October 30, 2026 3:13 AM

More Nice Weather in this Week 5 Day Forecast

SOUTHERN CALIFORNIA, CA. (Pain In The Pass) >> This week’s weather forecast for Monday May 18 through Friday May 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 warm, sunny, and a high of 82°. Tuesday will be hot, sunny, with a high of 86°. Wednesday will be hot, sunny, and a high of 88°. Thursday will be warm, sunny, and a high of 87°. Friday will be warm, mostly sunny, and a high of 85°.

High Deserts Area Average Weather/Temps:

Monday will be warm, sunny, windy, and a high of 78+°. Tuesday will be hot, sunny, windy, and a high of 86+°. Wednesday will be hot, sunny, windy and a high of 89+°. Thursday will be hot, sunny, windy, and a high of 91+°. 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 cold, sunny, windy, and a high of 58°. Tuesday will be cool, sunny, windy, and a high of 65°. Wednesday will be cool, sunny, windy, and a high of 70°. Thursday will be cool, mostly sunny, windy and a high of 72°. Friday will be cool, mostly sunny, windy, and a high of 72°.

*Timing of the Weather on each day can change.

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Cajon Pass
3:13 am, Oct 30, 2026
temperature icon 54°F
overcast clouds
Humidity: 85 %
Pressure: 1011 mb
Wind: 5 mph
Wind Gust: 11 mph
Clouds: 100%
Visibility: 2.924 km
Sunrise: 7:07 am
Sunset: 5:58 pm
  • Temperature
  • Precipitation
  • Rain Chance
  • Wind
  • Humidity
  • Pressure
5:00 am
temperature icon
52°/53°°F 0 mm 0% 1 mph 86% 1012 mb 0 mm/h
8:00 am
temperature icon
52°/53°°F 0 mm 0% 1 mph 87% 1012 mb 0 mm/h
11:00 am
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55°/55°°F 0.07 mm 7% 5 mph 61% 1012 mb 0 mm/h
2:00 pm
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57°/57°°F 0.02 mm 2% 11 mph 56% 1011 mb 0 mm/h
5:00 pm
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56°/56°°F 0 mm 0% 14 mph 60% 1011 mb 0 mm/h
8:00 pm
temperature icon
52°/52°°F 0 mm 0% 11 mph 79% 1013 mb 0 mm/h
11:00 pm
temperature icon
50°/50°°F 0 mm 0% 10 mph 81% 1014 mb 0 mm/h
2:00 am
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48°/48°°F 0 mm 0% 7 mph 84% 1013 mb 0 mm/h