August 19, 2026 12:05 AM

First Week of December 5 Day Forecast

SOUTHERN CALIFORNIA, CA. (Pain In The Pass) >> This week’s weather forecast for Monday December 1 through Friday December 5 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 cool, sunny with gusty winds, and a high of 72°. Tuesday will be cool, sunny with gusty winds, with a high of 68°. Wednesday will be cool, partly sunny with a chance of rain showers, and a high of 64°. Thursday will be cool, partly cloudy with a chance of rain showers, and a high of 68°. Friday will be cool, mostly sunny with gusty winds, and a high of 65°.

High Deserts Area Average Weather/Temps:

Monday will be cool, sunny, windy, and a high of 61+°. Tuesday will be cool, sunny, windy, and a high of 63+°. Wednesday will be cold, partly sunny with a small chance of rain showers, windy and a high of 56+°. Thursday will be cold, partly sunny with a chance of rain showers, windy, and a high of 57+°. Friday will be cool, mosty sunny, windy, and a high 60+°. Higher temps in the Barstow area.

Mountains Area Average Weather/Temps:

Monday will be cold, sunny, windy, and a high of 49°. Tuesday will be cold, sunny, windy, and a high of 50°. Wednesday will be cold, partly cloudy with a chance of rain/snow showers, windy and a high of 42°. Thursday will be cold, partly cloudy with a chance of rain/snow showers, windy, and a high of 40°. Friday will be cold, mostly sunny, windy, and a high of 46°.

*Timing of the Weather on each day can change.

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Cajon Pass
12:05 am, Aug 19, 2026
temperature icon 75°F
overcast clouds
Humidity: 23 %
Pressure: 1014 mb
Wind: 5 mph
Wind Gust: 4 mph
Clouds: 100%
Visibility: 10 km
Sunrise: 6:12 am
Sunset: 7:34 pm
  • Temperature
  • Precipitation
  • Rain Chance
  • Wind
  • Humidity
  • Pressure
2:00 am
temperature icon
66°/72°°F 0 mm 0% 2 mph 29% 1014 mb 0 mm/h
5:00 am
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63°/67°°F 0 mm 0% 2 mph 31% 1014 mb 0 mm/h
8:00 am
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74°/74°°F 0 mm 0% 2 mph 22% 1014 mb 0 mm/h
11:00 am
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87°/87°°F 0 mm 0% 5 mph 14% 1013 mb 0 mm/h
2:00 pm
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94°/94°°F 0 mm 0% 14 mph 11% 1011 mb 0 mm/h
5:00 pm
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90°/90°°F 0 mm 0% 15 mph 13% 1010 mb 0 mm/h
8:00 pm
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78°/78°°F 0 mm 0% 9 mph 28% 1012 mb 0 mm/h
11:00 pm
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71°/71°°F 0 mm 0% 4 mph 37% 1014 mb 0 mm/h