Current Conditions

Castaic, California

49°F9°C
Clear

Wind

SW 4 mph6 km/h

Humidity

86%

Cloud Cover

10%

As of Tuesday, October 13, 2026 at 12:54 AM PDT

Today's Outlook

Day

Mostly cloudy and mild, with a high of 59°F15°C. Breezy from the SSW at 8 mph12 km/h. Dry air.

Night

Mostly clear, with a low around 51°F11°C. Breezy from the SW at 5 to 7 mph9 to 12 km/h.

7-Day Forecast

DayConditionHigh (°F)Low (°F)Precip (mm)Cloud Cover (%)Wind (mph)
ClearHigh 59°F15°CLow 51°F11°CPrecip 0 in0.1 mm3%Cloud 33%Wind SSW 6 mph9 km/hMonday: Mostly cloudy and mild, with a high of 59°F15°C. Breezy from the SSW at 8 mph12 km/h. Dry air. Monday Night: Mostly clear, with a low around 51°F11°C. Breezy from the SW at 5 to 7 mph9 to 12 km/h.
ClearHigh 66°F19°CLow 45°F7°CPrecip 0 in0 mm—Cloud 5%Wind NNE 6 mph9 km/hTuesday: Mostly clear and mild, with a high of 66°F19°C and morning low of 46°F8°C. Breezy from the NNE at 6 to 8 mph10 to 14 km/h. Dry air. Tuesday Night: Mostly clear, with a low around 45°F7°C. Breezy from the NNE at 5 to 8 mph8 to 13 km/h.
ClearHigh 76°F24°CLow 48°F9°CPrecip 0 in0 mm—Cloud 0%Wind NNE 6 mph9 km/hWednesday: Mostly clear and warm, with a high of 76°F24°C and morning low of 50°F10°C. Breezy from the NE at 6 to 7 mph10 to 11 km/h. Very dry. Wednesday Night: Mostly clear, with a low around 48°F9°C. Light wind from the N around 6 mph9 km/h.
ClearHigh 79°F26°CLow 56°F13°CPrecip 0 in0 mm—Cloud 0%Wind NE 11 mph18 km/hThursday: Mostly clear and warm, with a high of 79°F26°C and morning low of 57°F14°C. Breezy from the NE at 13 to 15 mph21 to 24 km/h. Very dry. Thursday Night: Mostly clear, with a low around 56°F13°C. Breezy from the NNE at 9 to 13 mph15 to 21 km/h.
ClearHigh 81°F27°CLow 68°F20°CPrecip 0 in0 mm—Cloud 3%Wind NE 13 mph21 km/hFriday: Mostly clear and warm, with a high of 81°F27°C and morning low of 68°F20°C. Windy from the NE at 15 to 18 mph24 to 28 km/h. Dry air. Friday Night: Mostly clear, with a low around 68°F20°C. Breezy from the NE at 11 to 13 mph17 to 20 km/h.
ClearHigh 81°F27°CLow 66°F19°CPrecip 0 in0 mm—Cloud 8%Wind NE 7 mph12 km/hSaturday: Mostly clear and warm, with a high of 81°F27°C and morning low of 66°F19°C. Breezy from the NE at 8 to 10 mph13 to 16 km/h. Dry air. Saturday Night: Mostly clear, with a low around 66°F19°C. Breezy from the NNE at 7 to 8 mph11 to 13 km/h.
ClearHigh 80°F27°CLow 58°F14°CPrecip 0 in0 mm—Cloud 1%Wind N 5 mph8 km/hSunday: Mostly clear and warm, with a high of 80°F27°C and morning low of 59°F15°C. Light wind from the ENE around 5 mph8 km/h. Dry air. Sunday Night: Mostly clear, with a low around 58°F14°C. Light wind from the NNW around 5 mph8 km/h.

15-Day Forecast

Day High Low Precip Cloud Cover Condition Wind
MondayOct 1259°F15°C51°F11°C0 in0.1 mm· 3%33%ClearSSW 6 mph9 km/h
TuesdayOct 1366°F19°C45°F7°C0 in0 mm· —5%ClearNNE 6 mph9 km/h
WednesdayOct 1476°F24°C48°F9°C0 in0 mm· —0%ClearNNE 6 mph9 km/h
ThursdayOct 1579°F26°C56°F13°C0 in0 mm· —0%ClearNE 11 mph18 km/h
FridayOct 1681°F27°C68°F20°C0 in0 mm· —3%ClearNE 13 mph21 km/h
SaturdayOct 1781°F27°C66°F19°C0 in0 mm· —8%ClearNE 7 mph12 km/h
SundayOct 1880°F27°C58°F14°C0 in0 mm· —1%ClearN 5 mph8 km/h
MondayOct 1975°F24°C58°F14°C0 in0 mm· —4%ClearSSW 6 mph9 km/h
TuesdayOct 2064°F18°C55°F13°C0.06 in1.5 mm· 23%35%DrizzleSSW 6 mph10 km/h
WednesdayOct 2162°F17°C51°F10°C0.11 in2.7 mm· 36%36%ShowersSW 6 mph9 km/h
ThursdayOct 2266°F19°C49°F10°C0.07 in1.8 mm· 18%24%DrizzleNNE 6 mph9 km/h
FridayOct 2369°F20°C50°F10°C0.02 in0.6 mm· 9%21%ClearSW 5 mph8 km/h
SaturdayOct 2470°F21°C51°F11°C0.01 in0.3 mm· 5%22%ClearNE 6 mph9 km/h
SundayOct 2571°F21°C53°F12°C0.01 in0.3 mm· 4%20%ClearNE 6 mph9 km/h
MondayOct 2670°F21°C54°F12°C0.01 in0.3 mm· 6%23%ClearNNE 6 mph9 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.

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

Access WeatherMesh forecasts programmatically via our API. API Documentation →

How to Access Weather Forecasts

PatternExampleDescription
/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=11.5Find 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