September 12, 2026 9:54 PM

Warm Up Trend in this Weeks 5 Day Forecast

SOUTHERN CALIFORNIA, CA. (Pain In The Pass) >> This week’s weather forecast for Monday May 5 through Friday May 9 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 cool, partly cloudy, morning fog, with a chance of rain showers, and a high of 68°. Tuesday will be cool, partly sunny, and a high of 72°. Wednesday will be warm, mostly sunny morning fog, and a high of 79°. Thursday will be warm, mostly sunny, and a high of 87°. Friday will be warm, mostly sunny, and a high of 91°.

High Deserts Area Average Weather/Temps:

Monday will be cool, partly cloudy with a chance of thunderstorms, windy, and a high of 72+°. Tuesday will be warm, sunny, windy, and a high of 77+°. Wednesday will be warm, sunny, windy and a high of 83+°. Thursday will be warm, mostly sunny, gusty winds, and a high of 88+°. Friday will be warm, mostly sunny, gusty winds, and a high 92+°. Higher temps in the Barstow area.

Mountains Area Average Weather/Temps:

Monday will be cold, partly cloudy with a chance of thunderstorms, wind, and a high of 54°. Tuesday will be cold, sunny, windy, and a high of 60°. Wednesday will be cold, sunny, windy and a high of 64°. Thursday will be cool, mostly sunny, windy, and a high of 69°. Friday will be cold, mostly sunny, windy, and a high of 73°.

*Timing/Weather on each day may change.

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Cajon Pass
9:54 pm, Sep 12, 2026
temperature icon 73°F
clear sky
Humidity: 55 %
Pressure: 1013 mb
Wind: 13 mph
Wind Gust: 10 mph
Clouds: 0%
Visibility: 10 km
Sunrise: 6:30 am
Sunset: 7:01 pm
  • Temperature
  • Precipitation
  • Rain Chance
  • Wind
  • Humidity
  • Pressure
11:00 pm
temperature icon
65°/73°°F 0 mm 0% 6 mph 55% 1013 mb 0 mm/h
2:00 am
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63°/70°°F 0 mm 0% 4 mph 57% 1013 mb 0 mm/h
5:00 am
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60°/64°°F 0 mm 0% 3 mph 57% 1012 mb 0 mm/h
8:00 am
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65°/65°°F 0 mm 0% 3 mph 48% 1013 mb 0 mm/h
11:00 am
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77°/77°°F 0 mm 0% 6 mph 20% 1012 mb 0 mm/h
2:00 pm
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82°/82°°F 0 mm 0% 10 mph 18% 1010 mb 0 mm/h
5:00 pm
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78°/78°°F 0 mm 0% 11 mph 26% 1009 mb 0 mm/h
8:00 pm
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69°/69°°F 0 mm 0% 8 mph 44% 1010 mb 0 mm/h