October 12, 2026 11:52 PM

Cooler Temps at the beginning, then another Warm-Up at the End

SOUTHERN CALIFORNIA, CA. (Pain In The Pass) >> This week weather forecast for Monday September 28 through Friday October 2 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, mostly sunny with a chance of rain showers, and a high 84°. Tuesday will be hot, partly sunny with gusty winds, and the high of 88°. Wednesday will be hot, sunny gusty winds, and a high of 92°. Thursday will be hot, mostly sunny, and a high of 97°. Friday will be hot, mostly sunny, and a high of 99°.   

High Deserts Area Average Weather/Temps:

Monday will be hot, mostly sunny with a chance of thunderstorms, windy, and a high of 81+°. Tuesday will be hot, partly sunny, windy, and a high of 88+°. Wednesday will be hot, sunny, windy and a high of 94+°. Thursday will be hot, sunny, windy, and a high of 96+°. Friday will be hot, mostly sunny, windy, and a high 96+°. Higher temps in the Barstow area. 

Mountains Area Average Weather/Temps:

Monday will be cool, mostly sunny with a chance of thunderstorms, windy, and a high of 64°. Tuesday will be cool., partly sunny, windy, and a high of 67°. Wednesday will be warm, sunny, windy, and a high of 74°. Thursday will be warm, sunny, windy and a high of 76°. Friday will be warm, mostly sunny, windy, and a high of 76°.

*Timing of the Weather on each day can change.

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Cajon Pass
11:52 pm, Oct 12, 2026
temperature icon 46°F
scattered clouds
Humidity: 85 %
Pressure: 1014 mb
Wind: 11 mph
Wind Gust: 10 mph
Clouds: 30%
Visibility: 0 km
Sunrise: 6:52 am
Sunset: 6:19 pm
  • Temperature
  • Precipitation
  • Rain Chance
  • Wind
  • Humidity
  • Pressure
2:00 am
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45°/46°°F 0 mm 0% 7 mph 86% 1014 mb 0 mm/h
5:00 am
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42°/43°°F 0 mm 0% 5 mph 87% 1014 mb 0 mm/h
8:00 am
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47°/47°°F 0 mm 0% 4 mph 65% 1016 mb 0 mm/h
11:00 am
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55°/55°°F 0 mm 0% 12 mph 50% 1018 mb 0 mm/h
2:00 pm
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58°/58°°F 0 mm 0% 7 mph 45% 1017 mb 0 mm/h
5:00 pm
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57°/57°°F 0 mm 0% 7 mph 44% 1017 mb 0 mm/h
8:00 pm
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50°/50°°F 0 mm 0% 1 mph 60% 1019 mb 0 mm/h
11:00 pm
temperature icon
47°/47°°F 0 mm 0% 4 mph 51% 1020 mb 0 mm/h