For prior seasons, click here.
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
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.
How Much Water is One Inch of Rain?
Reporting for this station is not reported at consistent intervals. Reports are never posted on a daily basis, but, may be reported in a single monthly batch, as late as six to ten days after the end of the month. In other months, update reports for Pasadena come through in batches once or twice during the month. We update here as soon as these updates come through. As an alternative, Santa Fe Dam in Irwindale, in the San Gabriel Valley, is the nearest weather station to Pasadena (just under 12 miles from Downtown Pasadena). This station reports hourly.
Rainfall measured in inches
| Date (October) | Rainfall Measured for Day | Month's Cumulative Rainfall Measured |
|---|---|---|
| No rainfall data yet reported for this month by the National Weather Service. Reporting for this station is typically delayed. Last update was through Sep. 24. | ||
Monthly rainfall totals for previous seasons are found at Monthly Rainfall for Los Angeles International Airport.
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 2025 | 0.00 | 0.06 | -0.06 | 0.00 | 0.06 | -0.06 |
| Aug 2025 | 0.00 | 0.03 | -0.03 | 0.00 | 0.09 | -0.09 |
| Sep 2025 | 0.00* | 0.22 | -0.22 | 0.00 | 0.31 | -0.31 |
| Oct 2025 | --- | 0.84 | --- | --- | 1.15 | --- |
| Nov 2025 | --- | 1.10 | --- | --- | 2.25 | --- |
| Dec 2025 | --- | 3.33 | --- | --- | 5.58 | --- |
| 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 2026 | --- | 4.51 | --- | --- | 10.09 | --- |
| Feb 2026 | --- | 5.16 | --- | --- | 15.25 | --- |
| Mar 2026 | --- | 3.03 | --- | --- | 18.28 | --- |
| Apr 2026 | --- | 1.11 | --- | --- | 19.39 | --- |
| May 2026 | --- | 0.48 | --- | --- | 19.87 | --- |
| Jun 2026 | --- | 0.21 | --- | --- | 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
