Altadena, CA Weather Forecast & Alerts

Current conditions, 5-day forecast, and active NWS weather alerts for Altadena, CA.

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Current Conditions — Altadena, CA

BURBANK (KBUR)

Cloudy

57.2 F
Humidity:63%
Wind Speed:SE 5.7 mph
Barometer:29.99 in
Dewpoint:44.6 F
Visibility:10.00 mi
Precip:--
Heat Index:NA
Wind Chill:NA
Apr 27 2026, 01:05 AM PDT
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5-Day Forecast — Altadena, CA

Monday

High 66 °F
Forecast Missing
Monday
Night
Low 48 °F
Forecast Missing
Tuesday

High 75 °F
Forecast Missing
Tuesday
Night
Low 53 °F
Forecast Missing
Wednesday

High 75 °F
Forecast Missing
Wednesday
Night
Low 55 °F
Forecast Missing
Thursday

High 75 °F
Forecast Missing
Thursday
Night
Low 57 °F
Forecast Missing
Friday

High 80 °F
Forecast Missing

Detailed Forecast — Altadena, CA

Monday
Forecast Missing. High near 66°F. Wind 2 to 8 mph, with gusts as high as 12 mph.
Monday Night
Forecast Missing. Low around 48°F. Wind 1 to 8 mph, with gusts as high as 12 mph.
Tuesday
Forecast Missing. High near 75°F. Wind 2 to 7 mph, with gusts as high as 9 mph.
Tuesday Night
Forecast Missing. Low around 53°F. Wind 1 to 2 mph, with gusts as high as 3 mph.
Wednesday
Forecast Missing. High near 75°F. Wind 0 to 6 mph, with gusts as high as 9 mph.
Wednesday Night
Forecast Missing. Low around 55°F. Wind 1 to 2 mph, with gusts as high as 5 mph.
Thursday
Forecast Missing. High near 75°F. Wind around 6 mph, with gusts as high as 14 mph.
Thursday Night
Forecast Missing. Low around 57°F. Wind 1 to 2 mph, with gusts as high as 7 mph.
Friday
Forecast Missing. High near 80°F. Wind 5 to 6 mph, with gusts as high as 12 mph.
Friday Night
Forecast Missing. Low around 57°F. Wind 1 to 2 mph, with gusts as high as 6 mph.
Saturday
Forecast Missing. High near 80°F. Wind 6 to 7 mph, with gusts as high as 13 mph.
Saturday Night
Forecast Missing. Low around 57°F. Wind 2 to 3 mph, with gusts as high as 7 mph.
Sunday
Forecast Missing. High near 75°F. Wind around 7 mph, with gusts as high as 16 mph.
CA Radar
Current Radar • CA
Day 1 Outlook • April 27, 2026

Observation History — Altadena, CA

Time Wind
(mph)		 Vis
(mi)		 Weather Precip (in) Temperature (F) Relative
Humidity		 Wind
Chill
(F)		 Heat
Index
(F)		 Pressure
Air Dwpt altimeter
(in)		 sea level
(mb)
01:05 AM PDT SE 5.7 10.00 Cloudy -- 57.2 44.6 63% NA NA 29.99 1015.6
01:00 AM PDT 4.6 10.00 Cloudy -- 57.2 44.6 63% NA NA 29.99 1015.6
12:50 AM PDT 4.6 10.00 Mostly Cloudy -- 57.2 44.6 63% NA NA 30.00 1015.9
12:45 AM PDT 4.6 10.00 Mostly Cloudy -- 57.2 44.6 63% NA NA 30.00 1015.9
12:35 AM PDT 4.6 10.00 Mostly Cloudy -- 57.2 44.6 63% NA NA 30.00 1015.9
12:25 AM PDT 4.6 10.00 Partly Cloudy -- 57.2 44.6 63% NA NA 30.00 1015.9
12:20 AM PDT 5.7 10.00 Mostly Cloudy -- 57.2 44.6 63% NA NA 30.00 1015.9
12:05 AM PDT S 3.4 10.00 Cloudy -- 57.2 44.6 63% NA NA 30.00 1015.9
12:00 AM PDT SE 3.4 10.00 Cloudy -- 57.2 44.6 63% NA NA 30.00 1015.9
11:50 PM PDT S 3.4 10.00 Cloudy -- 57.2 44.6 63% NA NA 30.00 1015.9
11:40 PM PDT 3.4 10.00 Mostly Cloudy -- 57.2 42.8 59% NA NA 30.00 1015.9
11:35 PM PDT 0.0 10.00 Mostly Cloudy -- 57.2 44.6 63% NA NA 30.00 1015.9
11:30 PM PDT 0.0 10.00 Mostly Cloudy -- 57.2 44.6 63% NA NA 30.00 1015.9
11:25 PM PDT 0.0 10.00 Mostly Cloudy -- 57.2 44.6 63% NA NA 30.00 1015.9
11:15 PM PDT 0.0 10.00 Cloudy -- 57.2 44.6 63% NA NA 30.00 1015.9
11:10 PM PDT 0.0 10.00 Cloudy -- 57.2 44.6 63% NA NA 30.00 1015.9
11:00 PM PDT 10.00 Cloudy -- 57.2 44.6 63% NA NA 30.00 1015.9
10:50 PM PDT S 4.6 10.00 Cloudy -- 57.2 44.6 63% NA NA 30.00 1015.9
10:45 PM PDT S 3.4 10.00 Cloudy -- 57.2 44.6 63% NA NA 30.00 1015.9
10:35 PM PDT S 3.4 10.00 Cloudy -- 57.2 44.6 63% NA NA 29.99 1015.6
10:30 PM PDT 4.6 10.00 Cloudy -- 57.2 44.6 63% NA NA 29.99 1015.6
10:20 PM PDT S 4.6 10.00 Cloudy -- 57.2 44.6 63% NA NA 29.99 1015.6
10:10 PM PDT 0.0 10.00 Cloudy -- 57.2 44.6 63% NA NA 29.99 1015.6
10:00 PM PDT S 3.4 10.00 Cloudy -- 57.2 44.6 63% NA NA 29.99 1015.6

Regional Weather Observation

BURBANK (KBUR)

Cloudy
57.2 F

LA / WHITEMAN (KWHP)

Cloudy
62.6 F

VAN NUYS (KVNY)

Cloudy
55.4 F

EL MONTE (KEMT)

Partly Cloudy
60.8 F

(KCQT)


F

PALMDALE (KPMD)

Cloudy and Windy
50.0 F
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