September 28, 2026 1:29 PM

A Brief Heatwave in the 5 Day Forecast

SOUTHERN CALIFORNIA, CA. (Pain In The Pass) >> This week’s weather forecast for Monday August 4 through Friday August 8 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 95°. Tuesday will be hot, sunny, with a high of 97°. Wednesday will be hot, sunny, and a high of 99°. Thursday will be hot, mostly sunny, and a high of 101°. Friday will be hot, mostly sunny, and a high of 99°.

High Deserts Area Average Weather/Temps:

Monday will be hot, sunny, windy, and a high of 96+°. Tuesday will be hot, sunny, windy, and a high of 99+°. Wednesday will be hot, sunny, windy and a high of 102+°. Thursday will be hot, mostly sunny, windy, and a high of 105+°. Friday will be hot, mostly sunny, windy, and a high 105+°. Higher temps in the Barstow area.

Mountains Area Average Weather/Temps:

Monday will be warm, sunny, windy, and a high of 82°. Tuesday will be warm, sunny, windy, and a high of 83°. Wednesday will be warm, sunny, windy and a high of 84°. Thursday will be warm, mostly sunny, windy, and a high of 86°. Friday will be warm, mostly sunny, windy, and a high of 84°.

*Timing/Weather on each day can change.

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Cajon Pass
1:29 pm, Sep 28, 2026
temperature icon 74°F
scattered clouds
Humidity: 24 %
Pressure: 1008 mb
Wind: 10 mph
Wind Gust: 19 mph
Clouds: 31%
Visibility: 10 km
Sunrise: 6:41 am
Sunset: 6:38 pm
  • Temperature
  • Precipitation
  • Rain Chance
  • Wind
  • Humidity
  • Pressure
2:00 pm
temperature icon
72°/74°°F 0 mm 0% 4 mph 24% 1007 mb 0 mm/h
5:00 pm
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70°/73°°F 0.18 mm 18% 6 mph 25% 1007 mb 0 mm/h
8:00 pm
temperature icon
62°/66°°F 0 mm 0% 12 mph 24% 1007 mb 0 mm/h
11:00 pm
temperature icon
58°/58°°F 0 mm 0% 11 mph 29% 1009 mb 0 mm/h
2:00 am
temperature icon
56°/56°°F 0 mm 0% 11 mph 32% 1009 mb 0 mm/h
5:00 am
temperature icon
54°/54°°F 0 mm 0% 9 mph 34% 1008 mb 0 mm/h
8:00 am
temperature icon
59°/59°°F 0 mm 0% 9 mph 31% 1009 mb 0 mm/h
11:00 am
temperature icon
73°/73°°F 0 mm 0% 13 mph 21% 1008 mb 0 mm/h