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Castaic, CA Weather Forecast | 10 Days

Updated: Mon Nov 9th 2026 11:30 AM PST

Mon, 11-9

83°F
55°F

Tue, 11-10

82°F
53°F

Wed, 11-11

83°F
57°F

Thu, 11-12

79°F
54°F

Fri, 11-13

75°F
53°F

Sat, 11-14

67°F
51°F

Sun, 11-15

66°F
53°F

Mon, 11-16

54°F
45°F

Tue, 11-17

57°F
39°F

Wed, 11-18

54°F
37°F

Sunny

Castaic CA Weather Forecast for Mon 11-9

Sunny with a high of 83°F and a low of 55°F. There's a very small chance of rainfall, only about 1%. Wind will be moderate, blowing around 11mph on average and gusts of 19.7mph at 9 PM. The air will be relatively dry with average humidity levels below 30%, the maximum being 40% at 10 PM and 17% being its lowest at 1 PM. Barometric pressure is its highest of 30.08 at 9 PM, a lowest point of 29.98 at 2 PM with an avg 30.03.

HI: 83°F
LO: 55°F

Rain: 1%
Snow: 0%

Wind
11 mph
Humidity
29% avg.

UV Index
4.4
Air Quality
Good

Sunrise
06:22 AM
Sunset
04:54 PM

Moonrise
07:02 AM
Moonset
05:01 PM
Moon Phase
New Moon

Hourly

Sunny

Castaic CA Weather Forecast for Tue 11-10

Sunny with a high of 82°F and a low of 53°F. There's a very small chance of rainfall, only about 1%. Wind will be moderate, blowing around 12mph on average and gusts of 20.8mph at 8 PM. The air will be relatively dry with average humidity levels below 30%, the maximum being 44% at 6 AM and 15% being its lowest at 1 PM. Barometric pressure is its highest of 30.14 at 8 AM, a lowest point of 30.04 at 2 PM with an avg 30.09.

HI: 82°F
LO: 53°F

Rain: 1%
Snow: 0%

Wind
11.6 mph
Humidity
28% avg.

UV Index
4.2
Air Quality
Good

Sunrise
06:23 AM
Sunset
04:53 PM

Moonrise
08:08 AM
Moonset
05:48 PM
Moon Phase
New Moon

Hourly

Sunny

Castaic CA Weather Forecast for Wed 11-11

Sunny with a high of 83°F and a low of 57°F. Wind will be moderate, blowing around 12mph on average and gusts of 22.6mph at 6 AM. The air will be relatively dry with average humidity levels below 30%, the maximum being 31% at 4 AM and 13% being its lowest at 1 PM. Barometric pressure is its highest of 30.12 at 12 AM, a lowest point of 30 at 4 PM with an avg 30.07.

HI: 83°F
LO: 57°F

Rain: 0%
Snow: 0%

Wind
11.6 mph
Humidity
23% avg.

UV Index
4.3
Air Quality
Good

Sunrise
06:24 AM
Sunset
04:52 PM

Moonrise
09:09 AM
Moonset
06:40 PM
Moon Phase
Waxing Crescent

Hourly

Sunny

Castaic CA Weather Forecast for Thu 11-12

Sunny with a high of 79°F and a low of 54°F. There's a very small chance of rainfall, only about 1%. Wind will be moderate, blowing around 11mph on average and gusts of 21.3mph at 6 AM. The air will be relatively dry with average humidity levels below 30%, the maximum being 56% at 10 PM and 15% being its lowest at 12 PM. Barometric pressure is its highest of 30.03 at 12 AM, a lowest point of 29.85 at 4 PM with an avg 29.94.

HI: 79°F
LO: 54°F

Rain: 1%
Snow: 0%

Wind
10.5 mph
Humidity
29% avg.

UV Index
4.4
Air Quality
Moderate

Sunrise
06:25 AM
Sunset
04:52 PM

Moonrise
10:03 AM
Moonset
07:37 PM
Moon Phase
Waxing Crescent

Hourly

Partly Cloudy

Castaic CA Weather Forecast for Fri 11-13

Partly Cloudy with a high of 75°F and a low of 53°F. There's a very small chance of rainfall, only about 5%. Winds will be light at 9mph and gusts of 16.6mph at 2 AM. Humidity levels should be comfortable, sitting around 43% on average, the maximum being 73% at 11 PM and 22% being its lowest at 12 PM. Barometric pressure is its highest of 29.89 at 12 AM, a lowest point of 29.75 at 4 PM with an avg 29.82.

HI: 75°F
LO: 53°F

Rain: 5%
Snow: 0%

Wind
8.5 mph
Humidity
43% avg.

