaps two or three times during the month. We update this page as soon as these updates come through. As an alternative, the nearest weather station with the closest similar micro-climate would be at Santa Fe Dam, about ten miles southeast of Downtown Pasadena, in the San Gabriel Valley. We post this station's daily and hourly reports.


Rainfall measured in inches

Date (May) Rainfall Measured for Day Month's Cumulative Rainfall Measured
3 0.01 0.01
5 0.20 0.21
-- Data received through May 6 --



Pasadena
2023-2024 Rainfall Season-to-Date

Monthly rainfall totals for previous seasons are found at Monthly Rainfall for Pasadena.


Rainfall measured in inches

NOTE: Rainfall normals were updated on May 4, 2021.

Month Rainfall For Month Rainfall For Season
Measured for Month Monthly Normal Deviation from Monthly Normal Measured for Season-to-Date Season Normal-to-Date Deviation from Season Normal-to-Date
Jul 2023 0.00* 0.06 -0.06 0.00 0.06 -0.06
Aug 2023 4.61 0.03 +4.58 4.61 0.09 +4.52
Sep 2023 0.30 0.22 +0.08 4.91 0.31 +4.60
Oct 2023 0.14 0.84 -0.70 5.05 1.15 +3.90
Nov 2023 0.77 1.10 -0.33 5.82 2.25 +3.57
Dec 2023 1.94 3.33 -1.39 7.76 5.58 +2.18
Month Rainfall For Month Rainfall For Season
Measured for Month Monthly Normal Deviation from Monthly Normal Measured for Season-to-Date Season Normal-to-Date Deviation from Season Normal-to-Date
Jan 2024 1.81 4.51 -2.70 9.57 10.09 -0.52
Feb 2024 14.44 5.16 +9.28 24.01 15.25 +8.76
Mar 2024 5.27 3.03 +2.24 29.28 18.28 +11.00
Apr 2024 0.79 1.11 -0.32 30.07 19.39 +10.68
May 2024 -Pending- 0.48 --- -Pending- 19.87 ---
Jun 2024 -Pending- 0.21 --- -Pending- 20.08 ---

† Normals, reissued every ten years, were updated on May 4, 2021. The latest normals are National Centers For Environmental Information data, used by the National Weather Service, based upon 30-year averages, covering 1991 through 2020. The total season normal for this station is 20.08 inches.

* Data for the month are not yet fully reported. Data for this station typically is delayed for up to several weeks. An update will be made upon the release of all data for the month.

Source: National Weather Service Forecast Office, Los Angeles/Oxnard