April 21, 2026 5:54 AM

A Cooling Trend Starts Mid Week

SOUTHERN CALIFORNIA, CA. (Pain In The Pass) >> This week’s weather forecast for Monday January 19 through Friday January 23 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 80°. Tuesday will be warm, mostly sunny, with a high of 78°. Wednesday will be warm, partly sunny, and a high of 76°. Thursday will be warm, partly cloudy, and a high of 74°. Friday will be cool, partly cloudy, and a high of 70°.

High Deserts Area Average Weather/Temps:

Monday will be cool, sunny, windy, and a high of 68+°. Tuesday will be cool, mostly sunny, windy, and a high of 67+°. Wednesday will be cool, mostly sunny, windy and a high of 67+°. Thursday will be cool, partly sunny, windy, and a high of 66+°. Friday will be cool, partly sunny, windy, and a high 65+°. Higher temps in the Barstow area.

Mountains Area Average Weather/Temps:

Monday will be cold, sunny, windy, and a high of 57°. Tuesday will be cold, mostly sunny, windy, and a high of 56°. Wednesday will be cold, mostly sunny, windy, and a high of 56°. Thursday will be cold, parlty cloudy, windy, and a high of 55°. Friday will be cold, partly cloudy, windy, and a high of 52°.

*Timing of the Weather on each day can change.

There are more ways to follow the Pain In The Pass. Join the Traffic Group on Facebook with over 170,000 members. Join the group on MeWe. Like us on the on Facebook. Follow us on Instagram, and also follow us on Threads, and X aka Twitter.

loader-image
Cajon Pass
5:54 am, Apr 21, 2026
temperature icon 43°F
clear sky
Humidity: 56 %
Pressure: 1015 mb
Wind: 9 mph
Wind Gust: 10 mph
Clouds: 3%
Visibility: 10 km
Sunrise: 6:10 am
Sunset: 7:25 pm
  • Temperature
  • Precipitation
  • Rain Chance
  • Wind
  • Humidity
  • Pressure
8:00 am
temperature icon
45°/49°°F 0 mm 0% 11 mph 54% 1016 mb 0 mm/h
11:00 am
temperature icon
54°/60°°F 0 mm 0% 17 mph 39% 1015 mb 0 mm/h
2:00 pm
temperature icon
61°/61°°F 0 mm 0% 22 mph 41% 1014 mb 0 mm/h
5:00 pm
temperature icon
55°/55°°F 0 mm 0% 20 mph 60% 1014 mb 0 mm/h
8:00 pm
temperature icon
49°/49°°F 0.26 mm 26% 15 mph 68% 1015 mb 0 mm/h
11:00 pm
temperature icon
38°/38°°F 0 mm 0% 11 mph 73% 1017 mb 0 mm/h
2:00 am
temperature icon
45°/45°°F 0 mm 0% 11 mph 79% 1017 mb 0 mm/h
5:00 am
temperature icon
43°/43°°F 0 mm 0% 7 mph 82% 1018 mb 0 mm/h