May 23, 2026 3:42 PM

Rollcoaster of Weather in this Work Week 5 Day Forecast

SOUTHERN CALIFORNIA, CA. (Pain In The Pass) >> This week’s weather forecast for Monday September 15 through Friday September 19 for Southern California. Check out the 5-day forecast below in your area.

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

Monday will be hot, sunny, and a high of 95°. Tuesday will be hot, sunny, with a high of 98°. Wednesday will be hot, mostly sunny, and a high of 96°. Thursday will be hot, partly sunny with a chance of rain showers and thunderstorms, windy, and a high of 94°. Friday will be hot, partly sunny with a chance of rain showers and thunderstorms, windy, and a high of 91°.

High Deserts Area Average Weather/Temps:

Monday will be hot, sunny, windy, and a high of 93+°. Tuesday will be hot, mostly sunny, windy, and a high of 94+°. Wednesday will be hot, mostly sunny with a chance of rain showers and thunderstorms, windy and a high of 95+°. Thursday will be hot, partly sunny with a chance of rain showers and thunderstorms, windy, and a high of 93+°. Friday will be hot, partly sunny with a chance of rain showers and thunderstorms, windy, and a high 90+°. Higher temps in the Barstow area.

Mountains Area Average Weather/Temps:

Monday will be warm, sunny, windy, and a high of 73°. Tuesday will be warm, mostly sunny, windy, and a high of 74°. Wednesday will be warm, mostly sunny with a chance of rain showers and thunderstorms, windy and a high of 73°. Thursday will be warm, partly sunny with a chance of rain showers and thunderstorms, windy, and a high of 70°. Friday will be warm, partly sunny with a chance of rain showers and thunderstorms, windy, and a high of 68°.

*Timing of the Weather on each day can change.

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Cajon Pass
3:42 pm, May 23, 2026
temperature icon 77°F
clear sky
Humidity: 22 %
Pressure: 1012 mb
Wind: 17 mph
Wind Gust: 26 mph
Clouds: 0%
Visibility: 10 km
Sunrise: 5:42 am
Sunset: 7:50 pm
  • Temperature
  • Precipitation
  • Rain Chance
  • Wind
  • Humidity
  • Pressure
5:00 pm
temperature icon
66°/77°°F 0 mm 0% 15 mph 22% 1011 mb 0 mm/h
8:00 pm
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60°/71°°F 0 mm 0% 12 mph 32% 1012 mb 0 mm/h
11:00 pm
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55°/62°°F 0 mm 0% 9 mph 49% 1013 mb 0 mm/h
2:00 am
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53°/53°°F 0 mm 0% 5 mph 66% 1014 mb 0 mm/h
5:00 am
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50°/50°°F 0 mm 0% 3 mph 62% 1014 mb 0 mm/h
8:00 am
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66°/66°°F 0 mm 0% 4 mph 38% 1014 mb 0 mm/h
11:00 am
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74°/74°°F 0 mm 0% 8 mph 30% 1013 mb 0 mm/h
2:00 pm
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78°/78°°F 0 mm 0% 20 mph 26% 1012 mb 0 mm/h