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James Simpson Park, CA Weather Forecast

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James Simpson Park, CA Weather Forecast

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James Simpson Park CA weather - Clear - 77°F
Clear
77°F
Updated 10:38 am
Feels Like 73°F
Humidity 27%
Wind SSW 5 mph
Barometer  30.05 in
Dew Point 41°F
James Simpson Park CA weather - Clear - 25°C
Clear
25°C
Updated 10:38 am
Feels Like 23°C
Humidity 27%
Wind SSW 8 km/h
Barometer  101.8 kPa
Dew Point 5°C
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James Simpson Park Weather Forecast

TODAY TONIGHT THURSDAY THURSDAY NIGHT FRIDAY FRIDAY NIGHT SATURDAY SATURDAY NIGHT SUNDAY SUNDAY NIGHT LABOR DAY MONDAY NIGHT
James Simpson Park, CA Weather - Today Sunny James Simpson Park, CA Weather - Tonight Mostly Clear James Simpson Park, CA Weather - Thursday Sunny James Simpson Park, CA Weather - Thursday Night Mostly Clear James Simpson Park, CA Weather - Friday Mostly Sunny James Simpson Park, CA Weather - Friday Night Mostly Clear James Simpson Park, CA Weather - Saturday Chance Of Showers James Simpson Park, CA Weather - Saturday Night Chance Of Showers James Simpson Park, CA Weather - Sunday Chance Of Showers James Simpson Park, CA Weather - Sunday Night Chance Of Showers James Simpson Park, CA Weather - Labor Day Chance Of T-Storm James Simpson Park, CA Weather - Monday Night Chance Of Showers
Sunny Mostly Clear Sunny Mostly Clear Mostly Sunny Mostly Clear Chance of Showers Chance of Showers Chance of Showers Chance of Showers Chance of T-Storm Chance of Showers
Hi: 88°FHi: 31°C
 Lo: 58°FLo: 14°C Hi: 87°FHi: 31°C
 Lo: 58°FLo: 14°C Hi: 88°FHi: 31°C
 Lo: 63°FLo: 17°C Hi: 90°FHi: 32°C
 Lo: 67°FLo: 19°C Hi: 90°FHi: 32°C
 Lo: 68°FLo: 20°C Hi: 90°FHi: 32°C
 Lo: 66°FLo: 19°C
POP = Probability of Precipitation.
Weather Outlook Updated: 1206 AM PDT Wed Sep 02 2026 James Simpson Park, CA Weather - WeatherWorld.com

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James Simpson Park Forecast Discussion

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Issued: 430 AM PDT Wed Sep 2 2026

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

...UPDATED AVIATION DISCUSSION...

.SHORT TERM (Today through Friday)... A low pressure system along the West Coast will maintain stronger onshore low-level flow and drier southwest flow aloft through Friday with continuing near all-time record sea surface temperatures over the coastal waters. High temperatures for the mountains and inland valleys will remai...