Weather StoryAlmanac, microseasons, and the day's weather story.

Weather in Castaic, California

Fog and sun in daily rhythm. Day 58 of spring. Read this microseason across nine climate regions →

Castaic, CA
Saturday, May 16 at 11:58 PM
71
°
Clear
Feels like
64°
Humidity
50%
Wind
17 mph
Sunrise
5:51 AM
Sunset
7:50 PM
Castaic, CA
Hour by hour · 24h
73°
4p
72°
5p
69°
6p
65°
7p
60°
8p
58°
9p
57°
10p
57°
11p
56°
12a
55°
1a
54°
2a
53°
3a
52°
4a
52°
5a
51°
6a
55°
7a
57°
8a
58°
9a
60°
10a
65°
11a
68°
12p
71°
1p
71°
2p
69°
3p
L 51°H 73°
Castaic, CA
7-day forecast
  1. Today
    May 16
    Foggy
    73°54°
  2. Sunday
    May 17
    Overcast
    72°51°
  3. Monday
    May 18
    Overcast
    80°51°
  4. Tuesday
    May 19
    Clear
    87°52°
  5. Wednesday
    May 20
    Overcast
    87°57°
  6. Thursday
    May 21
    Overcast
    85°54°
  7. Friday
    May 22
    Mostly Clear
    83°53°
Castaic, CA
Anemometer · 24h winds · from true
NESW
From · True
WSW
249° · backing 62°
Direction
WSW
249°
Sustained
17
mph
Gust
20
mph
Peak 24h
20
avg 10
Beaufort · 4 · MOD BRZ
0
CALM
<1
1
LIGHT AIR
1–3
2
LIGHT BRZ
4–7
3
GENTLE BRZ
8–12
4
MOD BRZ
13–18
5
FRESH BRZ
19–24
6
STRONG BRZ
25–31
7
NEAR GALE
32–38
24h · sust vs gust · mph
avg 10 · pk 20 @ 2:00p
−24h−18h−12h−6hnow
A fresh breeze drives the wsw-bound air across the harbor.
Castaic, CA
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
949.9
+1.8 mb in 3h · falling · 28.05 inHg
Now
949.9
mb
3h
+1.8
mb
12h
-1.7
mb
24h
-0.8
mb
Regime · STORM
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 947952
−24h−18h−12h−6hnow
Deep low — expect rough seas, strong wind, and persistent rain.
Castaic, CA
Air quality
46
AQI
Good
PM 2.5
7.6 μg/m³
PM 10
15.2 μg/m³
NO₂
0.5 μg/m³
Ozone
107.0 μg/m³
UV Index
4.0 Moderate
Castaic, CA
Almanac · Saturday, May 16
Flowers blooming in late autumn, a sure sign of a bad winter coming.
Civil dawn
12:24 PM
Sunrise
5:51 AM
Daylight
13h 59m
Sunset
7:50 PM
Civil dusk
3:19 AM
Planting note
Direct sow okra, melons, and southern peas. Thin carrot rows.
Castaic, CA
The moon
New Moon
0% illuminated
Moonrise
12:20 PM
Moonset
2:07 AM
In sign
♉︎ Taurus
Castaic, CA
Microseason · 28 of 72
May 16–20

Fog and sun in daily rhythm

weather
Jan 137% of the yearDec 31

Read this microseason across nine climate regions →

Castaic at a glance

  • Today vs. normal: 6°F below the seasonal normal for this latitude
  • Last frost: March 14 (climatological average for this latitude)
  • Microseason: 28 of 72, May 16–20
  • Planting window: Direct sow okra, melons, and southern peas. Thin carrot rows.

Right now in the garden

Peak growing season

As of May 16, the growing season is at its peak — frost is months away. Continue succession-planting beans and summer squash. Start fall brassicas (broccoli, cabbage, kale) from seed indoors for transplanting in late summer.

ZIP codes in Castaic

Climate normals from the Open-Meteo Climate API. Köppen approximation from NOAA NCEI U.S. Climate Regions. See methodology for data sources, editorial rules, and corrections. Maintainer: Brian Tighe.