February 20, 2026 10:06 AM

Roller Coaster Weather in this Weeks 5 Day

SOUTHERN CALIFORNIA, CA. (Pain In The Pass) >> This week’s weather forecast for Monday September 8 through Friday September 12 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 92°. Tuesday will be hot, sunny, with a high of 85°. Wednesday will be hot, sunny, and a high of 80°. Thursday will be hot, sunny, and a high of 80°. Friday will be hot, mostly sunny and a high of 83°.

High Deserts Area Average Weather/Temps:

Monday will be hot, sunny, windy, and a high of 92+°. Tuesday will be hot, sunny, windy, and a high of 85+°. Wednesday will be hot, sunny, windy and a high of 81+°. Thursday will be hot, mostly sunny, windy, and a high of 82+°. Friday will be hot, mostly sunny, windy, and a high 87+°. Higher temps in the Barstow area.

Mountains Area Average Weather/Temps:

Monday will be cool, sunny, windy, and a high of 73°. Tuesday will be cool, sunny. windy, and a high of 70°. Wednesday will be cool, sunny, windy and a high of 65°. Thursday will be cool, sunny, windy, and a high of 65°. Friday will be cool, mostly sunny, windy, and a high of 67°.

*Timing of the Weather on each day can change.

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Cajon Pass
10:06 am, Feb 20, 2026
temperature icon 37°F
overcast clouds
Humidity: 64 %
Pressure: 1017 mb
Wind: 7 mph
Wind Gust: 13 mph
Clouds: 94%
Visibility: 10 km
Sunrise: 6:29 am
Sunset: 5:37 pm
  • Temperature
  • Precipitation
  • Rain Chance
  • Wind
  • Humidity
  • Pressure
10:00 am
temperature icon
37°/38°°F 0 mm 0% 8 mph 64% 1017 mb 0 mm/h
1:00 pm
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40°/45°°F 0 mm 0% 4 mph 61% 1017 mb 0 mm/h
4:00 pm
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43°/46°°F 0 mm 0% 3 mph 55% 1016 mb 0 mm/h
7:00 pm
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35°/35°°F 0 mm 0% 6 mph 61% 1019 mb 0 mm/h
10:00 pm
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34°/34°°F 0 mm 0% 4 mph 61% 1021 mb 0 mm/h
1:00 am
temperature icon
33°/33°°F 0 mm 0% 3 mph 62% 1022 mb 0 mm/h
4:00 am
temperature icon
32°/32°°F 0 mm 0% 5 mph 63% 1022 mb 0 mm/h
7:00 am
temperature icon
33°/33°°F 0 mm 0% 5 mph 63% 1024 mb 0 mm/h