August 23, 2026 8:49 AM

Monday September 16 – Friday September 20 Work Week’s Forecast for SoCal

SOUTHERN CALIFORNIA, CA. (Pain In The Pass) >> This week’s weather forecast for Monday September 16 through Friday September 20 for Southern California. Check out the 5-day forecast below in your area.

Cajon Pass/Inland Empire Valley Area Aveage Weather/Temps:

Monday will be cool, partly sunny with morning fog and a chance of light rain showers, and a high of 72°. Tuesday will be warm, sunny, and a high of 77°. Wednesday will be warm, sunny, and a high of 75°. Thursday will be warm, partly sunny with morning fog and a chance of light rain showers, and a high of 76°. Friday will be warm, mostly sunny, and a high of 85°.

High Deserts Area Aveage Weather/Temps:

Monday will be warm, partly sunny, gusty winds, and a high of 75+°. Tuesday will be warm, sunny windy, and a high of 80+°. Wednesday will be warm, sunny, windy, and a high of 76+°. Thursday will be warm, sunny, gusty winds, and a high of 77+°. Friday will be hot, sunny, and gusty winds, and a high 85+°. Higher temps in the Barstow area.

Mountains Area Aveage Weather/Temps:

Monday will be cool, partly sunny, gusty winds, and a high of 57°. Tuesday will be warm, sunny, windy, and a high of 63°. Wednesday will be warm, sunny, windy and a high of 61°. Thursday will be warm, sunny, gusty winds, and a high of 60°. Friday will be warm, sunny, windy, and a high of 68°.

*Timing/Weather on each day may change.

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Cajon Pass
8:49 am, Aug 23, 2026
temperature icon 83°F
clear sky
Humidity: 24 %
Pressure: 1014 mb
Wind: 4 mph
Wind Gust: 3 mph
Clouds: 0%
Visibility: 10 km
Sunrise: 6:16 am
Sunset: 7:28 pm
  • Temperature
  • Precipitation
  • Rain Chance
  • Wind
  • Humidity
  • Pressure
11:00 am
temperature icon
84°/86°°F 0 mm 0% 10 mph 23% 1013 mb 0 mm/h
2:00 pm
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90°/94°°F 0 mm 0% 16 mph 15% 1012 mb 0 mm/h
5:00 pm
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90°/90°°F 0 mm 0% 15 mph 13% 1011 mb 0 mm/h
8:00 pm
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79°/79°°F 0 mm 0% 9 mph 27% 1013 mb 0 mm/h
11:00 pm
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73°/73°°F 0 mm 0% 6 mph 33% 1014 mb 0 mm/h
2:00 am
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70°/70°°F 0 mm 0% 4 mph 32% 1014 mb 0 mm/h
5:00 am
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67°/67°°F 0 mm 0% 2 mph 28% 1014 mb 0 mm/h
8:00 am
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76°/76°°F 0 mm 0% 2 mph 17% 1015 mb 0 mm/h