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?
National Weather Service (NWS) reporting for this station does not come at consistent intervals and certainly not on a daily basis. These may be reported in one or two monthly batches, sometimes as late as the end of the month. There is no consistency. We update this page as soon as these come through. As alternative daily reporting, we now provide privately-reported data from Raindrop.Farm, which will be revised upon release of NWS data. Another alternative is the station at Santa Fe Dam in Irwindale, in the San Gabriel Valley. It is the nearest weather station to Pasadena (less than 12 miles from Downtown Pasadena). This station reports hourly.
Rainfall measured in inches
| Date (October) | Rainfall Measured for Day | Month's Cumulative Rainfall Measured |
|---|---|---|
| 21 | 0.15* | 0.15 |
| 22 | 0.36* | 0.51 |
* Cumulative rainfall for this day, as reported by Raindrop.Farm. This number may later be revised in National Weather Service reports. Earlier data here were revised according to National Weather Service reports.
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 2026 | 0.00 | 0.06 | -0.06 | 0.00 | 0.06 | -0.06 |
| Aug 2026 | 0.00 | 0.03 | -0.03 | 0.00 | 0.09 | -0.09 |
| Sep 2026 | 1.10 | 0.22 | +0.88 | 1.10 | 0.31 | +0.79 |
| Oct 2026 | --- | 0.84 | --- | --- | 1.15 | --- |
| Nov 2026 | --- | 1.10 | --- | --- | 2.25 | --- |
| Dec 2026 | --- | 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 2027 | --- | 4.51 | --- | --- | 10.09 | --- |
| Feb 2027 | --- | 5.16 | --- | --- | 15.25 | --- |
| Mar 2027 | --- | 3.03 | --- | --- | 18.28 | --- |
| Apr 2027 | --- | 1.11 | --- | --- | 19.39 | --- |
| May 2027 | --- | 0.48 | --- | --- | 19.87 | --- |
| Jun 2027 | --- | 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
