June 21, 2026 2:27 PM

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
2:27 pm, Jun 21, 2026
temperature icon 80°F
clear sky
Humidity: 17 %
Pressure: 1010 mb
Wind: 16 mph
Wind Gust: 16 mph
Clouds: 3%
Visibility: 10 km
Sunrise: 5:37 am
Sunset: 8:04 pm
  • Temperature
  • Precipitation
  • Rain Chance
  • Wind
  • Humidity
  • Pressure
5:00 pm
temperature icon
71°/77°°F 0 mm 0% 12 mph 21% 1009 mb 0 mm/h
8:00 pm
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64°/70°°F 0 mm 0% 8 mph 37% 1010 mb 0 mm/h
11:00 pm
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59°/59°°F 0 mm 0% 6 mph 55% 1012 mb 0 mm/h
2:00 am
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55°/55°°F 0 mm 0% 4 mph 50% 1012 mb 0 mm/h
5:00 am
temperature icon
55°/55°°F 0 mm 0% 2 mph 40% 1012 mb 0 mm/h
8:00 am
temperature icon
65°/65°°F 0 mm 0% 2 mph 19% 1012 mb 0 mm/h
11:00 am
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76°/76°°F 0 mm 0% 6 mph 16% 1012 mb 0 mm/h
2:00 pm
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80°/80°°F 0 mm 0% 17 mph 11% 1010 mb 0 mm/h