Current Conditions

Castaic, California

67°F19°C
Clear

Wind

N 4 mph6 km/h

Humidity

54%

Cloud Cover

0%

As of Tuesday, September 22, 2026 at 11:08 PM PDT

Today's Outlook

Night

Mostly clear, with a low around 62°F17°C. Light wind from the NNW around 3 mph5 km/h.

7-Day Forecast

DayConditionHigh (°F)Low (°F)Precip (mm)Cloud Cover (%)Wind (mph)
ClearHigh 88°F31°CLow 62°F17°CPrecip 0 in0 mmCloud 1%Wind NNE 4 mph6 km/hWednesday: Mostly clear and hot, with a high of 88°F31°C and morning low of 66°F19°C. Light wind from the E around 4 mph7 km/h. Dry air. Wednesday Night: Mostly clear, with a low around 62°F17°C. Light wind from the NNW around 3 mph5 km/h.
ClearHigh 86°F30°CLow 64°F18°CPrecip 0 in0 mmCloud 5%Wind SSW 3 mph6 km/hThursday: Mostly clear and warm, with a high of 86°F30°C and morning low of 67°F20°C. Breezy from the SSW at 5 to 7 mph8 to 11 km/h. Thursday Night: Mostly clear, with a low around 64°F18°C. Light wind from the NNW around 2 mph3 km/h.
ClearHigh 87°F30°CLow 66°F19°CPrecip 0 in0 mmCloud 25%Wind SW 3 mph5 km/hFriday: Partly cloudy and hot, with a high of 87°F30°C and morning low of 69°F21°C. Breezy from the SSW at 5 to 8 mph8 to 12 km/h. Friday Night: Mostly clear, with a low around 66°F19°C. Light wind from the WNW around 2 mph3 km/h.
Partly CloudyHigh 86°F30°CLow 64°F18°CPrecip 0 in0 mmCloud 59%Wind SSW 4 mph6 km/hSaturday: Mostly cloudy and warm, with a high of 86°F30°C and morning low of 66°F19°C. Breezy from the SSW at 6 to 9 mph9 to 14 km/h. Dry air. Saturday Night: Mostly cloudy, with a low around 64°F18°C. Light wind from the WSW around 2 mph3 km/h.
DrizzleHigh 76°F24°CLow 64°F18°CPrecip 0.07 in1.7 mm17%Cloud 53%Wind SSW 4 mph6 km/hSunday: Mostly cloudy and warm, with a high of 76°F24°C and morning low of 67°F19°C. Breezy from the S at 6 to 8 mph9 to 13 km/h. 17% chance of drizzle throughout the day. Sunday Night: Mostly cloudy, with a low around 64°F18°C. Light wind from the SSW around 2 mph3 km/h.
DrizzleHigh 79°F26°CLow 59°F15°CPrecip 0.06 in1.5 mm13%Cloud 23%Wind WNW 3 mph5 km/hMonday: Mostly clear and warm, with a high of 79°F26°C and morning low of 62°F16°C. Light wind from the SW around 4 mph7 km/h. 13% chance of drizzle throughout the day. Dry air. Monday Night: Mostly clear, with a low around 59°F15°C. Light wind from the NNW around 3 mph4 km/h. 11% chance of drizzle throughout the night.
ClearHigh 85°F29°CLow 58°F15°CPrecip 0.04 in1.1 mm8%Cloud 12%Wind NNE 5 mph7 km/hTuesday: Mostly clear and warm, with a high of 85°F29°C and morning low of 62°F17°C. Light wind from the NE around 6 mph9 km/h. Dry air. Tuesday Night: Mostly clear, with a low around 58°F15°C. Light wind from the N around 4 mph6 km/h.

15-Day Forecast

Day High Low Precip Cloud Cover Condition Wind
WednesdaySep 2388°F31°C62°F17°C0 in0 mm· —1%ClearNNE 4 mph6 km/h
ThursdaySep 2486°F30°C64°F18°C0 in0 mm· —5%ClearSSW 3 mph6 km/h
FridaySep 2587°F30°C66°F19°C0 in0 mm· —25%ClearSW 3 mph5 km/h
SaturdaySep 2686°F30°C64°F18°C0 in0 mm· —59%Partly CloudySSW 4 mph6 km/h
SundaySep 2776°F24°C64°F18°C0.07 in1.7 mm· 17%53%DrizzleSSW 4 mph6 km/h
MondaySep 2879°F26°C59°F15°C0.06 in1.5 mm· 13%23%DrizzleWNW 3 mph5 km/h
TuesdaySep 2985°F29°C58°F15°C0.04 in1.1 mm· 8%12%ClearNNE 5 mph7 km/h
WednesdaySep 3086°F30°C62°F16°C0.04 in0.9 mm· 7%26%ClearNNE 4 mph7 km/h
ThursdayOct 186°F30°C63°F17°C0.04 in1.1 mm· 7%40%ClearW 4 mph6 km/h
FridayOct 284°F29°C63°F17°C0.08 in2.1 mm· 11%34%DrizzleNW 4 mph6 km/h
SaturdayOct 384°F29°C62°F17°C0.09 in2.3 mm· 12%25%DrizzleNE 4 mph7 km/h
SundayOct 484°F29°C63°F17°C0.05 in1.3 mm· 9%23%ClearNNE 4 mph6 km/h
MondayOct 584°F29°C62°F17°C0.04 in1.1 mm· 8%19%ClearNNE 4 mph7 km/h
TuesdayOct 685°F29°C62°F17°C0.05 in1.3 mm· 7%17%ClearNNE 4 mph7 km/h
WednesdayOct 785°F29°C63°F17°C0.03 in0.8 mm· 5%16%ClearNNE 4 mph7 km/h

Nearby Cities

About This Forecast

This forecast is powered by WeatherMesh, the world's most advanced and accurate weather model powered by AI. WeatherMesh is built on proprietary data from WindBorne's Global Sounding Balloon constellation — the world's largest fleet of autonomous, long-duration weather balloons — collecting observations across 100% of Earth, including over oceans and remote regions where no other data exists.

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Coordinates: 34.4889°N, 118.6229°W·Elevation: 374m·Timezone: America/Los_Angeles·Population: 19,015