Current Conditions

Castaic, California

63°F17°C

Clear

Wind

SSW 2 mph4 km/h

Humidity

83%

Cloud Cover

40%

As of Thursday, August 13, 2026 at 3:35 AM PDT

Today's Outlook

Day

Partly cloudy and warm, with a high of 79°F26°C and morning low of 66°F19°C. Breezy from the SSW at 7 to 10 mph12 to 16 km/h.

Night

Partly cloudy, with a low around 63°F17°C. Light wind from the SSW around 3 mph5 km/h.

7-Day Forecast

Condition	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Wind (mph)
Clear	High 79°F26°C	Low 63°F17°C	Precip 0 in0 mm—	Cloud 31%	Wind SSW 5 mph8 km/h	Thursday: Partly cloudy and warm, with a high of 79°F26°C and morning low of 66°F19°C. Breezy from the SSW at 7 to 10 mph12 to 16 km/h. Thursday Night: Partly cloudy, with a low around 63°F17°C. Light wind from the SSW around 3 mph5 km/h.
Clear	High 80°F27°C	Low 62°F17°C	Precip 0 in0.1 mm2%	Cloud 18%	Wind SSW 4 mph7 km/h	Friday: 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. Friday Night: Mostly clear, with a low around 62°F17°C. Light wind from the SSW around 3 mph4 km/h.
Clear	High 83°F28°C	Low 62°F16°C	Precip 0 in0 mm—	Cloud 5%	Wind SSW 4 mph6 km/h	Saturday: Mostly clear and warm, with a high of 83°F28°C and morning low of 67°F19°C. Breezy from the S at 5 to 8 mph9 to 13 km/h. Saturday Night: Mostly clear, with a low around 62°F16°C. Light wind from the SW around 2 mph3 km/h.
Clear	High 88°F31°C	Low 63°F17°C	Precip 0 in0 mm—	Cloud 27%	Wind SSW 3 mph6 km/h	Sunday: Mostly clear and hot, with a high of 88°F31°C and morning low of 69°F20°C. Breezy from the SSW at 5 to 7 mph8 to 12 km/h. Dry air. Sunday Night: Partly cloudy, with a low around 63°F17°C. Light wind from the WSW around 2 mph3 km/h.
Clear	High 89°F32°C	Low 67°F19°C	Precip 0 in0 mm—	Cloud 39%	Wind SSW 4 mph6 km/h	Monday: Partly cloudy and hot, with a high of 89°F32°C and morning low of 71°F22°C. Breezy from the SSW at 5 to 8 mph8 to 12 km/h. Dry air. Monday Night: Partly cloudy, with a low around 67°F19°C. Light wind from the WSW around 2 mph3 km/h.
Clear	High 90°F32°C	Low 67°F19°C	Precip 0 in0 mm—	Cloud 25%	Wind SW 4 mph6 km/h	Tuesday: Mostly clear and hot, with a high of 90°F32°C and morning low of 72°F22°C. Breezy from the SW at 5 to 7 mph8 to 12 km/h. Dry air. Tuesday Night: Partly cloudy, with a low around 67°F19°C. Light wind from the W around 2 mph4 km/h.
Clear	High 90°F32°C	Low 67°F20°C	Precip 0 in0 mm—	Cloud 17%	Wind SW 4 mph6 km/h	Wednesday: Mostly clear and hot, with a high of 90°F32°C and morning low of 73°F23°C. Breezy from the SSW at 5 to 8 mph8 to 12 km/h. Dry air. Wednesday Night: Mostly clear, with a low around 67°F20°C. Light wind from the WSW around 2 mph4 km/h.

