April 27, 2026 9:49 PM

More Sunny Days in December this weeks 5 Day Forecast

SOUTHERN CALIFORNIA, CA. (Pain In The Pass) >> This week’s weather forecast for Monday December 15 through Friday December 19 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 warm, sunny, with a high of 83°. Wednesday will be warm, mostly sunny, and a high of 79°. Thursday will be warm, sunny with morning fog, and a high of 81°. Friday will be warm, mostly sunny with morning fog, and a high of 79°.

High Deserts Area Average Weather/Temps:

Monday will be cool, sunny, windy, and a high of 69+°. Tuesday will be cool, sunny, windy, and a high of 70+°. 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, mosty sunny, windy, and a high 69+°. Higher temps in the Barstow area.

Mountains Area Average Weather/Temps:

Monday will be cold, sunny, windy, and a high of 61°. Tuesday will be cold, sunny, windy, and a high of 65°. Wednesday will be cold, sunny, windy and a high of 61°. Thursday will be cold, mostly sunny, windy, and a high of 62°. Friday will be cold, mostly sunny, windy, and a high of 62°.

*Timing of the Weather on each day can change.

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Cajon Pass
9:49 pm, Apr 27, 2026
temperature icon 46°F
clear sky
Humidity: 68 %
Pressure: 1017 mb
Wind: 9 mph
Wind Gust: 6 mph
Clouds: 5%
Visibility: 10 km
Sunrise: 6:03 am
Sunset: 7:30 pm
  • Temperature
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11:00 pm
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44°/46°°F 0 mm 0% 7 mph 68% 1017 mb 0 mm/h
2:00 am
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43°/45°°F 0 mm 0% 5 mph 73% 1017 mb 0 mm/h
5:00 am
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42°/43°°F 0 mm 0% 2 mph 77% 1017 mb 0 mm/h
8:00 am
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49°/49°°F 0 mm 0% 2 mph 56% 1018 mb 0 mm/h
11:00 am
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59°/59°°F 0 mm 0% 2 mph 31% 1017 mb 0 mm/h
2:00 pm
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65°/65°°F 0 mm 0% 6 mph 23% 1015 mb 0 mm/h
5:00 pm
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64°/64°°F 0 mm 0% 11 mph 26% 1014 mb 0 mm/h
8:00 pm
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56°/56°°F 0 mm 0% 7 mph 47% 1015 mb 0 mm/h