Current Conditions

Castaic, California

74°F23°C
Clear

Wind

SSW 5 mph9 km/h

Humidity

30%

Cloud Cover

0%

As of Wednesday, September 2, 2026 at 11:13 AM PDT

Today's Outlook

Day

Mostly clear and warm, with a high of 79°F26°C and morning low of 62°F17°C. Breezy from the SSW at 6 to 9 mph9 to 14 km/h. Dry air.

Night

Mostly clear, with a low around 57°F14°C. Light wind from the SSW around 2 mph4 km/h.

7-Day Forecast

DayConditionHigh (°F)Low (°F)Precip (mm)Cloud Cover (%)Wind (mph)
ClearHigh 79°F26°CLow 57°F14°CPrecip 0 in0 mmCloud 1%Wind SSW 4 mph7 km/hWednesday: Mostly clear and warm, with a high of 79°F26°C and morning low of 62°F17°C. Breezy from the SSW at 6 to 9 mph9 to 14 km/h. Dry air. Wednesday Night: Mostly clear, with a low around 57°F14°C. Light wind from the SSW around 2 mph4 km/h.
ClearHigh 79°F26°CLow 60°F15°CPrecip 0 in0 mmCloud 2%Wind SSW 4 mph7 km/hThursday: Mostly clear and warm, with a high of 79°F26°C and morning low of 63°F17°C. Breezy from the SSW at 6 to 9 mph10 to 14 km/h. Dry air. Thursday Night: Mostly clear, with a low around 60°F15°C. Light wind from the SSW around 3 mph4 km/h.
ClearHigh 79°F26°CLow 59°F15°CPrecip 0 in0 mmCloud 8%Wind SSW 4 mph7 km/hFriday: Mostly clear and warm, with a high of 79°F26°C and morning low of 62°F17°C. Breezy from the SSW at 6 to 9 mph10 to 14 km/h. Friday Night: Mostly clear, with a low around 59°F15°C. Light wind from the SSW around 2 mph4 km/h.
ClearHigh 82°F28°CLow 59°F15°CPrecip 0 in0.1 mm4%Cloud 4%Wind SSW 4 mph7 km/hSaturday: Mostly clear and warm, with a high of 82°F28°C and morning low of 64°F18°C. Breezy from the SSW at 6 to 10 mph10 to 16 km/h. Dry air. Saturday Night: Mostly clear, with a low around 59°F15°C. Light wind from the WSW around 2 mph3 km/h.
DrizzleHigh 80°F27°CLow 62°F17°CPrecip 0.07 in1.7 mm15%Cloud 14%Wind SSW 4 mph7 km/hSunday: Mostly clear and warm, with a high of 80°F27°C and morning low of 65°F18°C. Breezy from the SSW at 6 to 9 mph10 to 14 km/h. 15% chance of drizzle throughout the day. Dry air. Sunday Night: Mostly clear, with a low around 62°F17°C. Light wind from the WSW around 2 mph3 km/h. 13% chance of drizzle overnight.
ClearHigh 84°F29°CLow 57°F14°CPrecip 0 in0 mmCloud 11%Wind WSW 4 mph6 km/hMonday: Mostly clear and warm, with a high of 84°F29°C and morning low of 63°F17°C. Breezy from the SW at 5 to 7 mph8 to 11 km/h. Dry air. Monday Night: Mostly clear, with a low around 57°F14°C. Light wind from the NNW around 3 mph4 km/h.
ClearHigh 85°F30°CLow 60°F15°CPrecip 0.04 in0.9 mm4%Cloud 28%Wind SW 4 mph6 km/hTuesday: Partly cloudy and warm, with a high of 85°F30°C and morning low of 64°F18°C. Breezy from the SSW at 5 to 7 mph8 to 11 km/h. Dry air. Tuesday Night: Partly cloudy, with a low around 60°F15°C. Light wind from the NW around 3 mph4 km/h.

15-Day Forecast

Day High Low Precip Cloud Cover Condition Wind
WednesdaySep 279°F26°C57°F14°C0 in0 mm· —1%ClearSSW 4 mph7 km/h
ThursdaySep 379°F26°C60°F15°C0 in0 mm· —2%ClearSSW 4 mph7 km/h
FridaySep 479°F26°C59°F15°C0 in0 mm· —8%ClearSSW 4 mph7 km/h
SaturdaySep 582°F28°C59°F15°C0 in0.1 mm· 4%4%ClearSSW 4 mph7 km/h
SundaySep 680°F27°C62°F17°C0.07 in1.7 mm· 15%14%DrizzleSSW 4 mph7 km/h
MondaySep 784°F29°C57°F14°C0 in0 mm· —11%ClearWSW 4 mph6 km/h
TuesdaySep 885°F30°C60°F15°C0.04 in0.9 mm· 4%28%ClearSW 4 mph6 km/h
WednesdaySep 986°F30°C63°F17°C0.02 in0.4 mm· 6%25%ClearSSW 4 mph6 km/h
ThursdaySep 1085°F30°C64°F18°C0.02 in0.6 mm· 7%19%ClearSSW 4 mph6 km/h
FridaySep 1184°F29°C64°F18°C0.03 in0.8 mm· 5%21%ClearSSW 4 mph6 km/h
SaturdaySep 1282°F28°C63°F17°C0.09 in2.2 mm· 7%33%ClearSSW 4 mph6 km/h
SundaySep 1383°F28°C63°F17°C0.08 in2 mm· 11%35%DrizzleSSW 4 mph6 km/h
MondaySep 1482°F28°C63°F17°C0.08 in2 mm· 12%35%DrizzleSSW 4 mph6 km/h
TuesdaySep 1583°F28°C63°F17°C0.04 in0.9 mm· 9%27%ClearSSW 4 mph6 km/h
WednesdaySep 1684°F29°C63°F17°C0.05 in1.2 mm· 9%24%ClearSW 4 mph6 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