UV Index
6
Air Quality
Moderate

Sunrise
06:26 AM
Sunset
04:51 PM

Moonrise
10:49 AM
Moonset
08:36 PM
Moon Phase
Waxing Crescent

Hourly

Isolated Showers

Castaic CA Weather Forecast for Sat 11-14

Isolated Showers with a high of 67°F and a low of 51°F. Rainfall expected to have a 57% chance with an estimated 0.04in. Winds will be light at 8mph and gusts of 16.3mph at 1 PM. The humidity will be on the higher side, averaging about 63%, the maximum being 75% at 1 AM and 42% being its lowest at 1 PM. Barometric pressure is its highest of 29.92 at 10 PM, a lowest point of 29.82 at 1 PM with an avg 29.85.

HI: 67°F
LO: 51°F

Rain: 57% | est. 0.04in
Snow: 0%

Wind
7.4 mph
Humidity
63% avg.

UV Index
5
Air Quality
TBA

Sunrise
06:26 AM
Sunset
04:50 PM

Moonrise
11:28 AM
Moonset
09:36 PM
Moon Phase
First Quarter

Hourly

Isolated Showers

Castaic CA Weather Forecast for Sun 11-15

Isolated Showers with a high of 66°F and a low of 53°F. Rainfall expected to have a 58% chance with an estimated 0.05in. Winds will be light at 10mph and gusts of 17.6mph at 4 PM. The humidity will be on the higher side, averaging about 71%, the maximum being 89% at 10 PM and 55% being its lowest at 4 PM. Barometric pressure is its highest of 29.99 at 10 PM, a lowest point of 29.91 at 1 AM with an avg 29.95.

HI: 66°F
LO: 53°F

Rain: 58% | est. 0.05in
Snow: 0%

Wind
9.2 mph
Humidity
71% avg.

UV Index
4
Air Quality
TBA

Sunrise
06:27 AM
Sunset
04:50 PM

Moonrise
12:01 PM
Moonset
10:35 PM
Moon Phase
First Quarter

Hourly

Light Rain

Castaic CA Weather Forecast for Mon 11-16

Light Rain with a high of 54°F and a low of 45°F. It will likey rain, having a 79% chance of a downpour with an estimated 0.45in. Wind will be moderate, blowing around 11mph on average and gusts of 20.3mph at 10 PM. The humidity will be on the higher side, averaging about 71%, the maximum being 90% at 4 AM and 52% being its lowest at 4 PM. Barometric pressure is its highest of 29.98 at 12 AM, a lowest point of 29.88 at 4 PM with an avg 29.94.

HI: 54°F
LO: 45°F

Rain: 79% | est. 0.45in
Snow: 0%

Wind
10.1 mph
Humidity
71% avg.

UV Index
3
Air Quality
TBA

Sunrise
06:28 AM
Sunset
04:49 PM

Moonrise
12:30 PM
Moonset
11:32 PM
Moon Phase
First Quarter

Hourly

Sunny

Castaic CA Weather Forecast for Tue 11-17

Sunny with a high of 57°F and a low of 39°F. There's a very small chance of rainfall, only about 3%. Winds will be light at 9mph and gusts of 18.6mph at 12 AM. Humidity levels should be comfortable, sitting around 52% on average, the maximum being 66% at 4 AM and 37% being its lowest at 4 PM. Barometric pressure is its highest of 30 at 11 PM, a lowest point of 29.87 at 4 PM with an avg 29.92.

HI: 57°F
LO: 39°F

Rain: 3%
Snow: 0%

Wind
8.5 mph
Humidity
52% avg.

UV Index
4
Air Quality
TBA

Sunrise
06:29 AM
Sunset
04:48 PM

Moonrise
12:55 PM
Moonset
Does not set today
Moon Phase
First Quarter

Hourly

Sunny

Castaic CA Weather Forecast for Wed 11-18

Sunny with a high of 54°F and a low of 37°F. Rainfall expected to have a 67% chance with an estimated 0.4in. Winds will be light at 8mph and gusts of 16.3mph at 4 PM. Humidity levels should be comfortable, sitting around 60% on average, the maximum being 73% at 11 PM and 41% being its lowest at 10 AM. Barometric pressure is its highest of 30.09 at 10 AM, a lowest point of 30 at 1 AM with an avg 30.05.

HI: 54°F
LO: 37°F

Rain: 67% | est. 0.4in
Snow: 0%

Wind
7.4 mph
Humidity
60% avg.

UV Index
4
Air Quality
TBA

Sunrise
06:30 AM
Sunset
04:48 PM

Moonrise
01:20 PM
Moonset
12:28 AM
Moon Phase
Waxing Gibbous

Hourly

This 10-Day weather forecast is relevant for ZIP codes 91310 and 91384, accurately covering areas of Castaic, CA.

Currently

	79°F	30.04 inHg. Barometer 20% Humidity NE 5 mph Wind
Sunny

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Mon Nov 9th 2026, 8:28am PST

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Extended Forecast
Sun Nov 8th 2026, 6:22am PST

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