April 12, 2026 4:18 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
4:18 am, Apr 12, 2026
temperature icon 46°F
scattered clouds
Humidity: 78 %
Pressure: 1012 mb
Wind: 12 mph
Wind Gust: 19 mph
Clouds: 45%
Visibility: 10 km
Sunrise: 6:21 am
Sunset: 7:18 pm
  • Temperature
  • Precipitation
  • Rain Chance
  • Wind
  • Humidity
  • Pressure
5:00 am
temperature icon
45°/45°°F 0.23 mm 23% 12 mph 79% 1012 mb 0 mm/h
8:00 am
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46°/47°°F 0.89 mm 89% 12 mph 81% 1012 mb 0 mm/h
11:00 am
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48°/49°°F 1 mm 100% 12 mph 85% 1013 mb 0 mm/h
2:00 pm
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49°/49°°F 1 mm 100% 13 mph 86% 1013 mb 0 mm/h
5:00 pm
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42°/42°°F 0.98 mm 98% 15 mph 67% 1013 mb 0 mm/h
8:00 pm
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44°/44°°F 0 mm 0% 13 mph 71% 1015 mb 0 mm/h
11:00 pm
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41°/41°°F 0 mm 0% 10 mph 82% 1017 mb 0 mm/h
2:00 am
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40°/40°°F 0 mm 0% 8 mph 88% 1016 mb 0 mm/h