15-Day Forecast

	Day	High	Low	Precip	Cloud Cover	Condition	Wind
	ThursdayAug 13	79°F26°C	63°F17°C	0 in0 mm· —	31%	Clear	SSW 5 mph8 km/h
DayPartly cloudy and warm, with a high of 79°F26°C and morning low of 66°F19°C. Breezy from the SSW at 7 to 10 mph12 to 16 km/h. NightPartly cloudy, with a low around 63°F17°C. Light wind from the SSW around 3 mph5 km/h.
	FridayAug 14	80°F27°C	62°F17°C	0 in0.1 mm· 2%	18%	Clear	SSW 4 mph7 km/h
DayMostly 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. NightMostly clear, with a low around 62°F17°C. Light wind from the SSW around 3 mph4 km/h.
	SaturdayAug 15	83°F28°C	62°F16°C	0 in0 mm· —	5%	Clear	SSW 4 mph6 km/h
DayMostly clear and warm, with a high of 83°F28°C and morning low of 67°F19°C. Breezy from the S at 5 to 8 mph9 to 13 km/h. NightMostly clear, with a low around 62°F16°C. Light wind from the SW around 2 mph3 km/h.
	SundayAug 16	88°F31°C	63°F17°C	0 in0 mm· —	27%	Clear	SSW 3 mph6 km/h
DayMostly clear and hot, with a high of 88°F31°C and morning low of 69°F20°C. Breezy from the SSW at 5 to 7 mph8 to 12 km/h. Dry air. NightPartly cloudy, with a low around 63°F17°C. Light wind from the WSW around 2 mph3 km/h.
	MondayAug 17	89°F32°C	67°F19°C	0 in0 mm· —	39%	Clear	SSW 4 mph6 km/h
DayPartly cloudy and hot, with a high of 89°F32°C and morning low of 71°F22°C. Breezy from the SSW at 5 to 8 mph8 to 12 km/h. Dry air. NightPartly cloudy, with a low around 67°F19°C. Light wind from the WSW around 2 mph3 km/h.
	TuesdayAug 18	90°F32°C	67°F19°C	0 in0 mm· —	25%	Clear	SW 4 mph6 km/h
DayMostly clear and hot, with a high of 90°F32°C and morning low of 72°F22°C. Breezy from the SW at 5 to 7 mph8 to 12 km/h. Dry air. NightPartly cloudy, with a low around 67°F19°C. Light wind from the W around 2 mph4 km/h.
	WednesdayAug 19	90°F32°C	67°F20°C	0 in0 mm· —	17%	Clear	SW 4 mph6 km/h
DayMostly clear and hot, with a high of 90°F32°C and morning low of 73°F23°C. Breezy from the SSW at 5 to 8 mph8 to 12 km/h. Dry air. NightMostly clear, with a low around 67°F20°C. Light wind from the WSW around 2 mph4 km/h.
	ThursdayAug 20	90°F32°C	67°F19°C	0 in0 mm· —	15%	Clear	SW 4 mph6 km/h
DayMostly clear and hot, with a high of 90°F32°C and morning low of 73°F23°C. Breezy from the SSW at 5 to 7 mph8 to 12 km/h. NightMostly clear, with a low around 67°F19°C. Light wind from the WSW around 2 mph4 km/h.
	FridayAug 21	90°F32°C	68°F20°C	0 in0 mm· —	17%	Clear	SSW 4 mph6 km/h
DayMostly clear and hot, with a high of 90°F32°C and morning low of 73°F23°C. Breezy from the SSW at 5 to 8 mph9 to 12 km/h. NightMostly clear, with a low around 68°F20°C. Light wind from the WSW around 2 mph4 km/h.
	SaturdayAug 22	90°F32°C	68°F20°C	0 in0.1 mm· 3%	16%	Clear	SSW 4 mph6 km/h
DayMostly clear and hot, with a high of 90°F32°C and morning low of 75°F24°C. Breezy from the SSW at 5 to 8 mph8 to 12 km/h. NightMostly clear, with a low around 68°F20°C. Light wind from the WSW around 2 mph3 km/h.
	SundayAug 23	90°F32°C	68°F20°C	0 in0 mm· —	11%	Clear	SSW 4 mph6 km/h
DayMostly clear and hot, with a high of 90°F32°C and morning low of 73°F23°C. Breezy from the SSW at 5 to 8 mph9 to 13 km/h. Dry air. NightMostly clear, with a low around 68°F20°C. Light wind from the WSW around 2 mph3 km/h.
	MondayAug 24	90°F32°C	66°F19°C	0 in0.1 mm· 3%	10%	Clear	SSW 4 mph6 km/h
DayMostly clear and hot, with a high of 90°F32°C and morning low of 73°F23°C. Breezy from the SSW at 5 to 8 mph9 to 13 km/h. Dry air. NightMostly clear, with a low around 66°F19°C. Light wind from the WSW around 2 mph3 km/h.
	TuesdayAug 25	89°F32°C	67°F19°C	0 in0.1 mm· 3%	11%	Clear	SSW 4 mph6 km/h
DayMostly clear and hot, with a high of 89°F32°C and morning low of 71°F22°C. Breezy from the SSW at 5 to 8 mph9 to 13 km/h. Dry air. NightMostly clear, with a low around 67°F19°C. Light wind from the WSW around 2 mph3 km/h.
	WednesdayAug 26	89°F32°C	66°F19°C	0 in0.1 mm· 2%	23%	Clear	SSW 4 mph6 km/h
DayMostly clear and hot, with a high of 89°F32°C and morning low of 72°F22°C. Breezy from the SSW at 5 to 8 mph8 to 12 km/h. Dry air. NightMostly clear, with a low around 66°F19°C. Light wind from the W around 2 mph3 km/h.
	ThursdayAug 27	88°F31°C	67°F19°C	0.03 in0.7 mm· 8%	31%	Clear	SW 4 mph6 km/h
DayPartly cloudy and hot, with a high of 88°F31°C and morning low of 71°F22°C. Breezy from the SSW at 5 to 7 mph8 to 12 km/h. Dry air. NightPartly cloudy, with a low around 67°F19°C. Light wind from the WNW around 2 mph4 km/h.

Nearby Cities

Valencia3 mi5 km Stevenson Ranch7 mi12 km Santa Clarita8 mi13 km Canyon Country10 mi16 km Sylmar16 mi26 km Chatsworth16 mi26 km

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.

WeatherMesh consistently outperforms legacy models in independent benchmarks. View Benchmarks →

Access WeatherMesh forecasts programmatically via our API. API Documentation →

How to Access Weather Forecasts

Pattern	Example	Description
/weather/{country}/{city}/	/weather/united-states/san-francisco/	City forecast (canonical URL)
/weather/{city}/	/weather/tokyo/	Shorthand — redirects to most populous match
/weather/{country}/{region}/{city}/	/weather/united-states/california/san-francisco/	With region — redirects to canonical
/weather/nearby?lat={lat}&lon={lon}	/weather/nearby?lat=48.1&lon=11.5	Find nearest city by coordinates
/weather/{country}/	/weather/germany/	Country index — all cities by region

Country and city names use lowercase slugs with hyphens (e.g. united-states, san-francisco). Arbitrary city names are supported — if not in our database, we geocode the name and serve the forecast for that location.

For programmatic access, use theWindBorne Forecast APIwhich returns structured JSON for any coordinates worldwide.

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