Altadena, CA Weather Forecast
Local 7-day forecast
Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Altadena, CA in one place.
Sunny, with a high near 100.
Local Weather Overview
This forecast page for Altadena, CA is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Jul 12, 2026 12:04 AM PDT.
The active forecast window currently covers Jul 14 to Jul 18, 2026 for Altadena, CA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jul 14 to Jul 18, 2026
- Latest sync
- Jul 12, 2026 12:04 AM PDT
- Forecast office
- LOX
- Source
- NOAA / NWS
Daily Outlook
This Week in Altadena
Tuesday looks like the warmest upcoming period in Altadena at 100 degrees F.
Friday Night is the coolest period ahead with temperatures near 65 degrees F.
The strongest winds are forecast for Tuesday at about 0 to 5 mph SW.
Precipitation is mentioned in 2 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 12, 2026 12:04 AM PDT
- Coverage
- 5 days
- Time zone
- America/Los_Angeles
- Forecast office
- LOX
- Radar station
- KSOX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Mostly clear, with a low around 69.
Sunny, with a high near 98.
Mostly clear, with a low around 70.
Sunny, with a high near 94.
Partly cloudy, with a low around 66.
Mostly sunny, with a high near 89.
A slight chance of rain showers after 11pm. Partly cloudy, with a low around 65.
A slight chance of rain showers before 11am. Mostly sunny, with a high near 89.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Tuesday
Jul 14
|
Sunny
|
100°F |
0 to 5 mph
SW
|
|
Tuesday Night
Jul 14
|
Mostly Clear
|
69°F |
0 to 5 mph
SSE
|
|
Wednesday
Jul 15
|
Sunny
|
98°F |
0 to 5 mph
WSW
|
|
Wednesday Night
Jul 15
|
Mostly Clear
|
70°F |
0 to 5 mph
SSE
|
|
Thursday
Jul 16
|
Sunny
|
94°F |
0 to 5 mph
SSE
|
|
Thursday Night
Jul 16
|
Partly Cloudy
|
66°F |
0 to 5 mph
SSE
|
|
Friday
Jul 17
|
Mostly Sunny
|
89°F |
0 to 5 mph
S
|
|
Friday Night
Jul 17
|
Slight Chance Rain Showers
|
65°F |
0 to 5 mph
SSE
|
|
Saturday
Jul 18
|
Slight Chance Rain Showers then Mostly Sunny
|
89°F |
0 to 5 mph
S
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Altadena.
