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Castle, CA Weather Forecast

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Castle, CA Weather Forecast

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Castle CA weather - Clear - 58°F
Clear
58°F
Updated 5:42 am
Feels Like 65°F
Humidity 87%
Wind N 0 mph
Barometer  29.96 in
Dew Point 55°F
Castle CA weather - Clear - 15°C
Clear
15°C
Updated 5:42 am
Feels Like 19°C
Humidity 87%
Wind N 0 km/h
Barometer  101.4 kPa
Dew Point 13°C
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Castle Weather Forecast

TODAY TONIGHT SATURDAY SATURDAY NIGHT SUNDAY SUNDAY NIGHT MONDAY MONDAY NIGHT TUESDAY TUESDAY NIGHT WEDNESDAY WEDNESDAY NIGHT
Castle, CA Weather - Today Partly Cloudy Castle, CA Weather - Tonight Mostly Clear Castle, CA Weather - Saturday Partly Cloudy Castle, CA Weather - Saturday Night Partly Cloudy Castle, CA Weather - Sunday Patchy Fog Castle, CA Weather - Sunday Night Patchy Fog Castle, CA Weather - Monday Patchy Fog Castle, CA Weather - Monday Night Partly Cloudy Castle, CA Weather - Tuesday Partly Cloudy Castle, CA Weather - Tuesday Night Clear Castle, CA Weather - Wednesday Mostly Sunny Castle, CA Weather - Wednesday Night Clear
Partly Cloudy Mostly Clear Partly Cloudy Partly Cloudy Patchy Fog Patchy Fog Patchy Fog Partly Cloudy Partly Cloudy Clear Mostly Sunny Clear
Hi: 83°FHi: 28°C
 Lo: 57°FLo: 14°C Hi: 88°FHi: 31°C
 Lo: 59°FLo: 15°C Hi: 86°FHi: 30°C
 Lo: 60°FLo: 16°C Hi: 81°FHi: 27°C
 Lo: 57°FLo: 14°C Hi: 85°FHi: 29°C
 Lo: 60°FLo: 16°C Hi: 93°FHi: 34°C
 Lo: 63°FLo: 17°C
POP = Probability of Precipitation.
Weather Outlook Updated: 1135 PM PDT Fri Sep 18 2026 Castle, CA Weather - WeatherWorld.com

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Castle Forecast Discussion

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Issued: 432 AM PDT Sat Sep 19 2026

Discussion

...FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE... SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO COUNTIES...

...UPDATED AVIATION DISCUSSION...

The 00z sounding Friday afternoon shows a well mixed marine boundary layer, around 3000 feet deep. Low clouds will be patchy overnight through the coastal basin and scatter out to the coast between 8-11 AM this morning.

While the coastal basin will maintain modest minimum relative humidity values (30-60% inland, 60-80% coast...