July 16, 2026 12:28 AM

The Heat is Back in this Weeks 5 Day Forecast

SOUTHERN CALIFORNIA, CA. (Pain In The Pass) >> This week’s weather forecast for Monday August 18 through Friday August 22 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 93°. Tuesday will be hot, sunny, with a high of 93°. Wednesday will be hot, sunny, and a high of 97°. Thursday will be HOT, mostly sunny with a small chance of thunderstorms, and a high of 101°. Friday will be HOT, mostly sunny with a small chance of thunderstorms, and a high of 101°.

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 98+°. Wednesday will be hot, mostly sunny with a small chance of thunderstorms, windy and a high of 104+°. Thursday will be hot, mostly sunny with a chance of thunderstorms, windy, and a high of 107+°. Friday will be hot, mostly sunny with a chance of thunderstorms, windy, and a high 107+°. Higher temps in the Barstow area.

Mountains Area Average Weather/Temps:

Monday will be warm, sunny, windy, and a high of 80°. Tuesday will be warm, sunny, windy, and a high of 81°. Wednesday will be warm, mostly sunny with a small chance of thunderstorms, windy and a high of 84°. Thursday will be warm, mostly sunny with a chance of thunderstorms, windy, and a high of 86°. Friday will be warm, mostly sunny with a chance of thunderstorms, windy, and a high of 86°.

*Timing of the Weather on each day can change.

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Cajon Pass
12:28 am, Jul 16, 2026
temperature icon 76°F
broken clouds
Humidity: 38 %
Pressure: 1011 mb
Wind: 6 mph
Wind Gust: 3 mph
Clouds: 53%
Visibility: 10 km
Sunrise: 5:48 am
Sunset: 8:01 pm
  • Temperature
  • Precipitation
  • Rain Chance
  • Wind
  • Humidity
  • Pressure
2:00 am
temperature icon
67°/73°°F 0 mm 0% 2 mph 40% 1010 mb 0 mm/h
5:00 am
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66°/69°°F 0 mm 0% 2 mph 37% 1010 mb 0 mm/h
8:00 am
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75°/75°°F 0 mm 0% 3 mph 24% 1011 mb 0 mm/h
11:00 am
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85°/85°°F 0 mm 0% 7 mph 19% 1009 mb 0 mm/h
2:00 pm
temperature icon
88°/88°°F 0 mm 0% 18 mph 18% 1008 mb 0 mm/h
5:00 pm
temperature icon
87°/87°°F 0 mm 0% 16 mph 20% 1007 mb 0 mm/h
8:00 pm
temperature icon
73°/73°°F 0 mm 0% 12 mph 33% 1008 mb 0 mm/h
11:00 pm
temperature icon
66°/66°°F 0 mm 0% 6 mph 46% 1011 mb 0 mm/h