Current Conditions

Castaic, California

82°F28°C
Clear

Wind

SW 3 mph5 km/h

Humidity

32%

Cloud Cover

1%

As of Tuesday, September 22, 2026 at 4:27 PM PDT

Today's Outlook

Day

Mostly clear and warm, with a high of 82°F28°C and morning low of 73°F23°C. Light wind from the SW around 2 mph4 km/h. Dry air.

Night

Mostly clear, with a low around 67°F20°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 82°F28°CLow 67°F20°CPrecip 0 in0 mmCloud 1%Wind WNW 3 mph4 km/hTuesday: Mostly clear and warm, with a high of 82°F28°C and morning low of 73°F23°C. Light wind from the SW around 2 mph4 km/h. Dry air. Tuesday Night: Mostly clear, with a low around 67°F20°C. Light wind from the NNW around 3 mph5 km/h.
ClearHigh 89°F32°CLow 61°F16°CPrecip 0 in0 mmCloud 0%Wind NNE 4 mph6 km/hWednesday: Mostly clear and hot, with a high of 89°F32°C and morning low of 66°F19°C. Light wind from the E around 5 mph8 km/h. Dry air. Wednesday Night: Mostly clear, with a low around 61°F16°C. Light wind from the N around 3 mph5 km/h.
ClearHigh 86°F30°CLow 63°F17°CPrecip 0 in0 mmCloud 4%Wind SSW 4 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 63°F17°C. Light wind from the WNW around 2 mph4 km/h.
ClearHigh 87°F30°CLow 64°F18°CPrecip 0 in0 mmCloud 33%Wind SW 3 mph6 km/hFriday: Partly cloudy and hot, with a high of 87°F30°C and morning low of 68°F20°C. Breezy from the SSW at 5 to 8 mph8 to 13 km/h. Friday Night: Partly cloudy, with a low around 64°F18°C. Light wind from the WNW around 2 mph3 km/h.
Partly CloudyHigh 85°F30°CLow 64°F18°CPrecip 0 in0 mmCloud 58%Wind SSW 4 mph6 km/hSaturday: Mostly cloudy and warm, with a high of 85°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 78°F25°CLow 64°F18°CPrecip 0.06 in1.4 mm12%Cloud 54%Wind SSW 4 mph6 km/hSunday: Mostly cloudy and warm, with a high of 78°F25°C and morning low of 66°F19°C. Breezy from the SSW at 6 to 8 mph9 to 14 km/h. 12% chance of drizzle throughout the day. Sunday Night: Mostly cloudy, with a low around 64°F18°C. Light wind from the SW around 2 mph3 km/h.
DrizzleHigh 80°F27°CLow 60°F15°CPrecip 0.06 in1.6 mm12%Cloud 27%Wind WNW 3 mph5 km/hMonday: Partly cloudy and warm, with a high of 80°F27°C and morning low of 62°F17°C. Light wind from the SW around 4 mph7 km/h. 11% chance of drizzle throughout the day. Dry air. Monday Night: Partly cloudy, with a low around 60°F15°C. Light wind from the NNW around 3 mph4 km/h. 12% chance of drizzle throughout the night.

15-Day Forecast

Day High Low Precip Cloud Cover Condition Wind
TuesdaySep 2282°F28°C67°F20°C0 in0 mm· —1%ClearWNW 3 mph4 km/h
WednesdaySep 2389°F32°C61°F16°C0 in0 mm· —0%ClearNNE 4 mph6 km/h
ThursdaySep 2486°F30°C63°F17°C0 in0 mm· —4%ClearSSW 4 mph6 km/h
FridaySep 2587°F30°C64°F18°C0 in0 mm· —33%ClearSW 3 mph6 km/h
SaturdaySep 2685°F30°C64°F18°C0 in0 mm· —58%Partly CloudySSW 4 mph6 km/h
SundaySep 2778°F25°C64°F18°C0.06 in1.4 mm· 12%54%DrizzleSSW 4 mph6 km/h
MondaySep 2880°F27°C60°F15°C0.06 in1.6 mm· 12%27%DrizzleWNW 3 mph5 km/h
TuesdaySep 2984°F29°C59°F15°C0.08 in2 mm· 9%14%ClearNNE 4 mph7 km/h
WednesdaySep 3086°F30°C61°F16°C0.09 in2.2 mm· 7%21%ClearNNE 4 mph7 km/h
ThursdayOct 185°F30°C63°F17°C0.04 in1.1 mm· 9%32%ClearNW 4 mph6 km/h
FridayOct 284°F29°C63°F17°C0.04 in0.9 mm· 8%22%ClearN 4 mph7 km/h
SaturdayOct 384°F29°C62°F17°C0.02 in0.5 mm· 7%20%ClearNNE 5 mph7 km/h
SundayOct 484°F29°C63°F17°C0.01 in0.3 mm· 4%19%ClearNNE 4 mph7 km/h
MondayOct 585°F29°C62°F17°C0.01 in0.3 mm· 10%18%DrizzleNNE 4 mph7 km/h
TuesdayOct 685°F30°C63°F17°C0.02 in0.5 mm· 10%21%DrizzleNE 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