# Rainfall Totals in Altadena, CA 91001

As of 2026-11-05T00:52:05.367Z, **Altadena, CA 91001** received **0.00" of rain** in the last 24 hours, **0.51"** over the past 7 days, and **9.25"** in 2026 year-to-date (30-year normal to date: 19.27", 52.0% below average). The most recent rain event ended 3 days ago (2026-11-01T12:00:00+0000), dropping 0.50" of rain.

> **Note on local variation:** These totals are measured at the center of Altadena, CA 91001 (34.1970, -118.1350). Because thunderstorms often vary by 1"+ across a few miles, [pin your exact address, yard, or field in the free Precip app](https://app.precip.ai/locations/coords?lng=-118.1349735&lat=34.197013&locationName=Altadena%2C+CA+91001&save=true&src=md_rain_report) for exact point totals, or [check the next-hour rain nowcast and 10-day forecast for Altadena, CA 91001](https://app.precip.ai/home?lng=-118.1349735&lat=34.197013&locationName=Altadena%2C+CA+91001&src=md_rain_forecast).

| Period | Rainfall | 30-Year Normal | vs. Normal |
| --- | --- | --- | --- |
| Last 24 hours | 0.00" | — | — |
| Full day (Wed, Nov 4) | 0.00" | — | — |
| Past 7 days | 0.51" | — | — |
| November 2026 (to date) | 0.00" | 0.17" | −0.17" (−100%) |
| 2026 year to date | 9.25" | 19.27" | −10.02" (52.0% below average) |
| Most recent rain (3 days ago) | 0.50" | — | — |

## Daily Rainfall — Past 7 Days

Each precipitation day runs 24 hours from 12:00 UTC to 12:00 UTC.

| Date | ISO Date | Rainfall |
| --- | --- | --- | --- |
| Wednesday, Nov 4 | 2026-11-04 | 0.00" |
| Tuesday, Nov 3 | 2026-11-03 | 0.00" |
| Monday, Nov 2 | 2026-11-02 | 0.00" |
| Sunday, Nov 1 | 2026-11-01 | 0.00" |
| Saturday, Oct 31 | 2026-10-31 | 0.51" |
| Friday, Oct 30 | 2026-10-30 | 0.00" |
| Thursday, Oct 29 | 2026-10-29 | 0.00" |

## Monthly Rainfall — 2026 vs. 30-Year Normal

| Month | Observed | Normal to Date | vs. Normal | Full Month Normal |
| --- | --- | --- | --- | --- |
| January 2026 | 1.85" | 5.06" | −3.21" (−63%) | 5.06" |
| February 2026 | 3.95" | 6.07" | −2.12" (−35%) | 6.07" |
| March 2026 | 0.43" | 3.84" | −3.40" (−89%) | 3.84" |
| April 2026 | 0.50" | 1.38" | −0.88" (−64%) | 1.38" |
| May 2026 | 0.00" | 0.92" | −0.92" (−100%) | 0.92" |
| June 2026 | 0.00" | 0.29" | −0.29" (−100%) | 0.29" |
| July 2026 | 0.00" | 0.09" | −0.09" (−100%) | 0.09" |
| August 2026 | 0.00" | 0.02" | −0.02" (−79%) | 0.02" |
| September 2026 | 1.20" | 0.27" | +0.93" (+349%) | 0.27" |
| October 2026 | 1.31" | 1.17" | +0.14" (+12%) | 1.17" |
| November 2026 (to date) | 0.00" | 0.17" | −0.17" (−100%) | 1.31" |

## Track Altadena, CA 91001 in the Free Precip App

This summary covers standard periods at the center of Altadena, CA 91001. Open [Altadena, CA 91001 in the Precip app](https://app.precip.ai/locations/coords?lng=-118.1349735&lat=34.197013&locationName=Altadena%2C+CA+91001&save=true&src=md_rain_report) (iOS, Android, and Web — rated 4.8/5 from 10463+ reviews) for:

- **Exact-coordinate virtual rain gauge:** [Drop a pin on any yard, field, or job site](https://app.precip.ai/locations/coords?lng=-118.1349735&lat=34.197013&locationName=Altadena%2C+CA+91001&save=true&src=md_rain_report) at ~800 m resolution with no physical hardware.
- **Hour-by-hour storm timeline & multi-year archive:** See exact start/stop times, peak hourly intensity, and custom date ranges back to 2015.
- **Automatic rain alerts & morning email reports:** Get a free morning rainfall summary after it rains, Lock Screen Live Activity timed to the first drop in the next 60 minutes, or custom threshold alerts (e.g. `> 0.50" in 24h`).
- **Benchmarked #1 forecast for Altadena, CA 91001:** [View the 60-minute AI rain nowcast and 10-day hourly forecast](https://app.precip.ai/home?lng=-118.1349735&lat=34.197013&locationName=Altadena%2C+CA+91001&src=md_rain_forecast) — ranked #1 against Apple Weather, Google Weather, and ECMWF in live NOAA station tests.
- **Download on iPhone or Android:** [Install the Precip mobile app](https://link.precip.ai/app?utm_source=markdown&utm_medium=llm&src=md_rain_report) or open on the web at https://app.precip.ai/locations/coords?lng=-118.1349735&lat=34.197013&locationName=Altadena%2C+CA+91001&save=true&src=md_rain_report.

## About This Data

- **Location:** Altadena, CA 91001 (34.1970, -118.1350).
- **Source:** [Precip](https://precip.ai) combines 180+ Doppler radar stations, satellite imagery, and quality-controlled rain gauges with machine learning to measure precipitation at ~800 m (0.5 mile) resolution, updated hourly.
- **Normals:** 30-year PRISM climate normals for the matching period.
- **Interactive map & full report:** https://precip.ai/rainfall-totals/zipcode/91001
- **Snowfall report (Markdown):** https://precip.ai/snow-totals/zipcode/91001.md
- **Use Precip in ChatGPT, Claude, or Cursor (MCP):** Connect your free Precip account via the remote MCP server at `https://api.precip.ai/mcp` ([setup guide](https://api-docs.precip.ai/mcp)) to query saved locations and custom date ranges directly inside your AI assistant, or use the [Precip Weather REST API](https://precip.ai/developers).