April 21, 2026 2:40 AM

Fall like Temps in the 5 Day Forecast

SOUTHERN CALIFORNIA, CA. (Pain In The Pass) >> This week’s weather forecast for Monday September 22 through Friday September 26 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, partly sunny with a chance of rain showers and thunderstorms, and a high of 90°. Tuesday will be hot, partly sunny with a chance of rain showers and thunderstorms, with a high of 94°. Wednesday will be hot, mostly sunny with a chance of rain showers and thunderstorms, and a high of 90°. Thursday will be hot, mostly sunny, and a high of 87°. Friday will be hot, mostly sunny, and a high of 84°.

High Deserts Area Average Weather/Temps:

Monday will be hot, partly sunny with a chance of rain showers and thunderstorms, windy, and a high of 92+°. Tuesday will be hot, partly sunny with a chance of rain showers and thunderstorms, windy, and a high of 90+°. Wednesday will be hot, partly sunny with a chance of rain showers and thunderstorms, windy and a high of 86+°. Thursday will be hot, mostly sunny, windy, and a high of 88+°. Friday will be hot, mostly sunny, windy, and a high 89+°. Higher temps in the Barstow area.

Mountains Area Average Weather/Temps:

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

*Timing of the Weather on each day can change.

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Cajon Pass
2:40 am, Apr 21, 2026
temperature icon 45°F
broken clouds
Humidity: 62 %
Pressure: 1015 mb
Wind: 9 mph
Wind Gust: 11 mph
Clouds: 53%
Visibility: 10 km
Sunrise: 6:10 am
Sunset: 7:25 pm
  • Temperature
  • Precipitation
  • Rain Chance
  • Wind
  • Humidity
  • Pressure
5:00 am
temperature icon
44°/44°°F 0 mm 0% 8 mph 59% 1016 mb 0 mm/h
8:00 am
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49°/51°°F 0 mm 0% 11 mph 43% 1015 mb 0 mm/h
11:00 am
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60°/60°°F 0 mm 0% 16 mph 29% 1015 mb 0 mm/h
2:00 pm
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62°/62°°F 0 mm 0% 21 mph 40% 1014 mb 0 mm/h
5:00 pm
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55°/55°°F 0 mm 0% 17 mph 71% 1014 mb 0 mm/h
8:00 pm
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51°/51°°F 0.36 mm 36% 15 mph 74% 1015 mb 0 mm/h
11:00 pm
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46°/46°°F 0.06 mm 6% 11 mph 75% 1017 mb 0 mm/h
2:00 am
temperature icon
45°/45°°F 0 mm 0% 11 mph 81% 1017 mb 0 mm/h